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< title > SimStr benchmarks results< / title >
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< / head > < body > < div class = "header" > < h2 > simstr benchmarks results< / h2 >
< div style = "font-size:16pt;margin:20px;text-align:center" > < a href = "https://github.com/orefkov/simstr" > simstr< / a > is a powerful and convenient library for productive work with strings in C++.< / div >
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< span > All times in ns.< / span >
< span > < a href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp" > Source for benchmarks< / a > < / span >
< div > Group tests by platforms in charts: < input type = "checkbox" id = "gbp" checked onchange = "switchGrouping()" / > < / div > < div class = "test_platforms" > < h3 > Test configurations:< / h3 > < ul >
< li > < span class = "platform" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / span > < span class = "tooltip" > 32 X 2494.22 MHz CPU s< span class = "tooltiptext" > CPU Caches:
L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)
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Load Average: 0.37, 0.74, 0.51
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***WARNING*** ASLR is enabled, the results may have unreproducible noise in them.< / span > < / span > Include in charts: < input type = "checkbox" id = "pl0" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / span > < span class = "tooltip" > 32 X 2494.22 MHz CPU s< span class = "tooltiptext" > CPU Caches:
L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)
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Load Average: 0.05, 0.01, 0.00
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***WARNING*** ASLR is enabled, the results may have unreproducible noise in them.< / span > < / span > Include in charts: < input type = "checkbox" id = "pl1" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, Windows 10, Clang-19< / span > < span class = "tooltip" > 32 X 2494 MHz CPU s< span class = "tooltiptext" > CPU Caches:
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L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)< / span > < / span > Include in charts: < input type = "checkbox" id = "pl2" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, Windows 10, MSVC-19< / span > < span class = "tooltip" > 32 X 2494 MHz CPU s< span class = "tooltiptext" > CPU Caches:
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L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)< / span > < / span > Include in charts: < input type = "checkbox" id = "pl3" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / span > < span class = "tooltip" > 32 X 2513.96 MHz CPU s< span class = "tooltiptext" > Chrome/143.0.0.0 webasm< / span > < / span > Include in charts: < input type = "checkbox" id = "pl4" checked onchange = "buildCharts()" / > < / li >
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< / ul > < / div > < / div >
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< script > const platform _names = [ 'Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21' , 'Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13' , 'Xeon E5-2682 v4, Windows 10, Clang-19' , 'Xeon E5-2682 v4, Windows 10, MSVC-19' , 'Xeon E5-2682 v4, WASM Chrome 143, Clang-21' ] ; < / script >
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< div class = "benchset" id = "bs1" > < h4 > < a id = "bs70109915512075798510" href = "#bs70109915512075798510" > #< / a > Concatenate string + Number + " Literal" < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L54" > Concat std::string and number by std to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToStd(benchmark::State& state) {
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std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = s1 + std::to_string(i) + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 216< / td > < td class = "benchmarkresult" > 197< / td > < td class = "benchmarkresult" > 259< / td > < td class = "benchmarkresult" > 326< / td > < td class = "benchmarkresult" > 950< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L65" > Concat std::string and number by StrExpr to std::string< / a > < span class = "tooltiptext code" > void ConcatSimToStd(benchmark::State& state) {
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std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = +s1 + i + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 99.5< / td > < td class = "benchmarkresult" > 101< / td > < td class = "benchmarkresult" > 157< / td > < td class = "benchmarkresult" > 208< / td > < td class = "benchmarkresult" > 486< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L76" > Concat stringa and number by StrExpr to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSim(benchmark::State& state) {
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stra s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
stringa str = s1 + i + " end" ;
benchmark::DoNotOptimize(str);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringa в отличии от std::string,
вмещает в SSO 23 символа вместо 15, поэтому
в конце теста std::string приходится аллоцировать память,
а
Unlike std::string, stringa
holds 23 characters in SSO instead of 15, so
at the end of the std::string test, memory has to be allocated,
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while in stringa , the entire test is included in SSO.< / span > < / span > < / td > < td class = "benchmarkresult" > 62.5< / td > < td class = "benchmarkresult" > 68.9< / td > < td class = "benchmarkresult" > 66.5< / td > < td class = "benchmarkresult" > 106< / td > < td class = "benchmarkresult" > 216< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L87" > Concat stringa and number by e_concat to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimConcat(benchmark::State& state) {
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stra s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
stringa str = e_concat(" " , s1, i, " end" );
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 67.1< / td > < td class = "benchmarkresult" > 74.0< / td > < td class = "benchmarkresult" > 75.8< / td > < td class = "benchmarkresult" > 118< / td > < td class = "benchmarkresult" > 202< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + N u m b e r + " L i t e r a l " ' ] = { i d : ' b s 1 ' , t e s t s : [
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{name:'Concat std::string and number by std to std::string',data:[216,197,259,326,950]},
{name:'Concat std::string and number by StrExpr to std::string',data:[99.5,101,157,208,486]},
{name:'Concat stringa and number by StrExpr to simstr::stringa',data:[62.5,68.9,66.5,106,216]},
{name:'Concat stringa and number by e_concat to simstr::stringa',data:[67.1,74.0,75.8,118,202]}
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]}< / script >
< div class = "benchset" id = "bs2" > < h4 > < a id = "bs146911715078927772520" href = "#bs146911715078927772520" > #< / a > Concatenate string + Hex Number + " Literal" < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L104" > Concat std::string and format hex number and literal to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToFmtHex(benchmark::State& state) {
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// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
// It is not worked for char8_t, char16_t, char32_t :(
std::string str = s1 + std::format(" {:#x}" , i) + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 637< / td > < td class = "benchmarkresult" > 628< / td > < td class = "benchmarkresult" > 692< / td > < td class = "benchmarkresult" > 1008< / td > < td class = "benchmarkresult" > 2042< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L117" > std::format std::string and hex number by literal to std::string< / a > < span class = "tooltiptext code" > void ConcatAllFmtToHex(benchmark::State& state) {
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// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
// It is not worked for char8_t, char16_t, char32_t :(
std::string str = std::format(" {}{:#x} end" , s1, i);
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 824< / td > < td class = "benchmarkresult" > 889< / td > < td class = "benchmarkresult" > 2290< / td > < td class = "benchmarkresult" > 1794< / td > < td class = "benchmarkresult" > 2683< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L129" > Concat std::string and std::to_chars and string to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToCharsHex(benchmark::State& state) {
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// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
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// it worked only for char :(
char buf[40];
size_t len = std::to_chars(buf, buf + std::size(buf), i, 16).ptr - buf;
std::string str = s1 + " 0x" + std::string(buf, len) + " end" ;
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benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 196< / td > < td class = "benchmarkresult" > 180< / td > < td class = "benchmarkresult" > 188< / td > < td class = "benchmarkresult" > 244< / td > < td class = "benchmarkresult" > 623< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L144" > Concat std::string and hex number and literal by StrExpr to std::string< / a > < span class = "tooltiptext code" > void ConcatSimToStdHex(benchmark::State& state) {
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// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
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// Can work for all types of symbols
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std::string str = +s1 + i / 1_f16 + " end" ;
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benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 130< / td > < td class = "benchmarkresult" > 120< / td > < td class = "benchmarkresult" > 77.9< / td > < td class = "benchmarkresult" > 113< / td > < td class = "benchmarkresult" > 461< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L157" > Concat stringa and hex number and literal by StrExpr to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHex(benchmark::State& state) {
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// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
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// Can work for all types of symbols
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stringa str = s1 + i / 1_f16 + " end" ;
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benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 114< / td > < td class = "benchmarkresult" > 119< / td > < td class = "benchmarkresult" > 69.8< / td > < td class = "benchmarkresult" > 98.4< / td > < td class = "benchmarkresult" > 186< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L170" > Concat stringa and hex number and literal by e_concat to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHexC(benchmark::State& state) {
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// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
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// Can work for all types of symbols
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stringa str = e_concat(" " , s1, i / 1_f16, " end" );
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benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 121< / td > < td class = "benchmarkresult" > 124< / td > < td class = "benchmarkresult" > 92.6< / td > < td class = "benchmarkresult" > 99.4< / td > < td class = "benchmarkresult" > 209< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L183" > Subst stringa and hex number by e_subst literal to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHexS(benchmark::State& state) {
2026-01-29 20:48:41 +00:00
// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
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stringa str = e_subst(" {}{} end" , s1, i / 1_f16);
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benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 183< / td > < td class = "benchmarkresult" > 172< / td > < td class = "benchmarkresult" > 153< / td > < td class = "benchmarkresult" > 178< / td > < td class = "benchmarkresult" > 366< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L195" > Subst stringa and hex number by e_vsubst stra to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHexVS(benchmark::State& state) {
2026-01-31 14:24:12 +00:00
// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
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stringa str = e_vsubst(" {}{} end" _ss, s1, i / 1_f16);
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benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 297< / td > < td class = "benchmarkresult" > 317< / td > < td class = "benchmarkresult" > 274< / td > < td class = "benchmarkresult" > 352< / td > < td class = "benchmarkresult" > 911< / td > < / tr >
2026-01-21 11:59:17 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + H e x N u m b e r + " L i t e r a l " ' ] = { i d : ' b s 2 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'Concat std::string and format hex number and literal to std::string',data:[637,628,692,1008,2042]},
{name:'std::format std::string and hex number by literal to std::string',data:[824,889,2290,1794,2683]},
{name:'Concat std::string and std::to_chars and string to std::string',data:[196,180,188,244,623]},
{name:'Concat std::string and hex number and literal by StrExpr to std::string',data:[130,120,77.9,113,461]},
{name:'Concat stringa and hex number and literal by StrExpr to simstr::stringa',data:[114,119,69.8,98.4,186]},
{name:'Concat stringa and hex number and literal by e_concat to simstr::stringa',data:[121,124,92.6,99.4,209]},
{name:'Subst stringa and hex number by e_subst literal to simstr::stringa',data:[183,172,153,178,366]},
{name:'Subst stringa and hex number by e_vsubst stra to simstr::stringa',data:[297,317,274,352,911]}
2026-01-21 11:59:17 +00:00
]}< / script >
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< div class = "benchset" id = "bs3" > < h4 > < a id = "bs32341904136562619220" href = "#bs32341904136562619220" > #< / a > format/vformat and subst/vsubst octal number to 32 symbols result< / h4 >
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L217" > " abcdefghihklmopqr " _ss + i / 0x8a010_fmt + " end" < / a > < span class = "tooltiptext code" > void ConcatSimToSimOct(benchmark::State& state) {
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for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
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stringa str = " abcdefghihklmopqr " _ss + i / 0x8a010_fmt + " end" ;
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benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 264< / td > < td class = "benchmarkresult" > 249< / td > < td class = "benchmarkresult" > 639< / td > < td class = "benchmarkresult" > 667< / td > < td class = "benchmarkresult" > 438< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L226" > e_subst(" abcdefghihklmopqr {} end" , i / 0x8a010_fmt)< / a > < span class = "tooltiptext code" > void SubstSimToSimOct(benchmark::State& state) {
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for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
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stringa str = e_subst(" abcdefghihklmopqr {} end" , i / 0x8a010_fmt);
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benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 342< / td > < td class = "benchmarkresult" > 323< / td > < td class = "benchmarkresult" > 743< / td > < td class = "benchmarkresult" > 764< / td > < td class = "benchmarkresult" > 567< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L235" > e_vsubst(pattern, i / 0x8a010_fmt)< / a > < span class = "tooltiptext code" > void VSubstSimToSimOct(benchmark::State& state) {
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ssa pattern = " abcdefghihklmopqr {} end" ;
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for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
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stringa str = e_vsubst(pattern, i / 0x8a010_fmt);
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 614< / td > < td class = "benchmarkresult" > 577< / td > < td class = "benchmarkresult" > 1071< / td > < td class = "benchmarkresult" > 1073< / td > < td class = "benchmarkresult" > 1418< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L275" > fmt::format(FMT_COMPILE(" abcdefghihklmopqr {:#010o} end" ), i)< / a > < span class = "tooltiptext code" > void FmtFormatComp(benchmark::State& state) {
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for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
2026-02-08 11:17:03 +00:00
std::string str = fmt::format(FMT_COMPILE(" abcdefghihklmopqr {:#010o} end" ), i);
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benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 680< / td > < td class = "benchmarkresult" > 703< / td > < td class = "benchmarkresult" > 1380< / td > < td class = "benchmarkresult" > 1539< / td > < td class = "benchmarkresult" > 2080< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L284" > fmt::format(" abcdefghihklmopqr {:#010o} end" , i)< / a > < span class = "tooltiptext code" > void FmtFormat(benchmark::State& state) {
2026-02-08 11:17:03 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = fmt::format(" abcdefghihklmopqr {:#010o} end" , i);
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 793< / td > < td class = "benchmarkresult" > 788< / td > < td class = "benchmarkresult" > 1278< / td > < td class = "benchmarkresult" > 1393< / td > < td class = "benchmarkresult" > 2889< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L245" > std::format(" abcdefghihklmopqr {:#010o} end" , i)< / a > < span class = "tooltiptext code" > void FormatStdToStdOct(benchmark::State& state) {
2026-02-08 11:17:03 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = std::format(" abcdefghihklmopqr {:#010o} end" , i);
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 974< / td > < td class = "benchmarkresult" > 1198< / td > < td class = "benchmarkresult" > 1519< / td > < td class = "benchmarkresult" > 1908< / td > < td class = "benchmarkresult" > 2983< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L254" > std::vformat(pattern, std::make_format_args(i))< / a > < span class = "tooltiptext code" > void VFormatStdToStdOct(benchmark::State& state) {
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std::string_view pattern = " abcdefghihklmopqr {:#010o} end" ;
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for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = std::vformat(pattern, std::make_format_args(i));
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 933< / td > < td class = "benchmarkresult" > 1065< / td > < td class = "benchmarkresult" > 1511< / td > < td class = "benchmarkresult" > 1886< / td > < td class = "benchmarkresult" > 3007< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L264" > strm < < " abcdefghihklmopqr 0" < < std::oct < < std::setw(9) < < std::setfill(' 0' ) < < i < < " end" < / a > < span class = "tooltiptext code" > void StreamStdToStdOct(benchmark::State& state) {
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for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::stringstream strm;
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strm < < " abcdefghihklmopqr 0" < < std::oct < < std::setw(9) < < std::setfill(' 0' ) < < i < < " end" ;
2026-02-04 14:25:40 +00:00
std::string str = strm.str();
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2845< / td > < td class = "benchmarkresult" > 2059< / td > < td class = "benchmarkresult" > 6385< / td > < td class = "benchmarkresult" > 7102< / td > < td class = "benchmarkresult" > 8384< / td > < / tr >
2026-02-08 11:17:03 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' f o r m a t / v f o r m a t a n d s u b s t / v s u b s t o c t a l n u m b e r t o 3 2 s y m b o l s r e s u l t ' ] = { i d : ' b s 3 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'"abcdefghihklmopqr "_ss + i / 0x8a010_fmt + " end"',data:[264,249,639,667,438]},
{name:'e_subst("abcdefghihklmopqr {} end", i / 0x8a010_fmt)',data:[342,323,743,764,567]},
{name:'e_vsubst(pattern, i / 0x8a010_fmt)',data:[614,577,1071,1073,1418]},
{name:'fmt::format(FMT_COMPILE("abcdefghihklmopqr {:#010o} end"), i)',data:[680,703,1380,1539,2080]},
{name:'fmt::format("abcdefghihklmopqr {:#010o} end", i)',data:[793,788,1278,1393,2889]},
{name:'std::format("abcdefghihklmopqr {:#010o} end", i)',data:[974,1198,1519,1908,2983]},
{name:'std::vformat(pattern, std::make_format_args(i))',data:[933,1065,1511,1886,3007]},
{name:'strm < < "abcdefghihklmopqr 0" < < std::oct < < std::setw ( 9 ) < < std::setfill ( \ ' 0 \ ' ) < < i < < " end " ' , data: [ 2845 , 2059 , 6385 , 7102 , 8384 ] }
2026-02-03 07:38:21 +00:00
]}< / script >
< div class = "benchset" id = "bs4" > < h4 > < a id = "bs59672599204338055190" href = "#bs59672599204338055190" > #< / a > Concatenate string + " Literal" < / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L304" > Concat std::string by std to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToStdS(benchmark::State& state) {
2026-01-21 11:59:17 +00:00
std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = s1 + " end" ;
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 43.5< / td > < td class = "benchmarkresult" > 48.0< / td > < td class = "benchmarkresult" > 38.4< / td > < td class = "benchmarkresult" > 57.5< / td > < td class = "benchmarkresult" > 113< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L315" > Concat std::string by StrExpr to std::string< / a > < span class = "tooltiptext code" > void ConcatSimToStdS(benchmark::State& state) {
2026-01-21 11:59:17 +00:00
std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = +s1 + " end" ;
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 32.3< / td > < td class = "benchmarkresult" > 29.4< / td > < td class = "benchmarkresult" > 37.6< / td > < td class = "benchmarkresult" > 78.6< / td > < td class = "benchmarkresult" > 131< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L326" > Concat stringa by StrExpr to stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimS(benchmark::State& state) {
2026-01-21 11:59:17 +00:00
stra s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
stringa str = s1 + " end" ;
benchmark::DoNotOptimize(str);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 28.5< / td > < td class = "benchmarkresult" > 26.1< / td > < td class = "benchmarkresult" > 27.7< / td > < td class = "benchmarkresult" > 52.2< / td > < td class = "benchmarkresult" > 115< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + " L i t e r a l " ' ] = { i d : ' b s 4 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'Concat std::string by std to std::string',data:[43.5,48.0,38.4,57.5,113]},
{name:'Concat std::string by StrExpr to std::string',data:[32.3,29.4,37.6,78.6,131]},
{name:'Concat stringa by StrExpr to stringa',data:[28.5,26.1,27.7,52.2,115]}
2026-01-21 11:59:17 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs5" > < h4 > < a id = "bs68116594352702954700" href = "#bs68116594352702954700" > #< / a > Find three concatenated string in string_view< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L342" > Find concat three std::string< / a > < span class = "tooltiptext code" > size_t find_pos_str(std::string_view src, std::string_view name) {
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// before C++26 we can not concatenate string and string_view...
return src.find(" \n- " s + std::string{name} + " -\n" );
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 109< / td > < td class = "benchmarkresult" > 122< / td > < td class = "benchmarkresult" > 197< / td > < td class = "benchmarkresult" > 221< / td > < td class = "benchmarkresult" > 229< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L347" > Find concat three strexpr< / a > < span class = "tooltiptext code" > size_t find_pos_exp(ssa src, ssa name) {
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return src.find(std::string{" \n- " + name + " -\n" });
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 47.4< / td > < td class = "benchmarkresult" > 40.2< / td > < td class = "benchmarkresult" > 114< / td > < td class = "benchmarkresult" > 125< / td > < td class = "benchmarkresult" > 110< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L351" > Find concat three simstr< / a > < span class = "tooltiptext code" > size_t find_pos_sim(ssa src, ssa name) {
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return src.find(lstringa< 200>{" \n- " + name + " -\n" });
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Если результат конкатенации меньше 207 символов,
он собирается в буфере на стеке, без аллокации и деалокации.
If the concatenation result is less than 207 characters,
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it is collected in a stack-based buffer, without allocation or deallocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 22.6< / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 27.5< / td > < td class = "benchmarkresult" > 27.7< / td > < td class = "benchmarkresult" > 63.3< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' F i n d t h r e e c o n c a t e n a t e d s t r i n g i n s t r i n g _ v i e w ' ] = { i d : ' b s 5 ' , t e s t s : [
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{name:'Find concat three std::string',data:[109,122,197,221,229]},
{name:'Find concat three strexpr',data:[47.4,40.2,114,125,110]},
{name:'Find concat three simstr',data:[22.6,19.2,27.5,27.7,63.3]}
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]}< / script >
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< div class = "benchset" id = "bs6" > < h4 > < a id = "bs145290966789248325200" href = "#bs145290966789248325200" > #< / a > Build Type Name< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L411" > BuildTypeNameStr 0/0< / a > < span class = "tooltiptext code" > std::string buildTypeNameStr(std::string_view type_name, size_t prec, size_t scale) {
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std::string res{type_name};
if (prec) {
res += " (" + std::to_string(prec);
if (scale) {
res += " ," + std::to_string(scale);
}
res += " )" ;
}
return res;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.89< / td > < td class = "benchmarkresult" > 9.86< / td > < td class = "benchmarkresult" > 7.71< / td > < td class = "benchmarkresult" > 17.5< / td > < td class = "benchmarkresult" > 22.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L423" > BuildTypeNameExp 0/0< / a > < span class = "tooltiptext code" > std::string buildTypeNameExp(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.12< / td > < td class = "benchmarkresult" > 6.52< / td > < td class = "benchmarkresult" > 7.28< / td > < td class = "benchmarkresult" > 12.6< / td > < td class = "benchmarkresult" > 26.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L430" > BuildTypeNameSim 0/0< / a > < span class = "tooltiptext code" > stringa buildTypeNameSim(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.71< / td > < td class = "benchmarkresult" > 4.76< / td > < td class = "benchmarkresult" > 7.40< / td > < td class = "benchmarkresult" > 15.5< / td > < td class = "benchmarkresult" > 20.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L411" > BuildTypeNameStr 10/10< / a > < span class = "tooltiptext code" > std::string buildTypeNameStr(std::string_view type_name, size_t prec, size_t scale) {
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std::string res{type_name};
if (prec) {
res += " (" + std::to_string(prec);
if (scale) {
res += " ," + std::to_string(scale);
}
res += " )" ;
}
return res;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 51.7< / td > < td class = "benchmarkresult" > 79.6< / td > < td class = "benchmarkresult" > 57.1< / td > < td class = "benchmarkresult" > 81.5< / td > < td class = "benchmarkresult" > 395< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L423" > BuildTypeNameExp 10/10< / a > < span class = "tooltiptext code" > std::string buildTypeNameExp(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 34.4< / td > < td class = "benchmarkresult" > 23.7< / td > < td class = "benchmarkresult" > 31.5< / td > < td class = "benchmarkresult" > 38.1< / td > < td class = "benchmarkresult" > 118< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L430" > BuildTypeNameSim 10/10< / a > < span class = "tooltiptext code" > stringa buildTypeNameSim(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 22.2< / td > < td class = "benchmarkresult" > 21.0< / td > < td class = "benchmarkresult" > 24.3< / td > < td class = "benchmarkresult" > 36.3< / td > < td class = "benchmarkresult" > 72.0< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' B u i l d T y p e N a m e ' ] = { i d : ' b s 6 ' , t e s t s : [
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{name:'BuildTypeNameStr 0/0',data:[6.89,9.86,7.71,17.5,22.3]},
{name:'BuildTypeNameExp 0/0',data:[7.12,6.52,7.28,12.6,26.3]},
{name:'BuildTypeNameSim 0/0',data:[4.71,4.76,7.40,15.5,20.3]},
{name:'BuildTypeNameStr 10/10',data:[51.7,79.6,57.1,81.5,395]},
{name:'BuildTypeNameExp 10/10',data:[34.4,23.7,31.5,38.1,118]},
{name:'BuildTypeNameSim 10/10',data:[22.2,21.0,24.3,36.3,72.0]}
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]}< / script >
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< div class = "benchset" id = "bs7" > < h4 > < a id = "bs54035654251116789780" href = "#bs54035654251116789780" > #< / a > Replace string by copy< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L484" > Concat with replace str< / a > < span class = "tooltiptext code" > std::string make_str_str(std::string_view from, std::string_view pattern, std::string_view repl) {
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auto str_replace = [](std::string_view from, std::string_view pattern, std::string_view repl) {
std::string result;
for (size_t offset = 0; ;) {
size_t pos = from.find(pattern, offset);
if (pos == std::string::npos) {
result += from.substr(offset);
break;
}
result += from.substr(offset, pos - offset);
result += repl;
offset = pos + pattern.length();
}
return result;
};
return " < " + str_replace(from, pattern, repl) + " >" ;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 195< / td > < td class = "benchmarkresult" > 225< / td > < td class = "benchmarkresult" > 300< / td > < td class = "benchmarkresult" > 340< / td > < td class = "benchmarkresult" > 509< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L502" > Concat with replace exp< / a > < span class = "tooltiptext code" > std::string make_str_exp(std::string_view from, std::string_view pattern, std::string_view repl) {
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return " < " + e_repl(from, pattern, repl) + " >" ;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В
есть "из коробки".
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simstr has a string expression for replacing substrings out of the box.< / span > < / span > < / td > < td class = "benchmarkresult" > 135< / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 208< / td > < td class = "benchmarkresult" > 216< / td > < td class = "benchmarkresult" > 253< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e s t r i n g b y c o p y ' ] = { i d : ' b s 7 ' , t e s t s : [
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{name:'Concat with replace str',data:[195,225,300,340,509]},
{name:'Concat with replace exp',data:[135,133,208,216,253]}
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]}< / script >
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< div class = "benchset" id = "bs8" > < h4 > < a id = "bs77666948964429305550" href = "#bs77666948964429305550" > #< / a > Create Empty Str< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L536" > std::string e;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Пустые строки, ничего необычного.
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Empty lines, nothing unusual.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 2.83< / td > < td class = "benchmarkresult" > 2.14< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L536" > std::string_view e;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.361< / td > < td class = "benchmarkresult" > 0.731< / td > < td class = "benchmarkresult" > 0.352< / td > < td class = "benchmarkresult" > 1.77< / td > < td class = "benchmarkresult" > 0.741< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L536" > ssa e;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.355< / td > < td class = "benchmarkresult" > 0.180< / td > < td class = "benchmarkresult" > 0.346< / td > < td class = "benchmarkresult" > 1.42< / td > < td class = "benchmarkresult" > 0.361< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L536" > stringa e;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.720< / td > < td class = "benchmarkresult" > 0.732< / td > < td class = "benchmarkresult" > 0.723< / td > < td class = "benchmarkresult" > 2.18< / td > < td class = "benchmarkresult" > 2.15< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L536" > lstringa< 20> e;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 1.07< / td > < td class = "benchmarkresult" > 2.47< / td > < td class = "benchmarkresult" > 2.21< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L536" > lstringa< 40> e;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 1.12< / td > < td class = "benchmarkresult" > 1.07< / td > < td class = "benchmarkresult" > 2.43< / td > < td class = "benchmarkresult" > 2.24< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e E m p t y S t r ' ] = { i d : ' b s 8 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::string e;',data:[1.08,1.08,1.08,2.83,2.14]},
{name:'std::string_view e;',data:[0.361,0.731,0.352,1.77,0.741]},
{name:'ssa e;',data:[0.355,0.180,0.346,1.42,0.361]},
{name:'stringa e;',data:[0.720,0.732,0.723,2.18,2.15]},
{name:'lstringa< 20 > e;',data:[1.09,1.09,1.07,2.47,2.21]},
{name:'lstringa< 40 > e;',data:[1.08,1.12,1.07,2.43,2.24]}
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]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs9" > < h4 > < a id = "bs181001525395597238060" href = "#bs181001525395597238060" > #< / a > Create Str from short literal (9 symbols)< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L551" > std::string e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Короткий литерал помещается во внутренний буфер std::string,
2026-01-21 11:59:17 +00:00
время тратится только на копирование 10 байтов.
The short literal is placed in the internal std::string buffer;
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time is spent only copying 10 bytes.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.85< / td > < td class = "benchmarkresult" > 1.85< / td > < td class = "benchmarkresult" > 1.77< / td > < td class = "benchmarkresult" > 2.48< / td > < td class = "benchmarkresult" > 2.42< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L551" > std::string_view e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > И string_view, и ssa - по сути одно и то же:
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указатель на текст и е г о
Both string_view and ssa are essentially the same thing:
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a pointer to text and its length.< / span > < / span > < / td > < td class = "benchmarkresult" > 0.719< / td > < td class = "benchmarkresult" > 0.732< / td > < td class = "benchmarkresult" > 0.719< / td > < td class = "benchmarkresult" > 1.77< / td > < td class = "benchmarkresult" > 1.09< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L551" > ssa e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.362< / td > < td class = "benchmarkresult" > 0.722< / td > < td class = "benchmarkresult" > 0.357< / td > < td class = "benchmarkresult" > 1.76< / td > < td class = "benchmarkresult" > 0.732< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L551" > stringa e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringa при инициализации константным литералом так же
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сохраняет только указатель на текст и е г о
When initialized with a constant literal, stringa also stores
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only a pointer to the text and its length.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 1.12< / td > < td class = "benchmarkresult" > 1.07< / td > < td class = "benchmarkresult" > 2.75< / td > < td class = "benchmarkresult" > 2.18< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L551" > lstringa< 20> e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Внутреннего буфера хватает для размещения символов,
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время уходит только на копирование байтов.
The internal buffer is sufficient to accommodate characters;
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time is spent only on copying bytes.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 1.80< / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 2.51< / td > < td class = "benchmarkresult" > 2.62< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L551" > lstringa< 40> e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1.79< / td > < td class = "benchmarkresult" > 1.86< / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 2.47< / td > < td class = "benchmarkresult" > 2.58< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e S t r f r o m s h o r t l i t e r a l ( 9 s y m b o l s ) ' ] = { i d : ' b s 9 ' , t e s t s : [
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{name:'std::string e = "Test text";',data:[1.85,1.85,1.77,2.48,2.42]},
{name:'std::string_view e = "Test text";',data:[0.719,0.732,0.719,1.77,1.09]},
{name:'ssa e = "Test text";',data:[0.362,0.722,0.357,1.76,0.732]},
{name:'stringa e = "Test text";',data:[1.08,1.12,1.07,2.75,2.18]},
{name:'lstringa< 20 > e = "Test text";',data:[1.81,1.80,1.81,2.51,2.62]},
{name:'lstringa< 40 > e = "Test text";',data:[1.79,1.86,1.81,2.47,2.58]}
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]}< / script >
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< div class = "benchset" id = "bs10" > < h4 > < a id = "bs132333183298742730280" href = "#bs132333183298742730280" > #< / a > Create Str from long literal (30 symbols)< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L566" > std::string e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вот тут уже литерал не помещается во внутренний буфер,
возникает аллокация и копирование 30-и байтов.
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Н о а
Here, the literal doesn't fit into the internal buffer,
and 30 bytes are allocated and copied.
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But how much slower is allocation under Windows than under Linux, 20 ns vs. 70 ns...< / span > < / span > < / td > < td class = "benchmarkresult" > 19.0< / td > < td class = "benchmarkresult" > 19.7< / td > < td class = "benchmarkresult" > 72.2< / td > < td class = "benchmarkresult" > 74.8< / td > < td class = "benchmarkresult" > 23.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L566" > std::string_view e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > string_view и ssa по прежнему ничего не делают, кроме
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запоминания указателя на текст и е г о
string_view and ssa still do nothing except
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remember the pointer to the text and its size.< / span > < / span > < / td > < td class = "benchmarkresult" > 0.731< / td > < td class = "benchmarkresult" > 0.727< / td > < td class = "benchmarkresult" > 0.715< / td > < td class = "benchmarkresult" > 1.77< / td > < td class = "benchmarkresult" > 1.12< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L566" > ssa e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.364< / td > < td class = "benchmarkresult" > 0.718< / td > < td class = "benchmarkresult" > 0.357< / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 0.720< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L566" > stringa e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringa на константных литералах не отстает!
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stringa doesn't lag behind on constant literals!< / span > < / span > < / td > < td class = "benchmarkresult" > 1.07< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.06< / td > < td class = "benchmarkresult" > 2.47< / td > < td class = "benchmarkresult" > 2.15< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L566" > lstringa< 20> e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > lstringa< 20 > может вместить в себя до 23 символов,
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Очевидно, что для 30-и символов уже нужна аллокация.
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Obviously, 30 characters already require allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 23.2< / td > < td class = "benchmarkresult" > 20.4< / td > < td class = "benchmarkresult" > 69.8< / td > < td class = "benchmarkresult" > 74.3< / td > < td class = "benchmarkresult" > 24.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L566" > lstringa< 40> e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А < 40 > влезает до 47 символов, так что просто
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копируется 30 байтов.
And lstringa< 40 > can hold up to 47 characters, so 30
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bytes are simply copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 2.56< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 2.50< / td > < td class = "benchmarkresult" > 3.17< / td > < td class = "benchmarkresult" > 2.90< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e S t r f r o m l o n g l i t e r a l ( 3 0 s y m b o l s ) ' ] = { i d : ' b s 1 0 ' , t e s t s : [
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{name:'std::string e = "123456789012345678901234567890";',data:[19.0,19.7,72.2,74.8,23.6]},
{name:'std::string_view e = "123456789012345678901234567890";',data:[0.731,0.727,0.715,1.77,1.12]},
{name:'ssa e = "123456789012345678901234567890";',data:[0.364,0.718,0.357,1.81,0.720]},
{name:'stringa e = "123456789012345678901234567890";',data:[1.07,1.11,1.06,2.47,2.15]},
{name:'lstringa< 20 > e = "123456789012345678901234567890";',data:[23.2,20.4,69.8,74.3,24.6]},
{name:'lstringa< 40 > e = "123456789012345678901234567890";',data:[2.56,1.82,2.50,3.17,2.90]}
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]}< / script >
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< div class = "benchset" id = "bs11" > < h4 > < a id = "bs6234433963744178700" href = "#bs6234433963744178700" > #< / a > Create copy of Str with 9 symbols< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L581" > std::string e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Строка в пределах SSO, так что просто копирует байты.
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The string is within the SSO, so it just copies the bytes.< / span > < / span > < / td > < td class = "benchmarkresult" > 4.73< / td > < td class = "benchmarkresult" > 5.55< / td > < td class = "benchmarkresult" > 1.76< / td > < td class = "benchmarkresult" > 5.84< / td > < td class = "benchmarkresult" > 3.63< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L581" > std::string_view e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.363< / td > < td class = "benchmarkresult" > 0.367< / td > < td class = "benchmarkresult" > 0.357< / td > < td class = "benchmarkresult" > 3.38< / td > < td class = "benchmarkresult" > 1.08< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L581" > ssa e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > ssa и string_view не владеют строкой, копируется
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только информация о
ssa and string_view don't own the string; only the
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string information is copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 0.358< / td > < td class = "benchmarkresult" > 0.374< / td > < td class = "benchmarkresult" > 0.354< / td > < td class = "benchmarkresult" > 3.54< / td > < td class = "benchmarkresult" > 1.10< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L581" > stringa e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Копирование stringa происходит быстро,
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особенно если она инициализирована литералом.
Copying a stringa is fast,
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especially if it is initialized with a literal.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 1.27< / td > < td class = "benchmarkresult" > 1.24< / td > < td class = "benchmarkresult" > 3.85< / td > < td class = "benchmarkresult" > 2.49< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L581" > lstringa< 20> e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В
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In both cases, the internal buffer is sufficient.< / span > < / span > < / td > < td class = "benchmarkresult" > 4.15< / td > < td class = "benchmarkresult" > 1.46< / td > < td class = "benchmarkresult" > 1.75< / td > < td class = "benchmarkresult" > 4.29< / td > < td class = "benchmarkresult" > 5.22< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L581" > lstringa< 40> e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Только копируются байты.
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Only bytes are copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 3.98< / td > < td class = "benchmarkresult" > 1.47< / td > < td class = "benchmarkresult" > 1.78< / td > < td class = "benchmarkresult" > 4.27< / td > < td class = "benchmarkresult" > 5.43< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e c o p y o f S t r w i t h 9 s y m b o l s ' ] = { i d : ' b s 1 1 ' , t e s t s : [
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{name:'std::string e = "Test text"; auto c{e};',data:[4.73,5.55,1.76,5.84,3.63]},
{name:'std::string_view e = "Test text"; auto c{e};',data:[0.363,0.367,0.357,3.38,1.08]},
{name:'ssa e = "Test text"; auto c{e};',data:[0.358,0.374,0.354,3.54,1.10]},
{name:'stringa e = "Test text"; auto c{e};',data:[1.08,1.27,1.24,3.85,2.49]},
{name:'lstringa< 20 > e = "Test text"; auto c{e};',data:[4.15,1.46,1.75,4.29,5.22]},
{name:'lstringa< 40 > e = "Test text"; auto c{e};',data:[3.98,1.47,1.78,4.27,5.43]}
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]}< / script >
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< div class = "benchset" id = "bs12" > < h4 > < a id = "bs76384575499199461500" href = "#bs76384575499199461500" > #< / a > Create copy of Str with 30 symbols< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L598" > std::string e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Копирования длинной строки вызывает аллокацию,
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SSO уже не хватает. И снова как же отстаёт аллокация под Windows...
Copying a long string causes allocations,
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SSO is no longer sufficient. And again, how allocation lags under Windows...< / span > < / span > < / td > < td class = "benchmarkresult" > 19.0< / td > < td class = "benchmarkresult" > 23.1< / td > < td class = "benchmarkresult" > 69.0< / td > < td class = "benchmarkresult" > 74.8< / td > < td class = "benchmarkresult" > 48.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L598" > std::string_view e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.751< / td > < td class = "benchmarkresult" > 0.730< / td > < td class = "benchmarkresult" > 0.720< / td > < td class = "benchmarkresult" > 1.75< / td > < td class = "benchmarkresult" > 1.11< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L598" > ssa e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.361< / td > < td class = "benchmarkresult" > 0.730< / td > < td class = "benchmarkresult" > 0.360< / td > < td class = "benchmarkresult" > 1.75< / td > < td class = "benchmarkresult" > 0.745< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L598" > stringa e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А у е г о
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сравни с
But with stringa, literal copying doesn't depend on its length,
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compare with the previous benchmark.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.07< / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 1.79< / td > < td class = "benchmarkresult" > 2.86< / td > < td class = "benchmarkresult" > 2.17< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L598" > lstringa< 20> e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Н е
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Doesn't fit, allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 21.3< / td > < td class = "benchmarkresult" > 19.5< / td > < td class = "benchmarkresult" > 71.2< / td > < td class = "benchmarkresult" > 76.6< / td > < td class = "benchmarkresult" > 23.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L598" > lstringa< 40> e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Уложили во внутренний буфер.
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Placed in the internal buffer.< / span > < / span > < / td > < td class = "benchmarkresult" > 4.68< / td > < td class = "benchmarkresult" > 5.61< / td > < td class = "benchmarkresult" > 4.72< / td > < td class = "benchmarkresult" > 7.55< / td > < td class = "benchmarkresult" > 14.7< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e c o p y o f S t r w i t h 3 0 s y m b o l s ' ] = { i d : ' b s 1 2 ' , t e s t s : [
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{name:'std::string e = "123456789012345678901234567890"; auto c{e};',data:[19.0,23.1,69.0,74.8,48.4]},
{name:'std::string_view e = "123456789012345678901234567890"; auto c{e};',data:[0.751,0.730,0.720,1.75,1.11]},
{name:'ssa e = "123456789012345678901234567890"; auto c{e};',data:[0.361,0.730,0.360,1.75,0.745]},
{name:'stringa e = "123456789012345678901234567890"; auto c{e};',data:[1.07,1.08,1.79,2.86,2.17]},
{name:'lstringa< 20 > e = "123456789012345678901234567890"; auto c{e};',data:[21.3,19.5,71.2,76.6,23.4]},
{name:'lstringa< 40 > e = "123456789012345678901234567890"; auto c{e};',data:[4.68,5.61,4.72,7.55,14.7]}
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]}< / script >
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< div class = "benchset" id = "bs13" > < h4 > < a id = "bs21623892135774528620" href = "#bs21623892135774528620" > #< / a > Find 9 symbols text in end of 99 symbols text< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L615" > std::string::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Здесь "победила дружба", у
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Однако, Windows и Linux явно в разных весовых категориях.
Here, "friendship wins," with all types scoring roughly equally.
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However, Windows and Linux are clearly in different weight classes.< / span > < / span > < / td > < td class = "benchmarkresult" > 6.59< / td > < td class = "benchmarkresult" > 6.56< / td > < td class = "benchmarkresult" > 37.9< / td > < td class = "benchmarkresult" > 40.5< / td > < td class = "benchmarkresult" > 44.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L615" > std::string_view::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.31< / td > < td class = "benchmarkresult" > 6.70< / td > < td class = "benchmarkresult" > 37.9< / td > < td class = "benchmarkresult" > 39.6< / td > < td class = "benchmarkresult" > 46.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L615" > ssa::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.63< / td > < td class = "benchmarkresult" > 6.24< / td > < td class = "benchmarkresult" > 17.0< / td > < td class = "benchmarkresult" > 20.0< / td > < td class = "benchmarkresult" > 43.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L615" > stringa::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.91< / td > < td class = "benchmarkresult" > 6.57< / td > < td class = "benchmarkresult" > 18.4< / td > < td class = "benchmarkresult" > 30.3< / td > < td class = "benchmarkresult" > 43.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L615" > lstringa< 20>::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.16< / td > < td class = "benchmarkresult" > 6.29< / td > < td class = "benchmarkresult" > 17.8< / td > < td class = "benchmarkresult" > 20.3< / td > < td class = "benchmarkresult" > 39.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L615" > lstringa< 40>::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.37< / td > < td class = "benchmarkresult" > 6.24< / td > < td class = "benchmarkresult" > 17.4< / td > < td class = "benchmarkresult" > 21.5< / td > < td class = "benchmarkresult" > 40.3< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' F i n d 9 s y m b o l s t e x t i n e n d o f 9 9 s y m b o l s t e x t ' ] = { i d : ' b s 1 3 ' , t e s t s : [
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{name:'std::string::find;',data:[6.59,6.56,37.9,40.5,44.7]},
{name:'std::string_view::find;',data:[7.31,6.70,37.9,39.6,46.0]},
{name:'ssa::find;',data:[6.63,6.24,17.0,20.0,43.7]},
{name:'stringa::find;',data:[6.91,6.57,18.4,30.3,43.8]},
{name:'lstringa< 20 > ::find;',data:[6.16,6.29,17.8,20.3,39.3]},
{name:'lstringa< 40 > ::find;',data:[6.37,6.24,17.4,21.5,40.3]}
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]}< / script >
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< div class = "benchset" id = "bs14" > < h4 > < a id = "bs170792414351801782640" href = "#bs170792414351801782640" > #< / a > Copy not literal Str with N symbols< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.55< / td > < td class = "benchmarkresult" > 5.56< / td > < td class = "benchmarkresult" > 1.77< / td > < td class = "benchmarkresult" > 4.31< / td > < td class = "benchmarkresult" > 48.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Явно виден скачок, где заканчивается SSO и начинается аллокация.
Обратите внимание, что WASM - 32-битный, и там размер
2026-01-21 11:59:17 +00:00
SSO у
The jump where SSO ends and allocation begins is clearly visible.
Note that WASM is 32-bit, and the size of the SSO for std::string is
2026-02-10 20:35:02 +00:00
smaller, as far as I remember: 11 characters + 0.< / span > < / span > < / td > < td class = "benchmarkresult" > 23.6< / td > < td class = "benchmarkresult" > 23.7< / td > < td class = "benchmarkresult" > 74.3< / td > < td class = "benchmarkresult" > 80.8< / td > < td class = "benchmarkresult" > 49.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Дальше просто добавляется время на копирование байтов.
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Then the time for copying bytes is simply added.< / span > < / span > < / td > < td class = "benchmarkresult" > 23.9< / td > < td class = "benchmarkresult" > 23.3< / td > < td class = "benchmarkresult" > 74.7< / td > < td class = "benchmarkresult" > 81.4< / td > < td class = "benchmarkresult" > 51.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.6< / td > < td class = "benchmarkresult" > 23.5< / td > < td class = "benchmarkresult" > 74.3< / td > < td class = "benchmarkresult" > 79.9< / td > < td class = "benchmarkresult" > 48.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.3< / td > < td class = "benchmarkresult" > 23.0< / td > < td class = "benchmarkresult" > 82.3< / td > < td class = "benchmarkresult" > 82.3< / td > < td class = "benchmarkresult" > 53.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.3< / td > < td class = "benchmarkresult" > 23.6< / td > < td class = "benchmarkresult" > 79.0< / td > < td class = "benchmarkresult" > 81.7< / td > < td class = "benchmarkresult" > 55.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 24.8< / td > < td class = "benchmarkresult" > 24.7< / td > < td class = "benchmarkresult" > 82.4< / td > < td class = "benchmarkresult" > 87.0< / td > < td class = "benchmarkresult" > 52.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.1< / td > < td class = "benchmarkresult" > 25.0< / td > < td class = "benchmarkresult" > 82.6< / td > < td class = "benchmarkresult" > 89.6< / td > < td class = "benchmarkresult" > 60.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 29.4< / td > < td class = "benchmarkresult" > 30.2< / td > < td class = "benchmarkresult" > 83.4< / td > < td class = "benchmarkresult" > 88.6< / td > < td class = "benchmarkresult" > 56.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 51.6< / td > < td class = "benchmarkresult" > 48.2< / td > < td class = "benchmarkresult" > 89.9< / td > < td class = "benchmarkresult" > 95.4< / td > < td class = "benchmarkresult" > 70.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 124< / td > < td class = "benchmarkresult" > 126< / td > < td class = "benchmarkresult" > 121< / td > < td class = "benchmarkresult" > 127< / td > < td class = "benchmarkresult" > 93.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > std::string copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Чем длиннее строка, тем дольше создаётся копия.
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The longer the string, the longer it takes to create a copy.< / span > < / span > < / td > < td class = "benchmarkresult" > 163< / td > < td class = "benchmarkresult" > 155< / td > < td class = "benchmarkresult" > 198< / td > < td class = "benchmarkresult" > 203< / td > < td class = "benchmarkresult" > 137< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Здесь stringa инициализируется не литералом,
2026-01-21 11:59:17 +00:00
а
Here, stringa is not initialized with a literal,
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meaning it must store characters itself.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.20< / td > < td class = "benchmarkresult" > 1.47< / td > < td class = "benchmarkresult" > 1.56< / td > < td class = "benchmarkresult" > 4.65< / td > < td class = "benchmarkresult" > 2.39< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Под WASM SSO у
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собиралось без поддержки потоков, поэтому атомарный
инкремент заменён на обычный, судя по времени.
Under WASM, stringa has a 15-character SSO. Furthermore,
it was built without thread support, so the atomic
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increment was replaced with a regular one, judging by the time.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.24< / td > < td class = "benchmarkresult" > 1.42< / td > < td class = "benchmarkresult" > 1.54< / td > < td class = "benchmarkresult" > 4.71< / td > < td class = "benchmarkresult" > 4.85< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > SSO в stringa до 23 символов, и даже 23
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копируются быстрее, чем 15 в std::string.
SSO in stringa is up to 23 characters, and even 23
2026-02-10 20:35:02 +00:00
copies faster than 15 in std::string.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.42< / td > < td class = "benchmarkresult" > 1.52< / td > < td class = "benchmarkresult" > 4.88< / td > < td class = "benchmarkresult" > 4.85< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Всё, не влезаем в SSO, а
2026-01-21 11:59:17 +00:00
Добавляется время на атомарный инкремент счётчика.
That's it, we're not using SSO, so we're using a shared buffer.
2026-02-10 20:35:02 +00:00
Time is added for the atomic counter increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 16.5< / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 4.87< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 16.6< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 19.5< / td > < td class = "benchmarkresult" > 4.97< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 16.6< / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 19.1< / td > < td class = "benchmarkresult" > 4.82< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 16.5< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 4.83< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.4< / td > < td class = "benchmarkresult" > 16.6< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 4.82< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 19.0< / td > < td class = "benchmarkresult" > 4.81< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.7< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 19.5< / td > < td class = "benchmarkresult" > 4.82< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.5< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 19.0< / td > < td class = "benchmarkresult" > 4.79< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > stringa copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > И как видно, кроме инкремента нет накладных расходов,
2026-01-21 11:59:17 +00:00
время копирования не зависит от длины строки.
And as you can see, there are no overhead costs other than the
2026-02-10 20:35:02 +00:00
increment; copying time does not depend on the string length.< / span > < / span > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.5< / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 4.75< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > lstringa< 16 > использует SSO до 23 символов.
2026-01-21 11:59:17 +00:00
А
lstringa< 16 > uses SSO up to 23 characters.
2026-02-10 20:35:02 +00:00
WASM has a 32-bit architecture, so SSO is up to 19 characters.< / span > < / span > < / td > < td class = "benchmarkresult" > 4.56< / td > < td class = "benchmarkresult" > 1.58< / td > < td class = "benchmarkresult" > 1.93< / td > < td class = "benchmarkresult" > 5.28< / td > < td class = "benchmarkresult" > 4.70< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.51< / td > < td class = "benchmarkresult" > 6.31< / td > < td class = "benchmarkresult" > 6.22< / td > < td class = "benchmarkresult" > 9.18< / td > < td class = "benchmarkresult" > 14.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.68< / td > < td class = "benchmarkresult" > 6.37< / td > < td class = "benchmarkresult" > 6.41< / td > < td class = "benchmarkresult" > 9.32< / td > < td class = "benchmarkresult" > 38.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > И после начинает вести себя при копировании, как std::string.
2026-02-10 20:35:02 +00:00
And then it starts to behave like std::string when copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 27.1< / td > < td class = "benchmarkresult" > 26.6< / td > < td class = "benchmarkresult" > 83.6< / td > < td class = "benchmarkresult" > 91.6< / td > < td class = "benchmarkresult" > 37.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 26.4< / td > < td class = "benchmarkresult" > 26.9< / td > < td class = "benchmarkresult" > 93.3< / td > < td class = "benchmarkresult" > 87.3< / td > < td class = "benchmarkresult" > 42.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 28.6< / td > < td class = "benchmarkresult" > 27.9< / td > < td class = "benchmarkresult" > 91.7< / td > < td class = "benchmarkresult" > 91.8< / td > < td class = "benchmarkresult" > 39.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 28.2< / td > < td class = "benchmarkresult" > 29.1< / td > < td class = "benchmarkresult" > 92.1< / td > < td class = "benchmarkresult" > 91.5< / td > < td class = "benchmarkresult" > 42.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 31.0< / td > < td class = "benchmarkresult" > 31.4< / td > < td class = "benchmarkresult" > 90.9< / td > < td class = "benchmarkresult" > 104< / td > < td class = "benchmarkresult" > 48.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 34.7< / td > < td class = "benchmarkresult" > 33.8< / td > < td class = "benchmarkresult" > 96.1< / td > < td class = "benchmarkresult" > 94.0< / td > < td class = "benchmarkresult" > 48.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 118< / td > < td class = "benchmarkresult" > 124< / td > < td class = "benchmarkresult" > 108< / td > < td class = "benchmarkresult" > 105< / td > < td class = "benchmarkresult" > 59.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 134< / td > < td class = "benchmarkresult" > 135< / td > < td class = "benchmarkresult" > 158< / td > < td class = "benchmarkresult" > 142< / td > < td class = "benchmarkresult" > 82.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 16> copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 153< / td > < td class = "benchmarkresult" > 149< / td > < td class = "benchmarkresult" > 232< / td > < td class = "benchmarkresult" > 203< / td > < td class = "benchmarkresult" > 124< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.44< / td > < td class = "benchmarkresult" > 1.57< / td > < td class = "benchmarkresult" > 2.09< / td > < td class = "benchmarkresult" > 5.45< / td > < td class = "benchmarkresult" > 4.94< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.88< / td > < td class = "benchmarkresult" > 6.26< / td > < td class = "benchmarkresult" > 5.41< / td > < td class = "benchmarkresult" > 9.18< / td > < td class = "benchmarkresult" > 16.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.82< / td > < td class = "benchmarkresult" > 6.14< / td > < td class = "benchmarkresult" > 5.77< / td > < td class = "benchmarkresult" > 9.15< / td > < td class = "benchmarkresult" > 16.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.72< / td > < td class = "benchmarkresult" > 6.76< / td > < td class = "benchmarkresult" > 5.46< / td > < td class = "benchmarkresult" > 9.08< / td > < td class = "benchmarkresult" > 16.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.33< / td > < td class = "benchmarkresult" > 6.53< / td > < td class = "benchmarkresult" > 8.47< / td > < td class = "benchmarkresult" > 12.1< / td > < td class = "benchmarkresult" > 19.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.80< / td > < td class = "benchmarkresult" > 8.18< / td > < td class = "benchmarkresult" > 8.47< / td > < td class = "benchmarkresult" > 12.6< / td > < td class = "benchmarkresult" > 17.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 27.5< / td > < td class = "benchmarkresult" > 7.95< / td > < td class = "benchmarkresult" > 8.99< / td > < td class = "benchmarkresult" > 12.6< / td > < td class = "benchmarkresult" > 19.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 22.3< / td > < td class = "benchmarkresult" > 9.18< / td > < td class = "benchmarkresult" > 10.5< / td > < td class = "benchmarkresult" > 15.1< / td > < td class = "benchmarkresult" > 19.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Даже 512 символов копируются быстрее, чем
2026-01-21 11:59:17 +00:00
одна аллокация или атомарный инкремент.
Even 512 characters are copied faster than a single
2026-02-10 20:35:02 +00:00
allocation or atomic increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 21.3< / td > < td class = "benchmarkresult" > 12.8< / td > < td class = "benchmarkresult" > 12.0< / td > < td class = "benchmarkresult" > 16.8< / td > < td class = "benchmarkresult" > 22.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А у
2026-02-10 20:35:02 +00:00
And then it's like everyone else.< / span > < / span > < / td > < td class = "benchmarkresult" > 110< / td > < td class = "benchmarkresult" > 125< / td > < td class = "benchmarkresult" > 108< / td > < td class = "benchmarkresult" > 116< / td > < td class = "benchmarkresult" > 57.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 113< / td > < td class = "benchmarkresult" > 135< / td > < td class = "benchmarkresult" > 153< / td > < td class = "benchmarkresult" > 166< / td > < td class = "benchmarkresult" > 79.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L638" > lstringa< 512> copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 122< / td > < td class = "benchmarkresult" > 152< / td > < td class = "benchmarkresult" > 214< / td > < td class = "benchmarkresult" > 224< / td > < td class = "benchmarkresult" > 122< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o p y n o t l i t e r a l S t r w i t h N s y m b o l s ' ] = { i d : ' b s 1 4 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::string copy{str_with_len_N};/15',data:[5.55,5.56,1.77,4.31,48.6]},
{name:'std::string copy{str_with_len_N};/16',data:[23.6,23.7,74.3,80.8,49.7]},
{name:'std::string copy{str_with_len_N};/23',data:[23.9,23.3,74.7,81.4,51.3]},
{name:'std::string copy{str_with_len_N};/24',data:[23.6,23.5,74.3,79.9,48.4]},
{name:'std::string copy{str_with_len_N};/32',data:[23.3,23.0,82.3,82.3,53.5]},
{name:'std::string copy{str_with_len_N};/64',data:[23.3,23.6,79.0,81.7,55.0]},
{name:'std::string copy{str_with_len_N};/128',data:[24.8,24.7,82.4,87.0,52.0]},
{name:'std::string copy{str_with_len_N};/256',data:[25.1,25.0,82.6,89.6,60.1]},
{name:'std::string copy{str_with_len_N};/512',data:[29.4,30.2,83.4,88.6,56.8]},
{name:'std::string copy{str_with_len_N};/1024',data:[51.6,48.2,89.9,95.4,70.0]},
{name:'std::string copy{str_with_len_N};/2048',data:[124,126,121,127,93.3]},
{name:'std::string copy{str_with_len_N};/4096',data:[163,155,198,203,137]},
{name:'stringa copy{str_with_len_N};/15',data:[1.20,1.47,1.56,4.65,2.39]},
{name:'stringa copy{str_with_len_N};/16',data:[1.24,1.42,1.54,4.71,4.85]},
{name:'stringa copy{str_with_len_N};/23',data:[1.11,1.42,1.52,4.88,4.85]},
{name:'stringa copy{str_with_len_N};/24',data:[16.1,16.5,16.2,19.2,4.87]},
{name:'stringa copy{str_with_len_N};/32',data:[16.2,16.6,16.1,19.5,4.97]},
{name:'stringa copy{str_with_len_N};/64',data:[16.1,16.6,16.2,19.1,4.82]},
{name:'stringa copy{str_with_len_N};/128',data:[16.1,16.5,16.1,19.2,4.83]},
{name:'stringa copy{str_with_len_N};/256',data:[16.4,16.6,16.1,19.2,4.82]},
{name:'stringa copy{str_with_len_N};/512',data:[16.2,16.3,16.0,19.0,4.81]},
{name:'stringa copy{str_with_len_N};/1024',data:[16.0,16.7,16.0,19.5,4.82]},
{name:'stringa copy{str_with_len_N};/2048',data:[16.3,16.5,16.0,19.0,4.79]},
{name:'stringa copy{str_with_len_N};/4096',data:[16.3,16.5,15.9,19.2,4.75]},
{name:'lstringa< 16 > copy{str_with_len_N};/15',data:[4.56,1.58,1.93,5.28,4.70]},
{name:'lstringa< 16 > copy{str_with_len_N};/16',data:[4.51,6.31,6.22,9.18,14.9]},
{name:'lstringa< 16 > copy{str_with_len_N};/23',data:[4.68,6.37,6.41,9.32,38.6]},
{name:'lstringa< 16 > copy{str_with_len_N};/24',data:[27.1,26.6,83.6,91.6,37.9]},
{name:'lstringa< 16 > copy{str_with_len_N};/32',data:[26.4,26.9,93.3,87.3,42.5]},
{name:'lstringa< 16 > copy{str_with_len_N};/64',data:[28.6,27.9,91.7,91.8,39.2]},
{name:'lstringa< 16 > copy{str_with_len_N};/128',data:[28.2,29.1,92.1,91.5,42.8]},
{name:'lstringa< 16 > copy{str_with_len_N};/256',data:[31.0,31.4,90.9,104,48.1]},
{name:'lstringa< 16 > copy{str_with_len_N};/512',data:[34.7,33.8,96.1,94.0,48.5]},
{name:'lstringa< 16 > copy{str_with_len_N};/1024',data:[118,124,108,105,59.5]},
{name:'lstringa< 16 > copy{str_with_len_N};/2048',data:[134,135,158,142,82.6]},
{name:'lstringa< 16 > copy{str_with_len_N};/4096',data:[153,149,232,203,124]},
{name:'lstringa< 512 > copy{str_with_len_N};/15',data:[5.44,1.57,2.09,5.45,4.94]},
{name:'lstringa< 512 > copy{str_with_len_N};/16',data:[4.88,6.26,5.41,9.18,16.2]},
{name:'lstringa< 512 > copy{str_with_len_N};/23',data:[4.82,6.14,5.77,9.15,16.3]},
{name:'lstringa< 512 > copy{str_with_len_N};/24',data:[4.72,6.76,5.46,9.08,16.3]},
{name:'lstringa< 512 > copy{str_with_len_N};/32',data:[4.33,6.53,8.47,12.1,19.5]},
{name:'lstringa< 512 > copy{str_with_len_N};/64',data:[5.80,8.18,8.47,12.6,17.9]},
{name:'lstringa< 512 > copy{str_with_len_N};/128',data:[27.5,7.95,8.99,12.6,19.0]},
{name:'lstringa< 512 > copy{str_with_len_N};/256',data:[22.3,9.18,10.5,15.1,19.8]},
{name:'lstringa< 512 > copy{str_with_len_N};/512',data:[21.3,12.8,12.0,16.8,22.9]},
{name:'lstringa< 512 > copy{str_with_len_N};/1024',data:[110,125,108,116,57.7]},
{name:'lstringa< 512 > copy{str_with_len_N};/2048',data:[113,135,153,166,79.9]},
{name:'lstringa< 512 > copy{str_with_len_N};/4096',data:[122,152,214,224,122]}
2025-04-05 14:21:11 +00:00
]}< / script >
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< div class = "benchset" id = "bs15" > < h4 > < a id = "bs94756718925776995960" href = "#bs94756718925776995960" > #< / a > Convert to int ' 1234567' < / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L653" > std::string s = " 123456789" ; int res = std::strtol(s.c_str(), 0, 10);< / a > < span class = "tooltiptext code" > void ToIntStr10(benchmark::State& state, const std::string& s, int c) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
int res = std::strtol(s.c_str(), nullptr, 10);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В
нет нужды в null терминированности. Ближайший аналог такого
поведения "std::from_chars", но он к сожалению очень ограничен
по возможностям. Здесь я попытался произвести тесты, близкие по
2026-01-21 11:59:17 +00:00
логике к работе std::from_chars
In simstr, a string fragment is sufficient for conversion to a number;
there's no need for null termination. The closest analog to this behavior
is "std::from_chars," but unfortunately, it is very limited in its capabilities.
2026-02-10 20:35:02 +00:00
Here, I attempted to run tests that are similar in logic to std::from_chars.< / span > < / span > < / td > < td class = "benchmarkresult" > 25.8< / td > < td class = "benchmarkresult" > 30.4< / td > < td class = "benchmarkresult" > 35.0< / td > < td class = "benchmarkresult" > 35.0< / td > < td class = "benchmarkresult" > 93.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L692" > std::string_view s = " 123456789" ; std::from_chars(s.data(), s.data() + s.size(), res, 10);< / a > < span class = "tooltiptext code" > void ToIntFromChars10(benchmark::State& state, const std::string_view& s, int c) {
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for (auto _: state) {
int res = 0;
std::from_chars(s.data(), s.data() + s.size(), res, 10);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > from_chars требует точного указания основания счисления,
2026-01-21 11:59:17 +00:00
не допускает знаков плюс, пробелов, префиксов 0x и т.п.
from_chars requires an exact radix specification and does not allow plus
2026-02-10 20:35:02 +00:00
signs, spaces, 0x prefixes, etc.< / span > < / span > < / td > < td class = "benchmarkresult" > 14.6< / td > < td class = "benchmarkresult" > 12.5< / td > < td class = "benchmarkresult" > 15.7< / td > < td class = "benchmarkresult" > 17.9< / td > < td class = "benchmarkresult" > 27.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L720" > stringa s = " 123456789" ; int res = s.to_int< int, true, 10, false>< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void ToIntSimStr10(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int, true, 10, false, false>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Здесь для to_int заданы такие же ограничения - проверять переполнение,
2026-01-21 11:59:17 +00:00
десятичная система, без лидирующих пробелов и знака плюс
Here, to_int has the same restrictions: check for overflow,
2026-02-10 20:35:02 +00:00
decimal system, no leading spaces, and no plus sign.< / span > < / span > < / td > < td class = "benchmarkresult" > 12.2< / td > < td class = "benchmarkresult" > 8.44< / td > < td class = "benchmarkresult" > 15.3< / td > < td class = "benchmarkresult" > 17.8< / td > < td class = "benchmarkresult" > 18.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L720" > ssa s = " 123456789" ; int res = s.to_int< int, true, 10, false>< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void ToIntSimStr10(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 10, false, false>().value;
2025-04-05 14:21:11 +00:00
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 11.9< / td > < td class = "benchmarkresult" > 8.12< / td > < td class = "benchmarkresult" > 14.5< / td > < td class = "benchmarkresult" > 17.8< / td > < td class = "benchmarkresult" > 18.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L720" > lstringa< 20> s = " 123456789" ; int res = s.to_int< int, true, 10, false>< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void ToIntSimStr10(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 10, false, false>().value;
2025-04-05 14:21:11 +00:00
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 12.0< / td > < td class = "benchmarkresult" > 8.81< / td > < td class = "benchmarkresult" > 15.2< / td > < td class = "benchmarkresult" > 17.0< / td > < td class = "benchmarkresult" > 19.0< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o i n t \ ' 1 2 3 4 5 6 7 \ ' ' ] = { i d : ' b s 1 5 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::string s = "123456789"; int res = std::strtol(s.c_str(), 0, 10);',data:[25.8,30.4,35.0,35.0,93.0]},
{name:'std::string_view s = "123456789"; std::from_chars(s.data(), s.data() + s.size(), res, 10);',data:[14.6,12.5,15.7,17.9,27.4]},
{name:'stringa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[12.2,8.44,15.3,17.8,18.9]},
{name:'ssa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[11.9,8.12,14.5,17.8,18.9]},
{name:'lstringa< 20 > s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[12.0,8.81,15.2,17.0,19.0]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs16" > < h4 > < a id = "bs182426078870126042750" href = "#bs182426078870126042750" > #< / a > Convert to unsigned ' abcDef' < / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L666" > std::string s = " abcDef" ; int res = std::strtol(s.c_str(), 0, 16);< / a > < span class = "tooltiptext code" > void ToIntStr16(benchmark::State& state, const std::string& s, int c) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
int res = std::strtol(s.c_str(), nullptr, 16);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Всё то же, только для 16р о
2026-02-10 20:35:02 +00:00
Everything is the same, only for the hexadecimal system< / span > < / span > < / td > < td class = "benchmarkresult" > 23.2< / td > < td class = "benchmarkresult" > 25.0< / td > < td class = "benchmarkresult" > 37.8< / td > < td class = "benchmarkresult" > 39.8< / td > < td class = "benchmarkresult" > 69.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L706" > std::string_view s = " abcDef" ; std::from_chars(s.data(), s.data() + s.size(), res, 16);< / a > < span class = "tooltiptext code" > void ToIntFromChars16(benchmark::State& state, const std::string_view& s, int c) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
int res = 0;
std::from_chars(s.data(), s.data() + s.size(), res, 16);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 9.32< / td > < td class = "benchmarkresult" > 10.6< / td > < td class = "benchmarkresult" > 8.94< / td > < td class = "benchmarkresult" > 10.8< / td > < td class = "benchmarkresult" > 25.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L735" > stringa s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 16, false, false>().value;
2025-04-05 14:21:11 +00:00
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 12.2< / td > < td class = "benchmarkresult" > 9.06< / td > < td class = "benchmarkresult" > 13.5< / td > < td class = "benchmarkresult" > 15.1< / td > < td class = "benchmarkresult" > 19.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L735" > ssa s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 16, false, false>().value;
2025-04-05 14:21:11 +00:00
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 12.6< / td > < td class = "benchmarkresult" > 8.03< / td > < td class = "benchmarkresult" > 13.1< / td > < td class = "benchmarkresult" > 14.1< / td > < td class = "benchmarkresult" > 19.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L735" > lstringa< 20> s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 16, false, false>().value;
2025-04-05 14:21:11 +00:00
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 12.2< / td > < td class = "benchmarkresult" > 8.60< / td > < td class = "benchmarkresult" > 13.0< / td > < td class = "benchmarkresult" > 15.6< / td > < td class = "benchmarkresult" > 19.7< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o u n s i g n e d \ ' a b c D e f \ ' ' ] = { i d : ' b s 1 6 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::string s = "abcDef"; int res = std::strtol(s.c_str(), 0, 16);',data:[23.2,25.0,37.8,39.8,69.8]},
{name:'std::string_view s = "abcDef"; std::from_chars(s.data(), s.data() + s.size(), res, 16);',data:[9.32,10.6,8.94,10.8,25.8]},
{name:'stringa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[12.2,9.06,13.5,15.1,19.8]},
{name:'ssa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[12.6,8.03,13.1,14.1,19.8]},
{name:'lstringa< 20 > s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[12.2,8.60,13.0,15.6,19.7]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs17" > < h4 > < a id = "bs52606100125109966680" href = "#bs52606100125109966680" > #< / a > Convert to int ' 1234567' < / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L679" > std::string s = " 123456789" ; int res = std::strtol(s.c_str(), 0, 0);< / a > < span class = "tooltiptext code" > void ToIntStr0(benchmark::State& state, const std::string& s, int c) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
int res = std::strtol(s.c_str(), nullptr, 0);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А
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And here we have parsing of an arbitrary number.< / span > < / span > < / td > < td class = "benchmarkresult" > 29.0< / td > < td class = "benchmarkresult" > 30.0< / td > < td class = "benchmarkresult" > 48.0< / td > < td class = "benchmarkresult" > 52.4< / td > < td class = "benchmarkresult" > 99.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L750" > stringa s = " 123456789" ; int res = s.to_int< int>; // Check overflow< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr0(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 18.2< / td > < td class = "benchmarkresult" > 15.4< / td > < td class = "benchmarkresult" > 19.5< / td > < td class = "benchmarkresult" > 24.7< / td > < td class = "benchmarkresult" > 24.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L765" > ssa s = " 123456789" ; int res = s.to_int< int, false>; // No check overflow< / a > < span class = "tooltiptext code" > void ToIntNoOverflow(benchmark::State& state, ssa t, int c) {
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for (auto _: state) {
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int res = t.to_int< int, false>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 14.7< / td > < td class = "benchmarkresult" > 15.1< / td > < td class = "benchmarkresult" > 17.7< / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 19.3< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o i n t \ ' 1 2 3 4 5 6 7 \ ' ' ] = { i d : ' b s 1 7 ' , t e s t s : [
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{name:'std::string s = " 123456789"; int res = std::strtol(s.c_str(), 0, 0);',data:[29.0,30.0,48.0,52.4,99.5]},
{name:'stringa s = " 123456789"; int res = s.to_int< int > ; // Check overflow',data:[18.2,15.4,19.5,24.7,24.9]},
{name:'ssa s = " 123456789"; int res = s.to_int< int , false > ; // No check overflow',data:[14.7,15.1,17.7,19.2,19.3]}
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]}< / script >
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< div class = "benchset" id = "bs18" > < h4 > < a id = "bs182348477702821075660" href = "#bs182348477702821075660" > #< / a > Convert to double ' 1234.567e10' < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L795" > std::string s = " 1234.567e10" ; double res = std::strtod(s.c_str(), nullptr);< / a > < span class = "tooltiptext code" > void ToDoubleStr(benchmark::State& state, const std::string& s, double c) {
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for (auto _: state) {
char* ptr = nullptr;
double res = std::strtod(s.c_str(), & ptr);
if (ptr == s.c_str()) {
state.SkipWithError(" not equal" );
}
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 62.0< / td > < td class = "benchmarkresult" > 72.4< / td > < td class = "benchmarkresult" > 102< / td > < td class = "benchmarkresult" > 125< / td > < td class = "benchmarkresult" > 305< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L812" > std::string_view s = " 1234.567e10" ; std::from_chars(s.data(), s.data() + s.size(), res);< / a > < span class = "tooltiptext code" > void ToDoubleFromChars(benchmark::State& state, const std::string_view& s, double c) {
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for (auto _: state) {
double res = 0;
if (std::from_chars(s.data(), s.data() + s.size(), res).ec != std::errc{}) {
state.SkipWithError(" not equal" );
}
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.6< / td > < td class = "benchmarkresult" > 26.4< / td > < td class = "benchmarkresult" > 70.7< / td > < td class = "benchmarkresult" > 100.0< / td > < td class = "benchmarkresult" > 109< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L828" > ssa s = " 1234.567e10" ; double res = *s.to_double()< / a > < span class = "tooltiptext code" > template< typename T>
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void ToDoubleSimStr(benchmark::State& state, T t, double c) {
for (auto _: state) {
auto r = t.template to_double< false>();
if (!r) {
state.SkipWithError(" not equal" );
}
double res = *r;
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 29.0< / td > < td class = "benchmarkresult" > 26.8< / td > < td class = "benchmarkresult" > 38.8< / td > < td class = "benchmarkresult" > 41.1< / td > < td class = "benchmarkresult" > 42.9< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o d o u b l e \ ' 1 2 3 4 . 5 6 7 e 1 0 \ ' ' ] = { i d : ' b s 1 8 ' , t e s t s : [
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{name:'std::string s = "1234.567e10"; double res = std::strtod(s.c_str(), nullptr);',data:[62.0,72.4,102,125,305]},
{name:'std::string_view s = "1234.567e10"; std::from_chars(s.data(), s.data() + s.size(), res);',data:[25.6,26.4,70.7,100.0,109]},
{name:'ssa s = "1234.567e10"; double res = *s.to_double()',data:[29.0,26.8,38.8,41.1,42.9]}
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]}< / script >
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< div class = "benchset" id = "bs19" > < h4 > < a id = "bs96505608161678391610" href = "#bs96505608161678391610" > #< / a > Append const literal of 16 bytes 64 times, 1024 total length< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L852" > std::stringstream str; ... str < < " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStreamConstLiteral(benchmark::State& state) {
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for (auto _: state) {
std::string result;
std::stringstream str;
for (size_t c = 0; c < 64; c++) {
str < < TEXT_16;
}
result = str.str();
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(str);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1423< / td > < td class = "benchmarkresult" > 1533< / td > < td class = "benchmarkresult" > 5083< / td > < td class = "benchmarkresult" > 6946< / td > < td class = "benchmarkresult" > 6503< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L871" > std::string str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStdStringConstLiteral(benchmark::State& state) {
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for (auto _: state) {
std::string result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 439< / td > < td class = "benchmarkresult" > 431< / td > < td class = "benchmarkresult" > 1315< / td > < td class = "benchmarkresult" > 1625< / td > < td class = "benchmarkresult" > 825< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L887" > lstringa< 8> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 424< / td > < td class = "benchmarkresult" > 479< / td > < td class = "benchmarkresult" > 867< / td > < td class = "benchmarkresult" > 1160< / td > < td class = "benchmarkresult" > 732< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L887" > lstringa< 128> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Чем больше внутренний буфер, тем меньше раз требуется
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аллокация, тем быстрее результат.
The larger the internal buffer, the fewer allocations are
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required, and the faster the result.< / span > < / span > < / td > < td class = "benchmarkresult" > 267< / td > < td class = "benchmarkresult" > 319< / td > < td class = "benchmarkresult" > 450< / td > < td class = "benchmarkresult" > 614< / td > < td class = "benchmarkresult" > 582< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L887" > lstringa< 512> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 250< / td > < td class = "benchmarkresult" > 285< / td > < td class = "benchmarkresult" > 255< / td > < td class = "benchmarkresult" > 409< / td > < td class = "benchmarkresult" > 481< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L887" > lstringa< 1024> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 139< / td > < td class = "benchmarkresult" > 146< / td > < td class = "benchmarkresult" > 146< / td > < td class = "benchmarkresult" > 265< / td > < td class = "benchmarkresult" > 416< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d c o n s t l i t e r a l o f 1 6 b y t e s 6 4 t i m e s , 1 0 2 4 t o t a l l e n g t h ' ] = { i d : ' b s 1 9 ' , t e s t s : [
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{name:'std::stringstream str; ... str < < "abbaabbaabbaabba";',data:[1423,1533,5083,6946,6503]},
{name:'std::string str; ... str += "abbaabbaabbaabba";',data:[439,431,1315,1625,825]},
{name:'lstringa< 8 > str; ... str += "abbaabbaabbaabba";',data:[424,479,867,1160,732]},
{name:'lstringa< 128 > str; ... str += "abbaabbaabbaabba";',data:[267,319,450,614,582]},
{name:'lstringa< 512 > str; ... str += "abbaabbaabbaabba";',data:[250,285,255,409,481]},
{name:'lstringa< 1024 > str; ... str += "abbaabbaabbaabba";',data:[139,146,146,265,416]}
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]}< / script >
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< div class = "benchset" id = "bs20" > < h4 > < a id = "bs36931044816721597850" href = "#bs36931044816721597850" > #< / a > Append string of 16 bytes and const literal of 16 bytes 32 times, 1024 total length< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L912" > std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStreamStrConstLiteral(benchmark::State& state) {
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std::string s1 = TEXT_16;
for (auto _: state) {
std::string result;
std::stringstream s;
for (size_t c = 0; c < 32; c++) {
s < < s1 < < TEXT_16;
}
result = s.str();
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1349< / td > < td class = "benchmarkresult" > 1500< / td > < td class = "benchmarkresult" > 5564< / td > < td class = "benchmarkresult" > 6738< / td > < td class = "benchmarkresult" > 6973< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L932" > std::string str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStdStrStrConstLiteral(benchmark::State& state) {
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std::string p1 = TEXT_16;
for (auto _: state) {
std::string result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1243< / td > < td class = "benchmarkresult" > 1394< / td > < td class = "benchmarkresult" > 4477< / td > < td class = "benchmarkresult" > 4494< / td > < td class = "benchmarkresult" > 2270< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L950" > lstringa< 8> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 461< / td > < td class = "benchmarkresult" > 499< / td > < td class = "benchmarkresult" > 769< / td > < td class = "benchmarkresult" > 971< / td > < td class = "benchmarkresult" > 1025< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L950" > lstringa< 128> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 334< / td > < td class = "benchmarkresult" > 434< / td > < td class = "benchmarkresult" > 549< / td > < td class = "benchmarkresult" > 647< / td > < td class = "benchmarkresult" > 879< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L950" > lstringa< 512> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 319< / td > < td class = "benchmarkresult" > 381< / td > < td class = "benchmarkresult" > 333< / td > < td class = "benchmarkresult" > 445< / td > < td class = "benchmarkresult" > 749< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L950" > lstringa< 1024> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 228< / td > < td class = "benchmarkresult" > 269< / td > < td class = "benchmarkresult" > 215< / td > < td class = "benchmarkresult" > 306< / td > < td class = "benchmarkresult" > 694< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d s t r i n g o f 1 6 b y t e s a n d c o n s t l i t e r a l o f 1 6 b y t e s 3 2 t i m e s , 1 0 2 4 t o t a l l e n g t h ' ] = { i d : ' b s 2 0 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; ' , data: [ 1349 , 1500 , 5564 , 6738 , 6973 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba";',data:[1243,1394,4477,4494,2270]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba";',data:[461,499,769,971,1025]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba";',data:[334,434,549,647,879]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba";',data:[319,381,333,445,749]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba";',data:[228,269,215,306,694]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs21" > < h4 > < a id = "bs8293767858383349360" href = "#bs8293767858383349360" > #< / a > Append string of 16 bytes and const literal of 16 bytes 2048 times, 65536 total length< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L978" > std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > void AppendStreamStrConstLiteralBig(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string s1 = TEXT_16;
for (auto _: state) {
std::string result;
std::stringstream s;
for (size_t c = 0; c < 2048; c++) {
s < < s1 < < TEXT_16;
}
result = s.str();
#ifdef CHECK_RESULT
if (result.size() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 74998< / td > < td class = "benchmarkresult" > 89645< / td > < td class = "benchmarkresult" > 212569< / td > < td class = "benchmarkresult" > 338927< / td > < td class = "benchmarkresult" > 344582< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L998" > std::string str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > void AppendStdStrStrConstLiteralBig(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string p1 = TEXT_16;
for (auto _: state) {
std::string result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.size() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 70443< / td > < td class = "benchmarkresult" > 91376< / td > < td class = "benchmarkresult" > 183368< / td > < td class = "benchmarkresult" > 237469< / td > < td class = "benchmarkresult" > 121536< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1016" > lstringa< 8> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 18578< / td > < td class = "benchmarkresult" > 24896< / td > < td class = "benchmarkresult" > 18492< / td > < td class = "benchmarkresult" > 30325< / td > < td class = "benchmarkresult" > 51397< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1016" > lstringa< 128> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 18590< / td > < td class = "benchmarkresult" > 21157< / td > < td class = "benchmarkresult" > 16512< / td > < td class = "benchmarkresult" > 28698< / td > < td class = "benchmarkresult" > 47195< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1016" > lstringa< 512> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 15811< / td > < td class = "benchmarkresult" > 20898< / td > < td class = "benchmarkresult" > 15660< / td > < td class = "benchmarkresult" > 27579< / td > < td class = "benchmarkresult" > 48258< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1016" > lstringa< 1024> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 15906< / td > < td class = "benchmarkresult" > 21053< / td > < td class = "benchmarkresult" > 15990< / td > < td class = "benchmarkresult" > 26870< / td > < td class = "benchmarkresult" > 47889< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d s t r i n g o f 1 6 b y t e s a n d c o n s t l i t e r a l o f 1 6 b y t e s 2 0 4 8 t i m e s , 6 5 5 3 6 t o t a l l e n g t h ' ] = { i d : ' b s 2 1 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; 2048 times ' , data: [ 74998 , 89645 , 212569 , 338927 , 344582 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[70443,91376,183368,237469,121536]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[18578,24896,18492,30325,51397]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[18590,21157,16512,28698,47195]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[15811,20898,15660,27579,48258]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[15906,21053,15990,26870,47889]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs22" > < h4 > < a id = "bs66949588770596833730" href = "#bs66949588770596833730" > #< / a > Append 2 string of 16 bytes 32 times, 1024 total length< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1043" > std::stringstream str; ... str < < str_var1 < < str_var2;< / a > < span class = "tooltiptext code" > void AppendStream2String(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string s1 = TEXT_16;
std::string s2 = TEXT_16;
for (auto _: state) {
std::string result;
std::stringstream s;
for (size_t c = 0; c < 32; c++) {
s < < s1 < < s2;
}
result = s.str();
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1367< / td > < td class = "benchmarkresult" > 1457< / td > < td class = "benchmarkresult" > 4241< / td > < td class = "benchmarkresult" > 6538< / td > < td class = "benchmarkresult" > 7153< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1065" > std::string str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > void AppendStdStr2String(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string s1 = TEXT_16;
std::string s2 = TEXT_16;
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
for (auto _: state) {
std::string result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1353< / td > < td class = "benchmarkresult" > 1597< / td > < td class = "benchmarkresult" > 3791< / td > < td class = "benchmarkresult" > 5100< / td > < td class = "benchmarkresult" > 2679< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1086" > lstringa< 16> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 523< / td > < td class = "benchmarkresult" > 581< / td > < td class = "benchmarkresult" > 750< / td > < td class = "benchmarkresult" > 1064< / td > < td class = "benchmarkresult" > 1192< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1086" > lstringa< 128> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 436< / td > < td class = "benchmarkresult" > 488< / td > < td class = "benchmarkresult" > 499< / td > < td class = "benchmarkresult" > 748< / td > < td class = "benchmarkresult" > 1072< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1086" > lstringa< 512> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 395< / td > < td class = "benchmarkresult" > 455< / td > < td class = "benchmarkresult" > 372< / td > < td class = "benchmarkresult" > 522< / td > < td class = "benchmarkresult" > 969< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1086" > lstringa< 1024> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 279< / td > < td class = "benchmarkresult" > 347< / td > < td class = "benchmarkresult" > 275< / td > < td class = "benchmarkresult" > 389< / td > < td class = "benchmarkresult" > 961< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d 2 s t r i n g o f 1 6 b y t e s 3 2 t i m e s , 1 0 2 4 t o t a l l e n g t h ' ] = { i d : ' b s 2 2 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::stringstream str; ... str < < str_var1 < < str_var2 ; ' , data: [ 1367 , 1457 , 4241 , 6538 , 7153 ] } ,
{name:'std::string str; ... str += str_var1 + str_var2;',data:[1353,1597,3791,5100,2679]},
{name:'lstringa< 16 > str; ... str += str_var1 + str_var2;',data:[523,581,750,1064,1192]},
{name:'lstringa< 128 > str; ... str += str_var1 + str_var2;',data:[436,488,499,748,1072]},
{name:'lstringa< 512 > str; ... str += str_var1 + str_var2;',data:[395,455,372,522,969]},
{name:'lstringa< 1024 > str; ... str += str_var1 + str_var2;',data:[279,347,275,389,961]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs23" > < h4 > < a id = "bs130432147582115154460" href = "#bs130432147582115154460" > #< / a > Append text, number, text< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1115" > std::stringstream str; str < < " test = " < < k < < " times" ;< / a > < span class = "tooltiptext code" > void AppendStreamStrNumStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
std::stringstream t;
t < < " test = " < < k < < " times" ;
std::string result = t.str();
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2983< / td > < td class = "benchmarkresult" > 3363< / td > < td class = "benchmarkresult" > 10371< / td > < td class = "benchmarkresult" > 14863< / td > < td class = "benchmarkresult" > 11771< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1133" > std::string str = " test = " + std::to_string(k) + " times" ;< / a > < span class = "tooltiptext code" > void AppendStdStringStrNumStr(benchmark::State& state) {
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for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
std::string result = " test = " + std::to_string(k) + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 489< / td > < td class = "benchmarkresult" > 489< / td > < td class = "benchmarkresult" > 1028< / td > < td class = "benchmarkresult" > 1420< / td > < td class = "benchmarkresult" > 1737< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1149" > char buf[100]; sprintf(buf, " test = %u times" , k); std::string str = buf;< / a > < span class = "tooltiptext code" > void AppendSprintfStrNumStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
char buf[100];
std::sprintf(buf, " test = %u times" , k);
std::string result = buf;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1352< / td > < td class = "benchmarkresult" > 1726< / td > < td class = "benchmarkresult" > 2704< / td > < td class = "benchmarkresult" > 3266< / td > < td class = "benchmarkresult" > 5495< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1167" > std::string str = std::format(" test = {} times" , k);< / a > < span class = "tooltiptext code" > void AppendFormatStrNumStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
std::string result = std::format(" test = {} times" , k);
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1116< / td > < td class = "benchmarkresult" > 1476< / td > < td class = "benchmarkresult" > 1802< / td > < td class = "benchmarkresult" > 2699< / td > < td class = "benchmarkresult" > 2890< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1183" > lstringa< 8> str; str.format(" test = {} times" , k);< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStrF(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result;
result.format(" test = {} times" , k);
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В с
In simstr format, the first time it doesn't fit into such a
2026-02-10 20:35:02 +00:00
string without allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 1300< / td > < td class = "benchmarkresult" > 1877< / td > < td class = "benchmarkresult" > 2052< / td > < td class = "benchmarkresult" > 2910< / td > < td class = "benchmarkresult" > 4860< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1183" > lstringa< 32> str; str.format(" test = {} times" , k);< / a > < span class = "tooltiptext code" > template< typename T>
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void AppendSimStrStrNumStrF(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result;
result.format(" test = {} times" , k);
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А
2026-02-10 20:35:02 +00:00
And it fits in this one. Use buffers of the appropriate size right away.< / span > < / span > < / td > < td class = "benchmarkresult" > 952< / td > < td class = "benchmarkresult" > 1239< / td > < td class = "benchmarkresult" > 1013< / td > < td class = "benchmarkresult" > 1721< / td > < td class = "benchmarkresult" > 4213< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1201" > lstringa< 8> str = " test = " + k + " times" ;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStr(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result = " test = " _ss + k + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Результат не помещается в SSO, возникает аллокация.
2026-02-10 20:35:02 +00:00
The result does not fit into SSO, an allocation occurs.< / span > < / span > < / td > < td class = "benchmarkresult" > 280< / td > < td class = "benchmarkresult" > 353< / td > < td class = "benchmarkresult" > 807< / td > < td class = "benchmarkresult" > 1075< / td > < td class = "benchmarkresult" > 584< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1201" > lstringa< 32> str = " test = " + k + " times" ;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStr(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result = " test = " _ss + k + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А
2026-01-21 11:59:17 +00:00
Ещё раз - используйте сразу буфера подходящего размера.
And here and below, the result fits within SSO.
2026-02-10 20:35:02 +00:00
Once again, use appropriately sized buffers from the start.< / span > < / span > < / td > < td class = "benchmarkresult" > 148< / td > < td class = "benchmarkresult" > 188< / td > < td class = "benchmarkresult" > 152< / td > < td class = "benchmarkresult" > 208< / td > < td class = "benchmarkresult" > 332< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1201" > stringa str = " test = " + k + " times" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void AppendSimStrStrNumStr(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result = " test = " _ss + k + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Под WASM размер SSO 15 символов, что явно не хватает для размещения
2026-01-21 11:59:17 +00:00
результата, отсюда и такое время.
Under WASM, the SSO size is 15 characters, which is clearly not
2026-02-10 20:35:02 +00:00
enough to accommodate the result, hence the long time.< / span > < / span > < / td > < td class = "benchmarkresult" > 147< / td > < td class = "benchmarkresult" > 180< / td > < td class = "benchmarkresult" > 149< / td > < td class = "benchmarkresult" > 263< / td > < td class = "benchmarkresult" > 594< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d t e x t , n u m b e r , t e x t ' ] = { i d : ' b s 2 3 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::stringstream str; str < < "test = " < < k < < " times " ; ' , data: [ 2983 , 3363 , 10371 , 14863 , 11771 ] } ,
{name:'std::string str = "test = " + std::to_string(k) + " times";',data:[489,489,1028,1420,1737]},
{name:'char buf[100]; sprintf(buf, "test = %u times", k); std::string str = buf;',data:[1352,1726,2704,3266,5495]},
{name:'std::string str = std::format("test = {} times", k);',data:[1116,1476,1802,2699,2890]},
{name:'lstringa< 8 > str; str.format("test = {} times", k);',data:[1300,1877,2052,2910,4860]},
{name:'lstringa< 32 > str; str.format("test = {} times", k);',data:[952,1239,1013,1721,4213]},
{name:'lstringa< 8 > str = "test = " + k + " times";',data:[280,353,807,1075,584]},
{name:'lstringa< 32 > str = "test = " + k + " times";',data:[148,188,152,208,332]},
{name:'stringa str = "test = " + k + " times";',data:[147,180,149,263,594]}
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]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs24" > < h4 > < a id = "bs7106975351756760120" href = "#bs7106975351756760120" > #< / a > Split text and convert to int< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1231" > std::string::find + substr + std::strtol< / a > < span class = "tooltiptext code" > void SplitConvertIntStdString(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string numbers = NUMBER_LIST;
for (auto _: state) {
int total = 0;
for (size_t start = 0; start < numbers.length(); ) {
int delim = numbers.find(" -!-" , start);
if (delim == std::string::npos) {
delim = numbers.size();
}
std::string part = numbers.substr(start, delim - start);
total += std::strtol(part.c_str(), nullptr, 0);
start = delim + 3;
}
#ifdef CHECK_RESULT
if (total != 218) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(total);
benchmark::DoNotOptimize(numbers);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 255< / td > < td class = "benchmarkresult" > 317< / td > < td class = "benchmarkresult" > 518< / td > < td class = "benchmarkresult" > 618< / td > < td class = "benchmarkresult" > 658< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1255" > ssa::splitter + ssa::as_int< / a > < span class = "tooltiptext code" > void SplitConvertIntSimStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
stra numbers = NUMBER_LIST;
for (auto _: state) {
int total = 0;
for (auto splitter = numbers.splitter(" -!-" ); !splitter.is_done();) {
total += splitter.next().as_int< int>();
}
#ifdef CHECK_RESULT
if (total != 218) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(total);
benchmark::DoNotOptimize(numbers);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 157< / td > < td class = "benchmarkresult" > 143< / td > < td class = "benchmarkresult" > 158< / td > < td class = "benchmarkresult" > 329< / td > < td class = "benchmarkresult" > 243< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1272" > ssa::splitf + functor< / a > < span class = "tooltiptext code" > void SplitConvertIntSplitf(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
stra numbers = NUMBER_LIST;
for (auto _: state) {
int total = 0;
numbers.splitf< void>(" -!-" , [& ](ssa& part){total += part.as_int< int>();});
#ifdef CHECK_RESULT
if (total != 218) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(total);
benchmark::DoNotOptimize(numbers);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 199< / td > < td class = "benchmarkresult" > 145< / td > < td class = "benchmarkresult" > 183< / td > < td class = "benchmarkresult" > 241< / td > < td class = "benchmarkresult" > 272< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' S p l i t t e x t a n d c o n v e r t t o i n t ' ] = { i d : ' b s 2 4 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'std::string::find + substr + std::strtol',data:[255,317,518,618,658]},
{name:'ssa::splitter + ssa::as_int',data:[157,143,158,329,243]},
{name:'ssa::splitf + functor',data:[199,145,183,241,272]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs25" > < h4 > < a id = "bs151373809886162287550" href = "#bs151373809886162287550" > #< / a > Replace symbols in text ~400 symbols< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1293" > Naive (and wrong) replace symbols with std::string find + replace< / a > < span class = "tooltiptext code" > void ReplaceSymbolsStdStringNaiveWrong(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' & ' , " & amp;" },
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" }
};
auto repl_all = [](std::string& str, char s, std::string_view repl) {
size_t start_pos = 0;
while((start_pos = str.find(s, start_pos)) != std::string::npos) {
str.replace(start_pos, 1, repl);
start_pos += repl.length();
}
};
for (auto _: state) {
std::string result{source};
for (const auto& r : repl) {
repl_all(result, r.first, r.second);
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Это наивная реализация, которая неверно отработает на
таких заменах, как 'a'->'b' и 'b'->'a'. Н о
2026-01-21 11:59:17 +00:00
то работает быстро.
This is a naive implementation that will fail to handle substitutions
such as 'a'->'b' and 'b'->'a'. But if the substitutions don't conflict,
2026-02-10 20:35:02 +00:00
it works quickly.< / span > < / span > < / td > < td class = "benchmarkresult" > 843< / td > < td class = "benchmarkresult" > 924< / td > < td class = "benchmarkresult" > 1164< / td > < td class = "benchmarkresult" > 1431< / td > < td class = "benchmarkresult" > 3275< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1347" > replace symbols with std::string find_first_of + replace< / a > < span class = "tooltiptext code" > void ReplaceSymbolsStdStringNaiveRight(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
std::string result{source};
std::string pattern;
for (const auto& r : repl) {
pattern += r.first;
}
size_t start_pos = 0;
while((start_pos = result.find_first_of(pattern, start_pos)) != std::string::npos) {
size_t idx = pattern.find(result[start_pos]);
result.replace(start_pos, 1, repl[idx].second);
start_pos += repl[idx].second.length();
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Дальше уже правильные реализации, не зависящие от конфликтующих замен.
Further, there are correct implementations that do not depend on
2026-02-10 20:35:02 +00:00
conflicting replacements.< / span > < / span > < / td > < td class = "benchmarkresult" > 2378< / td > < td class = "benchmarkresult" > 2915< / td > < td class = "benchmarkresult" > 1997< / td > < td class = "benchmarkresult" > 2636< / td > < td class = "benchmarkresult" > 5069< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1401" > replace symbols with std::string_view find_first_of + copy< / a > < span class = "tooltiptext code" > void ReplaceSymbolsStdString(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
const std::string_view repl_from = " -< >' \" & " ;
const std::string_view repl_to[] = {" " , " & lt;" , " & gt;" , " & #39;" , " & quot;" , " & amp;" };
for (auto _: state) {
std::string result;
for (size_t start = 0; start < source.size();) {
size_t idx = source.find_first_of(repl_from, start);
if (idx == std::string::npos) {
result += source.substr(start);
break;
}
if (idx > start) {
result += source.substr(start, idx - start);
}
size_t what = repl_from.find(source[idx]);
result += repl_to[what];
start = idx + 1;
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1090< / td > < td class = "benchmarkresult" > 1097< / td > < td class = "benchmarkresult" > 2301< / td > < td class = "benchmarkresult" > 2944< / td > < td class = "benchmarkresult" > 3253< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1454" > replace runtime symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1226< / td > < td class = "benchmarkresult" > 1593< / td > < td class = "benchmarkresult" > 1421< / td > < td class = "benchmarkresult" > 1831< / td > < td class = "benchmarkresult" > 3098< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1454" > replace runtime symbols with simstr and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 965< / td > < td class = "benchmarkresult" > 1176< / td > < td class = "benchmarkresult" > 1301< / td > < td class = "benchmarkresult" > 1620< / td > < td class = "benchmarkresult" > 2461< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1501" > replace const symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1100< / td > < td class = "benchmarkresult" > 1365< / td > < td class = "benchmarkresult" > 1201< / td > < td class = "benchmarkresult" > 1505< / td > < td class = "benchmarkresult" > 2686< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1501" > replace const symbols with string expressions and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 837< / td > < td class = "benchmarkresult" > 988< / td > < td class = "benchmarkresult" > 1111< / td > < td class = "benchmarkresult" > 1441< / td > < td class = "benchmarkresult" > 2207< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e s y m b o l s i n t e x t ~ 4 0 0 s y m b o l s ' ] = { i d : ' b s 2 5 ' , t e s t s : [
2026-02-10 20:35:02 +00:00
{name:'Naive (and wrong) replace symbols with std::string find + replace',data:[843,924,1164,1431,3275]},
{name:'replace symbols with std::string find_first_of + replace',data:[2378,2915,1997,2636,5069]},
{name:'replace symbols with std::string_view find_first_of + copy',data:[1090,1097,2301,2944,3253]},
{name:'replace runtime symbols with string expressions and without remembering all search results',data:[1226,1593,1421,1831,3098]},
{name:'replace runtime symbols with simstr and memorization of all search results',data:[965,1176,1301,1620,2461]},
{name:'replace const symbols with string expressions and without remembering all search results',data:[1100,1365,1201,1505,2686]},
{name:'replace const symbols with string expressions and memorization of all search results',data:[837,988,1111,1441,2207]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs26" > < h4 > < a id = "bs96756339547767401190" href = "#bs96756339547767401190" > #< / a > Replace symbols in text ~40 symbols< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-10 20:35:02 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1555" > Short Naive (and wrong) replace symbols with std::string find + replace< / a > < span class = "tooltiptext code" > void ShortReplaceSymbolsStdStringNaiveWrong(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' & ' , " & amp;" },
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" }
};
auto repl_all = [](std::string& str, char s, std::string_view repl) {
size_t start_pos = 0;
while((start_pos = str.find(s, start_pos)) != std::string::npos) {
str.replace(start_pos, 1, repl);
start_pos += repl.length();
}
};
for (auto _: state) {
std::string result{source};
for (const auto& r : repl) {
repl_all(result, r.first, r.second);
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 158< / td > < td class = "benchmarkresult" > 182< / td > < td class = "benchmarkresult" > 304< / td > < td class = "benchmarkresult" > 414< / td > < td class = "benchmarkresult" > 449< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1595" > Short replace symbols with std::string find_first_of + replace< / a > < span class = "tooltiptext code" > void ShortReplaceSymbolsStdStringNaiveRight(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
std::string result{source};
std::string pattern;
for (const auto& r : repl) {
pattern += r.first;
}
size_t start_pos = 0;
while((start_pos = result.find_first_of(pattern, start_pos)) != std::string::npos) {
size_t idx = pattern.find(result[start_pos]);
result.replace(start_pos, 1, repl[idx].second);
start_pos += repl[idx].second.length();
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 304< / td > < td class = "benchmarkresult" > 332< / td > < td class = "benchmarkresult" > 380< / td > < td class = "benchmarkresult" > 504< / td > < td class = "benchmarkresult" > 662< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1635" > Short replace symbols with std::string_view find_first_of + copy< / a > < span class = "tooltiptext code" > void ShortReplaceSymbolsStdString(benchmark::State& state) {
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std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
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const std::string_view repl_from = " -< >' \" & " ;
const std::string_view repl_to[] = {" " , " & lt;" , " & gt;" , " & #39;" , " & quot;" , " & amp;" };
for (auto _: state) {
std::string result;
for (size_t start = 0; start < source.size();) {
size_t idx = source.find_first_of(repl_from, start);
if (idx == std::string::npos) {
result += source.substr(start);
break;
}
if (idx > start) {
result += source.substr(start, idx - start);
}
size_t what = repl_from.find_first_of(source[idx]);
result += repl_to[what];
start = idx + 1;
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 159< / td > < td class = "benchmarkresult" > 189< / td > < td class = "benchmarkresult" > 314< / td > < td class = "benchmarkresult" > 436< / td > < td class = "benchmarkresult" > 455< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1674" > Short replace runtime symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
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void ShortReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 170< / td > < td class = "benchmarkresult" > 214< / td > < td class = "benchmarkresult" > 259< / td > < td class = "benchmarkresult" > 364< / td > < td class = "benchmarkresult" > 405< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1674" > Short replace runtime symbols with simstr and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
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void ShortReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 176< / td > < td class = "benchmarkresult" > 214< / td > < td class = "benchmarkresult" > 336< / td > < td class = "benchmarkresult" > 473< / td > < td class = "benchmarkresult" > 445< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1707" > Short replace const symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
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void ShortReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 127< / td > < td class = "benchmarkresult" > 177< / td > < td class = "benchmarkresult" > 212< / td > < td class = "benchmarkresult" > 309< / td > < td class = "benchmarkresult" > 280< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1707" > Short replace const symbols with string expressions and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
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void ShortReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 139< / td > < td class = "benchmarkresult" > 175< / td > < td class = "benchmarkresult" > 293< / td > < td class = "benchmarkresult" > 404< / td > < td class = "benchmarkresult" > 320< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e s y m b o l s i n t e x t ~ 4 0 s y m b o l s ' ] = { i d : ' b s 2 6 ' , t e s t s : [
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{name:'Short Naive (and wrong) replace symbols with std::string find + replace',data:[158,182,304,414,449]},
{name:'Short replace symbols with std::string find_first_of + replace',data:[304,332,380,504,662]},
{name:'Short replace symbols with std::string_view find_first_of + copy',data:[159,189,314,436,455]},
{name:'Short replace runtime symbols with string expressions and without remembering all search results',data:[170,214,259,364,405]},
{name:'Short replace runtime symbols with simstr and memorization of all search results',data:[176,214,336,473,445]},
{name:'Short replace const symbols with string expressions and without remembering all search results',data:[127,177,212,309,280]},
{name:'Short replace const symbols with string expressions and memorization of all search results',data:[139,175,293,404,320]}
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]}< / script >
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< div class = "benchset" id = "bs27" > < h4 > < a id = "bs77745698784557935900" href = "#bs77745698784557935900" > #< / a > Replace All Str To Longer Size< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1746" > replace bb to ---- in std::string|64< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 156< / td > < td class = "benchmarkresult" > 207< / td > < td class = "benchmarkresult" > 221< / td > < td class = "benchmarkresult" > 282< / td > < td class = "benchmarkresult" > 422< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1746" > replace bb to ---- in std::string|256< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 540< / td > < td class = "benchmarkresult" > 587< / td > < td class = "benchmarkresult" > 732< / td > < td class = "benchmarkresult" > 919< / td > < td class = "benchmarkresult" > 1316< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1746" > replace bb to ---- in std::string|512< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1007< / td > < td class = "benchmarkresult" > 1121< / td > < td class = "benchmarkresult" > 1412< / td > < td class = "benchmarkresult" > 1724< / td > < td class = "benchmarkresult" > 2446< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1746" > replace bb to ---- in std::string|1024< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2290< / td > < td class = "benchmarkresult" > 2606< / td > < td class = "benchmarkresult" > 3187< / td > < td class = "benchmarkresult" > 3706< / td > < td class = "benchmarkresult" > 5109< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1746" > replace bb to ---- in std::string|2048< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5743< / td > < td class = "benchmarkresult" > 6608< / td > < td class = "benchmarkresult" > 7649< / td > < td class = "benchmarkresult" > 9489< / td > < td class = "benchmarkresult" > 11848< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1780" > replace bb to ---- in lstringa< 8>|64< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 134< / td > < td class = "benchmarkresult" > 167< / td > < td class = "benchmarkresult" > 220< / td > < td class = "benchmarkresult" > 288< / td > < td class = "benchmarkresult" > 313< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1780" > replace bb to ---- in lstringa< 8>|256< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 433< / td > < td class = "benchmarkresult" > 555< / td > < td class = "benchmarkresult" > 590< / td > < td class = "benchmarkresult" > 759< / td > < td class = "benchmarkresult" > 997< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1780" > replace bb to ---- in lstringa< 8>|512< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 808< / td > < td class = "benchmarkresult" > 1029< / td > < td class = "benchmarkresult" > 1038< / td > < td class = "benchmarkresult" > 1313< / td > < td class = "benchmarkresult" > 1738< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1780" > replace bb to ---- in lstringa< 8>|1024< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
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void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1654< / td > < td class = "benchmarkresult" > 2079< / td > < td class = "benchmarkresult" > 1942< / td > < td class = "benchmarkresult" > 2382< / td > < td class = "benchmarkresult" > 3403< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1780" > replace bb to ---- in lstringa< 8>|2048< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
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void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3144< / td > < td class = "benchmarkresult" > 3960< / td > < td class = "benchmarkresult" > 3514< / td > < td class = "benchmarkresult" > 4381< / td > < td class = "benchmarkresult" > 6488< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1803" > replace bb to ---- by init stringa|64< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 92.8< / td > < td class = "benchmarkresult" > 116< / td > < td class = "benchmarkresult" > 170< / td > < td class = "benchmarkresult" > 243< / td > < td class = "benchmarkresult" > 197< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1803" > replace bb to ---- by init stringa|256< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 304< / td > < td class = "benchmarkresult" > 334< / td > < td class = "benchmarkresult" > 351< / td > < td class = "benchmarkresult" > 545< / td > < td class = "benchmarkresult" > 637< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1803" > replace bb to ---- by init stringa|512< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 692< / td > < td class = "benchmarkresult" > 826< / td > < td class = "benchmarkresult" > 791< / td > < td class = "benchmarkresult" > 1166< / td > < td class = "benchmarkresult" > 1461< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1803" > replace bb to ---- by init stringa|1024< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1497< / td > < td class = "benchmarkresult" > 1816< / td > < td class = "benchmarkresult" > 1624< / td > < td class = "benchmarkresult" > 2479< / td > < td class = "benchmarkresult" > 3067< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1803" > replace bb to ---- by init stringa|2048< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3011< / td > < td class = "benchmarkresult" > 3707< / td > < td class = "benchmarkresult" > 3034< / td > < td class = "benchmarkresult" > 4975< / td > < td class = "benchmarkresult" > 5928< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e A l l S t r T o L o n g e r S i z e ' ] = { i d : ' b s 2 7 ' , t e s t s : [
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{name:'replace bb to ---- in std::string|64',data:[156,207,221,282,422]},
{name:'replace bb to ---- in std::string|256',data:[540,587,732,919,1316]},
{name:'replace bb to ---- in std::string|512',data:[1007,1121,1412,1724,2446]},
{name:'replace bb to ---- in std::string|1024',data:[2290,2606,3187,3706,5109]},
{name:'replace bb to ---- in std::string|2048',data:[5743,6608,7649,9489,11848]},
{name:'replace bb to ---- in lstringa< 8 > |64',data:[134,167,220,288,313]},
{name:'replace bb to ---- in lstringa< 8 > |256',data:[433,555,590,759,997]},
{name:'replace bb to ---- in lstringa< 8 > |512',data:[808,1029,1038,1313,1738]},
{name:'replace bb to ---- in lstringa< 8 > |1024',data:[1654,2079,1942,2382,3403]},
{name:'replace bb to ---- in lstringa< 8 > |2048',data:[3144,3960,3514,4381,6488]},
{name:'replace bb to ---- by init stringa|64',data:[92.8,116,170,243,197]},
{name:'replace bb to ---- by init stringa|256',data:[304,334,351,545,637]},
{name:'replace bb to ---- by init stringa|512',data:[692,826,791,1166,1461]},
{name:'replace bb to ---- by init stringa|1024',data:[1497,1816,1624,2479,3067]},
{name:'replace bb to ---- by init stringa|2048',data:[3011,3707,3034,4975,5928]}
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]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs28" > < h4 > < a id = "bs74494088982050398630" href = "#bs74494088982050398630" > #< / a > Replace All Str To Same Size< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1825" > replace bb to -- in std::string|64< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 119< / td > < td class = "benchmarkresult" > 144< / td > < td class = "benchmarkresult" > 188< / td > < td class = "benchmarkresult" > 239< / td > < td class = "benchmarkresult" > 274< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1825" > replace bb to -- in std::string|256< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 410< / td > < td class = "benchmarkresult" > 458< / td > < td class = "benchmarkresult" > 453< / td > < td class = "benchmarkresult" > 598< / td > < td class = "benchmarkresult" > 866< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1825" > replace bb to -- in std::string|512< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 741< / td > < td class = "benchmarkresult" > 803< / td > < td class = "benchmarkresult" > 851< / td > < td class = "benchmarkresult" > 1069< / td > < td class = "benchmarkresult" > 1628< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1825" > replace bb to -- in std::string|1024< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1470< / td > < td class = "benchmarkresult" > 1544< / td > < td class = "benchmarkresult" > 1566< / td > < td class = "benchmarkresult" > 1998< / td > < td class = "benchmarkresult" > 3142< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1825" > replace bb to -- in std::string|2048< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-10 20:35:02 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2898< / td > < td class = "benchmarkresult" > 3265< / td > < td class = "benchmarkresult" > 3199< / td > < td class = "benchmarkresult" > 3889< / td > < td class = "benchmarkresult" > 6351< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1858" > replace bb to -- in lstringa< 8>|64< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 95.7< / td > < td class = "benchmarkresult" > 116< / td > < td class = "benchmarkresult" > 181< / td > < td class = "benchmarkresult" > 228< / td > < td class = "benchmarkresult" > 216< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1858" > replace bb to -- in lstringa< 8>|256< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
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void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 284< / td > < td class = "benchmarkresult" > 328< / td > < td class = "benchmarkresult" > 423< / td > < td class = "benchmarkresult" > 517< / td > < td class = "benchmarkresult" > 672< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1858" > replace bb to -- in lstringa< 8>|512< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
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void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 524< / td > < td class = "benchmarkresult" > 643< / td > < td class = "benchmarkresult" > 736< / td > < td class = "benchmarkresult" > 896< / td > < td class = "benchmarkresult" > 1245< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1858" > replace bb to -- in lstringa< 8>|1024< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
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void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1113< / td > < td class = "benchmarkresult" > 1242< / td > < td class = "benchmarkresult" > 1346< / td > < td class = "benchmarkresult" > 1631< / td > < td class = "benchmarkresult" > 2359< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1858" > replace bb to -- in lstringa< 8>|2048< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
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void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2072< / td > < td class = "benchmarkresult" > 2353< / td > < td class = "benchmarkresult" > 2605< / td > < td class = "benchmarkresult" > 3106< / td > < td class = "benchmarkresult" > 4751< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1880" > replace bb to -- by init stringa|64< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 80.2< / td > < td class = "benchmarkresult" > 110< / td > < td class = "benchmarkresult" > 153< / td > < td class = "benchmarkresult" > 213< / td > < td class = "benchmarkresult" > 161< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1880" > replace bb to -- by init stringa|256< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 242< / td > < td class = "benchmarkresult" > 295< / td > < td class = "benchmarkresult" > 344< / td > < td class = "benchmarkresult" > 438< / td > < td class = "benchmarkresult" > 539< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1880" > replace bb to -- by init stringa|512< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 415< / td > < td class = "benchmarkresult" > 558< / td > < td class = "benchmarkresult" > 605< / td > < td class = "benchmarkresult" > 710< / td > < td class = "benchmarkresult" > 828< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1880" > replace bb to -- by init stringa|1024< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 888< / td > < td class = "benchmarkresult" > 1142< / td > < td class = "benchmarkresult" > 1034< / td > < td class = "benchmarkresult" > 1289< / td > < td class = "benchmarkresult" > 1676< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1880" > replace bb to -- by init stringa|2048< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1679< / td > < td class = "benchmarkresult" > 2076< / td > < td class = "benchmarkresult" > 1982< / td > < td class = "benchmarkresult" > 2465< / td > < td class = "benchmarkresult" > 3430< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e A l l S t r T o S a m e S i z e ' ] = { i d : ' b s 2 8 ' , t e s t s : [
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{name:'replace bb to -- in std::string|64',data:[119,144,188,239,274]},
{name:'replace bb to -- in std::string|256',data:[410,458,453,598,866]},
{name:'replace bb to -- in std::string|512',data:[741,803,851,1069,1628]},
{name:'replace bb to -- in std::string|1024',data:[1470,1544,1566,1998,3142]},
{name:'replace bb to -- in std::string|2048',data:[2898,3265,3199,3889,6351]},
{name:'replace bb to -- in lstringa< 8 > |64',data:[95.7,116,181,228,216]},
{name:'replace bb to -- in lstringa< 8 > |256',data:[284,328,423,517,672]},
{name:'replace bb to -- in lstringa< 8 > |512',data:[524,643,736,896,1245]},
{name:'replace bb to -- in lstringa< 8 > |1024',data:[1113,1242,1346,1631,2359]},
{name:'replace bb to -- in lstringa< 8 > |2048',data:[2072,2353,2605,3106,4751]},
{name:'replace bb to -- by init stringa|64',data:[80.2,110,153,213,161]},
{name:'replace bb to -- by init stringa|256',data:[242,295,344,438,539]},
{name:'replace bb to -- by init stringa|512',data:[415,558,605,710,828]},
{name:'replace bb to -- by init stringa|1024',data:[888,1142,1034,1289,1676]},
{name:'replace bb to -- by init stringa|2048',data:[1679,2076,1982,2465,3430]}
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]}< / script >
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< div class = "benchset" id = "bs29" > < h4 > < a id = "bs8410196985047277720" href = "#bs8410196985047277720" > #< / a > Hash Map insert and find< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L1977" > hashStrMapA< size_t> emplace & find stringa;< / a > < span class = "tooltiptext code" > void HashMapSimStr(benchmark::State& state) {
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for (auto _: state) {
hashStrMapA< size_t> store;
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
store.try_emplace(bs_sim[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_sim.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
auto find = store.find(bs_sim[idx]);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вставляем в hashStrMapA 10000 stringa длиной от 30 до 50
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символов, а
We insert 10,000 strings of length from 30 to 50 characters into
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hashStrMapA, and then search for them in it.< / span > < / span > < / td > < td class = "benchmarkresult" > 3543478< / td > < td class = "benchmarkresult" > 4503107< / td > < td class = "benchmarkresult" > 3860152< / td > < td class = "benchmarkresult" > 4964020< / td > < td class = "benchmarkresult" > 3293483< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2001" > std::unordered_map< std::string, size_t> emplace & find std::string;< / a > < span class = "tooltiptext code" > void HashMapStdStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
std::unordered_map< std::string, size_t> store;
for (size_t idx = 0; idx < bs_std.size(); idx++) {
store.try_emplace(bs_std[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_std.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_std.size(); idx++) {
auto find = store.find(bs_std[idx]);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Т о
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Same thing with std::string and std::unordered_map< / span > < / span > < / td > < td class = "benchmarkresult" > 3471945< / td > < td class = "benchmarkresult" > 4213379< / td > < td class = "benchmarkresult" > 5751400< / td > < td class = "benchmarkresult" > 6943346< / td > < td class = "benchmarkresult" > 3533999< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2025" > hashStrMapA< size_t> emplace & find ssa;< / a > < span class = "tooltiptext code" > void HashMapSimSsa(benchmark::State& state) {
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for (auto _: state) {
hashStrMapA< size_t> store;
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
store.emplace(bs_sim[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_sim.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
ssa key = bs_sim[idx];
auto find = store.find(key);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Теперь вставляем stringa, а
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Now we insert stringa and search for ssa< / span > < / span > < / td > < td class = "benchmarkresult" > 3607100< / td > < td class = "benchmarkresult" > 4560080< / td > < td class = "benchmarkresult" > 3389482< / td > < td class = "benchmarkresult" > 4594823< / td > < td class = "benchmarkresult" > 3281552< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2050" > std::unordered_map< std::string, size_t> emplace & find std::string_view;< / a > < span class = "tooltiptext code" > void HashMapStdStrView(benchmark::State& state) {
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for (auto _: state) {
std::unordered_map< std::string, size_t> store;
for (size_t idx = 0; idx < bs_std.size(); idx++) {
store.emplace(bs_std[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_std.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_std.size(); idx++) {
std::string_view key = bs_std[idx];
auto find = store.find(std::string{key});
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вставляем std::string, а
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We insert std::string and look for std::string_view< / span > < / span > < / td > < td class = "benchmarkresult" > 4101611< / td > < td class = "benchmarkresult" > 5115138< / td > < td class = "benchmarkresult" > 6573724< / td > < td class = "benchmarkresult" > 7269646< / td > < td class = "benchmarkresult" > 4070724< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' H a s h M a p i n s e r t a n d f i n d ' ] = { i d : ' b s 2 9 ' , t e s t s : [
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{name:'hashStrMapA< size_t > emplace & find stringa;',data:[3543478,4503107,3860152,4964020,3293483]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string;',data:[3471945,4213379,5751400,6943346,3533999]},
{name:'hashStrMapA< size_t > emplace & find ssa;',data:[3607100,4560080,3389482,4594823,3281552]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string_view;',data:[4101611,5115138,6573724,7269646,4070724]}
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]}< / script >
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< div class = "benchset" id = "bs30" > < h4 > < a id = "bs131384792586914680410" href = "#bs131384792586914680410" > #< / a > Build Full Func Name< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2260" > Build func full name std::string;< / a > < span class = "tooltiptext code" > std::string build_full_name_std() const {
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std::string str{has_ret_type_resolver ? " any" sv : type_names_sv[(unsigned)ret_type]};
str += " " ;
str += std_name;
str += " (" ;
bool add_comma = false;
for (const auto& param : params) {
if (add_comma) {
str += " , " ;
}
if (param.optional) {
str += " [" ;
}
param.allowed_types.to_stdstr(str);
if (param.optional) {
str += " ]" ;
}
add_comma = true;
}
if (unlim_params) {
if (add_comma) {
str += " , " ;
}
str += " ..." ;
}
str += " )" ;
//std::cout < < " Len=" < < str.length() < < " , Cap=" < < str.capacity() < < " \n" ;
return str;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Обыденная задача, подобные часто могут встретится в работе:
По неким данным сгенерировать текст. В
о с
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возвращаемого значения. Алгоритм на std::string.
A common task, similar to this one, can often be encountered in work:
Generate text from given data. In this case, using data
on certain functions, generate their full names with parameter types and
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return values. The algorithm uses std::string.< / span > < / span > < / td > < td class = "benchmarkresult" > 691< / td > < td class = "benchmarkresult" > 1092< / td > < td class = "benchmarkresult" > 1507< / td > < td class = "benchmarkresult" > 1863< / td > < td class = "benchmarkresult" > 3518< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2292" > Build func full name std::string 1;< / a > < span class = "tooltiptext code" > std::string build_full_name_std1() const {
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std::string str{has_ret_type_resolver ? " any" sv : type_names_sv[(unsigned)ret_type]};
str += " " + std_name + " (" ;
bool add_comma = false;
for (const auto& param : params) {
if (add_comma) {
str += " , " ;
}
if (param.optional) {
str += " [" ;
}
param.allowed_types.to_stdstr(str);
if (param.optional) {
str += " ]" ;
}
add_comma = true;
}
if (unlim_params) {
if (add_comma) {
str += " , " ;
}
str += " ..." ;
}
str += " )" ;
//std::cout < < " Len=" < < str.length() < < " , Cap=" < < str.capacity() < < " \n" ;
return str;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Почти тот же алгоритм, но несколько последовательных
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+= к строке заменены на одно += + + +.
Almost the same algorithm, but several consecutive
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+= to a string are replaced with a single += + + +.< / span > < / span > < / td > < td class = "benchmarkresult" > 813< / td > < td class = "benchmarkresult" > 1171< / td > < td class = "benchmarkresult" > 1502< / td > < td class = "benchmarkresult" > 2021< / td > < td class = "benchmarkresult" > 3668< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2322" > Build func full name std::stream;< / a > < span class = "tooltiptext code" > std::string build_full_name_stream() const {
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std::ostringstream str;
if (has_ret_type_resolver) {
str < < " any" ;
} else {
str < < type_names_sv[(unsigned)ret_type];
}
str < < " " < < std_name < < " (" ;
bool add_comma = false;
for (const auto& param : params) {
if (add_comma) {
str < < " , " ;
}
if (param.optional) {
str < < " [" ;
}
param.allowed_types.to_stream(str);
if (param.optional) {
str < < " ]" ;
}
add_comma = true;
}
if (unlim_params) {
if (add_comma) {
str < < " , " ;
}
str < < " ..." ;
}
str < < " )" ;
return str.str();
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Строим имя функции через std::ostringstream и < <
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We construct the function name through std::ostringstream and < < < / span > < / span > < / td > < td class = "benchmarkresult" > 2594< / td > < td class = "benchmarkresult" > 2921< / td > < td class = "benchmarkresult" > 7853< / td > < td class = "benchmarkresult" > 11156< / td > < td class = "benchmarkresult" > 12436< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2233" > Build func full name stringa;< / a > < span class = "tooltiptext code" > stringa build_full_name() const {
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lstringa< 512> str = e_choice(has_ret_type_resolver, " any" , type_names[(unsigned)ret_type]) + " " + name + " (" ;
bool add_comma = false;
for (const auto& param : params) {
str += e_if(add_comma, " , " ) + e_if(param.optional, " [" );
param.allowed_types.to_simstr(str);
if (param.optional) {
str += " ]" ;
}
add_comma = true;
}
return str + e_if(unlim_params, e_if(add_comma, " , " ) + " ..." ) + " )" ;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Реализация на simstr строках и строковых выражениях.
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Инфа о
Implementation using simstr strings and string expressions.
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Parameter information is appended to the current line.< / span > < / span > < / td > < td class = "benchmarkresult" > 487< / td > < td class = "benchmarkresult" > 552< / td > < td class = "benchmarkresult" > 784< / td > < td class = "benchmarkresult" > 1063< / td > < td class = "benchmarkresult" > 1711< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.6/bench/bench_str.cpp#L2248" > Build func full name stringa 1;< / a > < span class = "tooltiptext code" > stringa build_full_name1() const {
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lstringa< 512> str = e_choice(has_ret_type_resolver, " any" , type_names[(unsigned)ret_type]) + " " + name + " (" ;
bool add_comma = false;
for (const auto& param : params) {
str += e_if(add_comma, " , " ) + e_if(param.optional, " [" ) + param.allowed_types.get_simstr() + e_if(param.optional, " ]" );
add_comma = true;
}
return str + e_if(unlim_params, e_if(add_comma, " , " ) + " ..." ) + " )" ;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Реализация на simstr строках и строковых выражениях.
Инфа о а
разом добавляется в текущую строку. Позволяет операции в цикле
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записать в одну строку, но чуть проигрывает по времени выполнения.
Implementation using simstr strings and string expressions.
Parameter information is added to a temporary string, and then
all at once to the current string. This allows loop operations
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to be written in a single string, but is slightly slower in execution time.< / span > < / span > < / td > < td class = "benchmarkresult" > 637< / td > < td class = "benchmarkresult" > 746< / td > < td class = "benchmarkresult" > 908< / td > < td class = "benchmarkresult" > 1235< / td > < td class = "benchmarkresult" > 1966< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' B u i l d F u l l F u n c N a m e ' ] = { i d : ' b s 3 0 ' , t e s t s : [
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{name:'Build func full name std::string;',data:[691,1092,1507,1863,3518]},
{name:'Build func full name std::string 1;',data:[813,1171,1502,2021,3668]},
{name:'Build func full name std::stream;',data:[2594,2921,7853,11156,12436]},
{name:'Build func full name stringa;',data:[487,552,784,1063,1711]},
{name:'Build func full name stringa 1;',data:[637,746,908,1235,1966]}
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]}< / script > < / body > < / html >
