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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: 0.44, 0.78, 0.52
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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: 0.00, 0.00, 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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L48" > 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" > 218< / td > < td class = "benchmarkresult" > 202< / td > < td class = "benchmarkresult" > 269< / td > < td class = "benchmarkresult" > 324< / td > < td class = "benchmarkresult" > 1217< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L59" > 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" > 104< / td > < td class = "benchmarkresult" > 98.4< / td > < td class = "benchmarkresult" > 155< / td > < td class = "benchmarkresult" > 213< / td > < td class = "benchmarkresult" > 576< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L70" > 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" > 64.2< / td > < td class = "benchmarkresult" > 72.3< / td > < td class = "benchmarkresult" > 70.3< / td > < td class = "benchmarkresult" > 107< / td > < td class = "benchmarkresult" > 284< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L81" > 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" > 71.3< / td > < td class = "benchmarkresult" > 77.3< / td > < td class = "benchmarkresult" > 74.8< / td > < td class = "benchmarkresult" > 119< / td > < td class = "benchmarkresult" > 257< / 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:[218,202,269,324,1217]},
{name:'Concat std::string and number by StrExpr to std::string',data:[104,98.4,155,213,576]},
{name:'Concat stringa and number by StrExpr to simstr::stringa',data:[64.2,72.3,70.3,107,284]},
{name:'Concat stringa and number by e_concat to simstr::stringa',data:[71.3,77.3,74.8,119,257]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L98" > 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" > 686< / td > < td class = "benchmarkresult" > 680< / td > < td class = "benchmarkresult" > 720< / td > < td class = "benchmarkresult" > 1041< / td > < td class = "benchmarkresult" > 2352< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L111" > 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" > 894< / td > < td class = "benchmarkresult" > 970< / td > < td class = "benchmarkresult" > 1498< / td > < td class = "benchmarkresult" > 1901< / td > < td class = "benchmarkresult" > 2837< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L123" > 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" > 201< / td > < td class = "benchmarkresult" > 189< / td > < td class = "benchmarkresult" > 196< / td > < td class = "benchmarkresult" > 255< / td > < td class = "benchmarkresult" > 730< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L138" > 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" > 133< / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 81.1< / td > < td class = "benchmarkresult" > 118< / td > < td class = "benchmarkresult" > 501< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L151" > 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" > 117< / td > < td class = "benchmarkresult" > 123< / td > < td class = "benchmarkresult" > 72.6< / td > < td class = "benchmarkresult" > 101< / td > < td class = "benchmarkresult" > 214< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L164" > 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" > 124< / td > < td class = "benchmarkresult" > 129< / td > < td class = "benchmarkresult" > 81.6< / td > < td class = "benchmarkresult" > 105< / td > < td class = "benchmarkresult" > 211< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L177" > 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);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 186< / td > < td class = "benchmarkresult" > 176< / td > < td class = "benchmarkresult" > 150< / td > < td class = "benchmarkresult" > 174< / td > < td class = "benchmarkresult" > 347< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L189" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 318< / td > < td class = "benchmarkresult" > 296< / td > < td class = "benchmarkresult" > 299< / td > < td class = "benchmarkresult" > 357< / td > < td class = "benchmarkresult" > 912< / 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 + 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 : [
2026-02-08 11:17:03 +00:00
{name:'Concat std::string and format hex number and literal to std::string',data:[686,680,720,1041,2352]},
{name:'std::format std::string and hex number by literal to std::string',data:[894,970,1498,1901,2837]},
{name:'Concat std::string and std::to_chars and string to std::string',data:[201,189,196,255,730]},
{name:'Concat std::string and hex number and literal by StrExpr to std::string',data:[133,133,81.1,118,501]},
{name:'Concat stringa and hex number and literal by StrExpr to simstr::stringa',data:[117,123,72.6,101,214]},
{name:'Concat stringa and hex number and literal by e_concat to simstr::stringa',data:[124,129,81.6,105,211]},
{name:'Subst stringa and hex number by e_subst literal to simstr::stringa',data:[186,176,150,174,347]},
{name:'Subst stringa and hex number by e_vsubst stra to simstr::stringa',data:[318,296,299,357,912]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L211" > " 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);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 274< / td > < td class = "benchmarkresult" > 261< / td > < td class = "benchmarkresult" > 663< / td > < td class = "benchmarkresult" > 695< / td > < td class = "benchmarkresult" > 436< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L220" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 348< / td > < td class = "benchmarkresult" > 322< / td > < td class = "benchmarkresult" > 745< / td > < td class = "benchmarkresult" > 817< / td > < td class = "benchmarkresult" > 672< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L229" > e_vsubst(pattern, i / 0x8a010_fmt)< / a > < span class = "tooltiptext code" > void VSubstSimToSimOct(benchmark::State& state) {
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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 619< / td > < td class = "benchmarkresult" > 600< / td > < td class = "benchmarkresult" > 1095< / td > < td class = "benchmarkresult" > 1144< / td > < td class = "benchmarkresult" > 1446< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L269" > 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) {
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std::string str = fmt::format(FMT_COMPILE(" abcdefghihklmopqr {:#010o} end" ), i);
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benchmark::DoNotOptimize(str);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 685< / td > < td class = "benchmarkresult" > 767< / td > < td class = "benchmarkresult" > 1399< / td > < td class = "benchmarkresult" > 1570< / td > < td class = "benchmarkresult" > 2218< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L278" > fmt::format(" abcdefghihklmopqr {:#010o} end" , i)< / a > < span class = "tooltiptext code" > void FmtFormat(benchmark::State& state) {
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = fmt::format(" abcdefghihklmopqr {:#010o} end" , i);
benchmark::DoNotOptimize(str);
}
}
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 880< / td > < td class = "benchmarkresult" > 814< / td > < td class = "benchmarkresult" > 1377< / td > < td class = "benchmarkresult" > 1473< / td > < td class = "benchmarkresult" > 2848< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L239" > std::format(" abcdefghihklmopqr {:#010o} end" , i)< / a > < span class = "tooltiptext code" > void FormatStdToStdOct(benchmark::State& state) {
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = std::format(" abcdefghihklmopqr {:#010o} end" , i);
benchmark::DoNotOptimize(str);
}
}
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1021< / td > < td class = "benchmarkresult" > 1245< / td > < td class = "benchmarkresult" > 1590< / td > < td class = "benchmarkresult" > 1941< / td > < td class = "benchmarkresult" > 3033< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L248" > std::vformat(pattern, std::make_format_args(i))< / a > < span class = "tooltiptext code" > void VFormatStdToStdOct(benchmark::State& state) {
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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1017< / td > < td class = "benchmarkresult" > 1135< / td > < td class = "benchmarkresult" > 1604< / td > < td class = "benchmarkresult" > 1947< / td > < td class = "benchmarkresult" > 3038< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L258" > 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" ;
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std::string str = strm.str();
benchmark::DoNotOptimize(str);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2068< / td > < td class = "benchmarkresult" > 2152< / td > < td class = "benchmarkresult" > 6560< / td > < td class = "benchmarkresult" > 7402< / td > < td class = "benchmarkresult" > 8529< / td > < / tr >
< / 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 : [
{name:'"abcdefghihklmopqr "_ss + i / 0x8a010_fmt + " end"',data:[274,261,663,695,436]},
{name:'e_subst("abcdefghihklmopqr {} end", i / 0x8a010_fmt)',data:[348,322,745,817,672]},
{name:'e_vsubst(pattern, i / 0x8a010_fmt)',data:[619,600,1095,1144,1446]},
{name:'fmt::format(FMT_COMPILE("abcdefghihklmopqr {:#010o} end"), i)',data:[685,767,1399,1570,2218]},
{name:'fmt::format("abcdefghihklmopqr {:#010o} end", i)',data:[880,814,1377,1473,2848]},
{name:'std::format("abcdefghihklmopqr {:#010o} end", i)',data:[1021,1245,1590,1941,3033]},
{name:'std::vformat(pattern, std::make_format_args(i))',data:[1017,1135,1604,1947,3038]},
{name:'strm < < "abcdefghihklmopqr 0" < < std::oct < < std::setw ( 9 ) < < std::setfill ( \ ' 0 \ ' ) < < i < < " end " ' , data: [ 2068 , 2152 , 6560 , 7402 , 8529 ] }
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L298" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 45.0< / td > < td class = "benchmarkresult" > 45.2< / td > < td class = "benchmarkresult" > 39.5< / td > < td class = "benchmarkresult" > 55.5< / td > < td class = "benchmarkresult" > 124< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L309" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 31.7< / td > < td class = "benchmarkresult" > 36.1< / td > < td class = "benchmarkresult" > 38.7< / td > < td class = "benchmarkresult" > 82.4< / td > < td class = "benchmarkresult" > 133< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L320" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 30.4< / td > < td class = "benchmarkresult" > 27.8< / td > < td class = "benchmarkresult" > 29.5< / td > < td class = "benchmarkresult" > 53.5< / td > < td class = "benchmarkresult" > 103< / 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 + " L i t e r a l " ' ] = { i d : ' b s 4 ' , t e s t s : [
2026-02-08 11:17:03 +00:00
{name:'Concat std::string by std to std::string',data:[45.0,45.2,39.5,55.5,124]},
{name:'Concat std::string by StrExpr to std::string',data:[31.7,36.1,38.7,82.4,133]},
{name:'Concat stringa by StrExpr to stringa',data:[30.4,27.8,29.5,53.5,103]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L336" > Find concat three std::string< / a > < span class = "tooltiptext code" > size_t find_pos_str(std::string_view src, std::string_view name) {
2026-01-21 11:59:17 +00:00
// 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" > 128< / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 208< / td > < td class = "benchmarkresult" > 229< / td > < td class = "benchmarkresult" > 214< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L341" > 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" > 56.6< / td > < td class = "benchmarkresult" > 43.5< / td > < td class = "benchmarkresult" > 123< / td > < td class = "benchmarkresult" > 122< / td > < td class = "benchmarkresult" > 108< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L345" > 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" > 19.9< / td > < td class = "benchmarkresult" > 20.3< / td > < td class = "benchmarkresult" > 28.0< / td > < td class = "benchmarkresult" > 28.7< / td > < td class = "benchmarkresult" > 63.2< / 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:[128,131,208,229,214]},
{name:'Find concat three strexpr',data:[56.6,43.5,123,122,108]},
{name:'Find concat three simstr',data:[19.9,20.3,28.0,28.7,63.2]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L405" > 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" > 7.20< / td > < td class = "benchmarkresult" > 12.3< / td > < td class = "benchmarkresult" > 8.30< / td > < td class = "benchmarkresult" > 17.4< / td > < td class = "benchmarkresult" > 21.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L417" > 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" > 7.40< / td > < td class = "benchmarkresult" > 7.07< / td > < td class = "benchmarkresult" > 7.64< / td > < td class = "benchmarkresult" > 12.9< / td > < td class = "benchmarkresult" > 27.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L424" > 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" > 4.97< / td > < td class = "benchmarkresult" > 5.18< / td > < td class = "benchmarkresult" > 8.09< / td > < td class = "benchmarkresult" > 15.3< / td > < td class = "benchmarkresult" > 20.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L405" > 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" > 56.2< / td > < td class = "benchmarkresult" > 86.8< / td > < td class = "benchmarkresult" > 61.1< / td > < td class = "benchmarkresult" > 79.9< / td > < td class = "benchmarkresult" > 368< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L417" > 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" > 31.3< / td > < td class = "benchmarkresult" > 27.5< / td > < td class = "benchmarkresult" > 32.4< / td > < td class = "benchmarkresult" > 39.2< / td > < td class = "benchmarkresult" > 124< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L424" > 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" > 23.4< / td > < td class = "benchmarkresult" > 22.4< / td > < td class = "benchmarkresult" > 25.4< / td > < td class = "benchmarkresult" > 36.5< / td > < td class = "benchmarkresult" > 77.3< / 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:[7.20,12.3,8.30,17.4,21.9]},
{name:'BuildTypeNameExp 0/0',data:[7.40,7.07,7.64,12.9,27.7]},
{name:'BuildTypeNameSim 0/0',data:[4.97,5.18,8.09,15.3,20.4]},
{name:'BuildTypeNameStr 10/10',data:[56.2,86.8,61.1,79.9,368]},
{name:'BuildTypeNameExp 10/10',data:[31.3,27.5,32.4,39.2,124]},
{name:'BuildTypeNameSim 10/10',data:[23.4,22.4,25.4,36.5,77.3]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L478" > 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" > 201< / td > < td class = "benchmarkresult" > 235< / td > < td class = "benchmarkresult" > 317< / td > < td class = "benchmarkresult" > 343< / td > < td class = "benchmarkresult" > 514< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L496" > 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" > 151< / td > < td class = "benchmarkresult" > 136< / td > < td class = "benchmarkresult" > 218< / td > < td class = "benchmarkresult" > 219< / td > < td class = "benchmarkresult" > 243< / 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:[201,235,317,343,514]},
{name:'Concat with replace exp',data:[151,136,218,219,243]}
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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 >
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L530" > std::string 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 > < 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" > 1.12< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 2.61< / td > < td class = "benchmarkresult" > 2.16< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L530" > 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" > 0.392< / td > < td class = "benchmarkresult" > 0.753< / td > < td class = "benchmarkresult" > 0.369< / td > < td class = "benchmarkresult" > 1.87< / td > < td class = "benchmarkresult" > 0.743< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L530" > 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" > 0.392< / td > < td class = "benchmarkresult" > 0.186< / td > < td class = "benchmarkresult" > 0.365< / td > < td class = "benchmarkresult" > 1.83< / td > < td class = "benchmarkresult" > 0.367< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L530" > stringa 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" > 0.755< / td > < td class = "benchmarkresult" > 0.757< / td > < td class = "benchmarkresult" > 0.738< / td > < td class = "benchmarkresult" > 2.23< / 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/rel1.6.5/bench/bench_str.cpp#L530" > lstringa< 20> 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" > 1.12< / td > < td class = "benchmarkresult" > 1.13< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 2.62< / 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/rel1.6.5/bench/bench_str.cpp#L530" > lstringa< 40> 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" > 1.15< / td > < td class = "benchmarkresult" > 1.17< / td > < td class = "benchmarkresult" > 1.13< / td > < td class = "benchmarkresult" > 2.58< / td > < td class = "benchmarkresult" > 2.44< / 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 : [
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{name:'std::string e;',data:[1.12,1.11,1.11,2.61,2.16]},
{name:'std::string_view e;',data:[0.392,0.753,0.369,1.87,0.743]},
{name:'ssa e;',data:[0.392,0.186,0.365,1.83,0.367]},
{name:'stringa e;',data:[0.755,0.757,0.738,2.23,2.18]},
{name:'lstringa< 20 > e;',data:[1.12,1.13,1.11,2.62,2.21]},
{name:'lstringa< 40 > e;',data:[1.15,1.17,1.13,2.58,2.44]}
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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 >
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L545" > std::string 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" > Короткий литерал помещается во внутренний буфер std::string,
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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" > 1.87< / td > < td class = "benchmarkresult" > 1.87< / td > < td class = "benchmarkresult" > 1.86< / td > < td class = "benchmarkresult" > 2.60< / td > < td class = "benchmarkresult" > 2.45< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L545" > 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" > 0.748< / td > < td class = "benchmarkresult" > 0.749< / td > < td class = "benchmarkresult" > 0.735< / td > < td class = "benchmarkresult" > 1.85< / 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/rel1.6.5/bench/bench_str.cpp#L545" > 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" > 0.375< / td > < td class = "benchmarkresult" > 0.755< / td > < td class = "benchmarkresult" > 0.371< / td > < td class = "benchmarkresult" > 1.85< / 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/rel1.6.5/bench/bench_str.cpp#L545" > 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" > 1.14< / td > < td class = "benchmarkresult" > 1.13< / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 2.55< / 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/rel1.6.5/bench/bench_str.cpp#L545" > 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" > 1.87< / td > < td class = "benchmarkresult" > 1.92< / td > < td class = "benchmarkresult" > 1.87< / td > < td class = "benchmarkresult" > 2.66< / td > < td class = "benchmarkresult" > 2.77< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L545" > 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" > 1.91< / td > < td class = "benchmarkresult" > 1.88< / td > < td class = "benchmarkresult" > 1.90< / td > < td class = "benchmarkresult" > 2.55< / td > < td class = "benchmarkresult" > 2.94< / 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:[1.87,1.87,1.86,2.60,2.45]},
{name:'std::string_view e = "Test text";',data:[0.748,0.749,0.735,1.85,1.10]},
{name:'ssa e = "Test text";',data:[0.375,0.755,0.371,1.85,0.732]},
{name:'stringa e = "Test text";',data:[1.14,1.13,1.09,2.55,2.21]},
{name:'lstringa< 20 > e = "Test text";',data:[1.87,1.92,1.87,2.66,2.77]},
{name:'lstringa< 40 > e = "Test text";',data:[1.91,1.88,1.90,2.55,2.94]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L560" > 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" > 19.4< / td > < td class = "benchmarkresult" > 18.6< / td > < td class = "benchmarkresult" > 75.9< / td > < td class = "benchmarkresult" > 76.9< / td > < td class = "benchmarkresult" > 22.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L560" > 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" > 0.735< / td > < td class = "benchmarkresult" > 0.751< / td > < td class = "benchmarkresult" > 0.746< / td > < td class = "benchmarkresult" > 1.84< / 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/rel1.6.5/bench/bench_str.cpp#L560" > 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" > 0.370< / td > < td class = "benchmarkresult" > 0.744< / td > < td class = "benchmarkresult" > 0.365< / td > < td class = "benchmarkresult" > 1.83< / td > < td class = "benchmarkresult" > 0.734< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L560" > 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" > 1.12< / td > < td class = "benchmarkresult" > 1.14< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 2.89< / td > < td class = "benchmarkresult" > 2.19< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L560" > 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" > 20.6< / td > < td class = "benchmarkresult" > 20.8< / td > < td class = "benchmarkresult" > 74.9< / td > < td class = "benchmarkresult" > 75.7< / td > < td class = "benchmarkresult" > 23.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L560" > 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" > 2.57< / td > < td class = "benchmarkresult" > 1.87< / td > < td class = "benchmarkresult" > 2.58< / td > < td class = "benchmarkresult" > 3.32< / td > < td class = "benchmarkresult" > 3.11< / 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:[19.4,18.6,75.9,76.9,22.8]},
{name:'std::string_view e = "123456789012345678901234567890";',data:[0.735,0.751,0.746,1.84,1.10]},
{name:'ssa e = "123456789012345678901234567890";',data:[0.370,0.744,0.365,1.83,0.734]},
{name:'stringa e = "123456789012345678901234567890";',data:[1.12,1.14,1.11,2.89,2.19]},
{name:'lstringa< 20 > e = "123456789012345678901234567890";',data:[20.6,20.8,74.9,75.7,23.2]},
{name:'lstringa< 40 > e = "123456789012345678901234567890";',data:[2.57,1.87,2.58,3.32,3.11]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L575" > 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" > 4.92< / td > < td class = "benchmarkresult" > 5.65< / td > < td class = "benchmarkresult" > 1.89< / td > < td class = "benchmarkresult" > 5.13< / td > < td class = "benchmarkresult" > 3.69< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L575" > 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" > 0.379< / td > < td class = "benchmarkresult" > 0.375< / td > < td class = "benchmarkresult" > 0.375< / td > < td class = "benchmarkresult" > 3.81< / 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/rel1.6.5/bench/bench_str.cpp#L575" > 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" > 0.375< / td > < td class = "benchmarkresult" > 0.394< / td > < td class = "benchmarkresult" > 0.374< / td > < td class = "benchmarkresult" > 3.83< / 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/rel1.6.5/bench/bench_str.cpp#L575" > 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" > 1.10< / td > < td class = "benchmarkresult" > 1.17< / td > < td class = "benchmarkresult" > 1.33< / td > < td class = "benchmarkresult" > 4.07< / td > < td class = "benchmarkresult" > 2.54< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L575" > 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" > 4.54< / td > < td class = "benchmarkresult" > 4.69< / td > < td class = "benchmarkresult" > 5.31< / td > < td class = "benchmarkresult" > 7.68< / td > < td class = "benchmarkresult" > 15.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L575" > 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" > 4.54< / td > < td class = "benchmarkresult" > 4.96< / td > < td class = "benchmarkresult" > 5.19< / td > < td class = "benchmarkresult" > 8.13< / td > < td class = "benchmarkresult" > 17.3< / 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:[4.92,5.65,1.89,5.13,3.69]},
{name:'std::string_view e = "Test text"; auto c{e};',data:[0.379,0.375,0.375,3.81,1.10]},
{name:'ssa e = "Test text"; auto c{e};',data:[0.375,0.394,0.374,3.83,1.10]},
{name:'stringa e = "Test text"; auto c{e};',data:[1.10,1.17,1.33,4.07,2.54]},
{name:'lstringa< 20 > e = "Test text"; auto c{e};',data:[4.54,4.69,5.31,7.68,15.5]},
{name:'lstringa< 40 > e = "Test text"; auto c{e};',data:[4.54,4.96,5.19,8.13,17.3]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L592" > 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" > 23.3< / td > < td class = "benchmarkresult" > 74.0< / td > < td class = "benchmarkresult" > 79.2< / td > < td class = "benchmarkresult" > 50.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L592" > 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" > 0.740< / td > < td class = "benchmarkresult" > 0.750< / td > < td class = "benchmarkresult" > 0.748< / td > < td class = "benchmarkresult" > 1.83< / 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/rel1.6.5/bench/bench_str.cpp#L592" > 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" > 0.376< / td > < td class = "benchmarkresult" > 0.744< / td > < td class = "benchmarkresult" > 0.369< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 0.738< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L592" > 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" > 1.12< / td > < td class = "benchmarkresult" > 1.12< / td > < td class = "benchmarkresult" > 1.85< / td > < td class = "benchmarkresult" > 3.01< / td > < td class = "benchmarkresult" > 2.16< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L592" > 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" > 20.8< / td > < td class = "benchmarkresult" > 19.7< / td > < td class = "benchmarkresult" > 76.8< / td > < td class = "benchmarkresult" > 81.2< / td > < td class = "benchmarkresult" > 22.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L592" > 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" > 4.54< / td > < td class = "benchmarkresult" > 4.59< / td > < td class = "benchmarkresult" > 4.90< / td > < td class = "benchmarkresult" > 7.05< / td > < td class = "benchmarkresult" > 16.5< / 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:[19.0,23.3,74.0,79.2,50.4]},
{name:'std::string_view e = "123456789012345678901234567890"; auto c{e};',data:[0.740,0.750,0.748,1.83,1.10]},
{name:'ssa e = "123456789012345678901234567890"; auto c{e};',data:[0.376,0.744,0.369,1.84,0.738]},
{name:'stringa e = "123456789012345678901234567890"; auto c{e};',data:[1.12,1.12,1.85,3.01,2.16]},
{name:'lstringa< 20 > e = "123456789012345678901234567890"; auto c{e};',data:[20.8,19.7,76.8,81.2,22.7]},
{name:'lstringa< 40 > e = "123456789012345678901234567890"; auto c{e};',data:[4.54,4.59,4.90,7.05,16.5]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L609" > 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
2026-01-21 11:59:17 +00:00
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" > 6.94< / td > < td class = "benchmarkresult" > 7.01< / td > < td class = "benchmarkresult" > 39.7< / td > < td class = "benchmarkresult" > 41.8< / td > < td class = "benchmarkresult" > 44.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L609" > 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" > 7.84< / td > < td class = "benchmarkresult" > 6.92< / td > < td class = "benchmarkresult" > 39.5< / td > < td class = "benchmarkresult" > 39.8< / td > < td class = "benchmarkresult" > 45.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L609" > 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" > 7.49< / td > < td class = "benchmarkresult" > 6.48< / td > < td class = "benchmarkresult" > 18.0< / td > < td class = "benchmarkresult" > 22.1< / td > < td class = "benchmarkresult" > 43.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L609" > 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" > 8.04< / td > < td class = "benchmarkresult" > 6.86< / td > < td class = "benchmarkresult" > 18.8< / td > < td class = "benchmarkresult" > 30.6< / td > < td class = "benchmarkresult" > 44.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L609" > 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" > 7.71< / td > < td class = "benchmarkresult" > 6.56< / td > < td class = "benchmarkresult" > 17.9< / td > < td class = "benchmarkresult" > 22.0< / td > < td class = "benchmarkresult" > 39.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L609" > 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" > 6.91< / td > < td class = "benchmarkresult" > 6.50< / td > < td class = "benchmarkresult" > 17.7< / td > < td class = "benchmarkresult" > 20.9< / td > < td class = "benchmarkresult" > 41.8< / 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:[6.94,7.01,39.7,41.8,44.8]},
{name:'std::string_view::find;',data:[7.84,6.92,39.5,39.8,45.9]},
{name:'ssa::find;',data:[7.49,6.48,18.0,22.1,43.9]},
{name:'stringa::find;',data:[8.04,6.86,18.8,30.6,44.5]},
{name:'lstringa< 20 > ::find;',data:[7.71,6.56,17.9,22.0,39.8]},
{name:'lstringa< 40 > ::find;',data:[6.91,6.50,17.7,20.9,41.8]}
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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 >
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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" > 4.90< / td > < td class = "benchmarkresult" > 5.84< / td > < td class = "benchmarkresult" > 1.86< / td > < td class = "benchmarkresult" > 4.46< / td > < td class = "benchmarkresult" > 52.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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
2026-02-08 11:17:03 +00:00
smaller, as far as I remember: 11 characters + 0.< / span > < / span > < / td > < td class = "benchmarkresult" > 22.5< / td > < td class = "benchmarkresult" > 25.1< / td > < td class = "benchmarkresult" > 76.9< / td > < td class = "benchmarkresult" > 84.6< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Дальше просто добавляется время на копирование байтов.
2026-02-08 11:17:03 +00:00
Then the time for copying bytes is simply added.< / span > < / span > < / td > < td class = "benchmarkresult" > 23.0< / td > < td class = "benchmarkresult" > 24.9< / td > < td class = "benchmarkresult" > 76.5< / td > < td class = "benchmarkresult" > 86.8< / td > < td class = "benchmarkresult" > 51.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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" > 23.2< / td > < td class = "benchmarkresult" > 24.9< / td > < td class = "benchmarkresult" > 77.5< / td > < td class = "benchmarkresult" > 86.0< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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" > 23.1< / td > < td class = "benchmarkresult" > 24.8< / td > < td class = "benchmarkresult" > 85.7< / td > < td class = "benchmarkresult" > 89.2< / td > < td class = "benchmarkresult" > 53.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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" > 22.4< / td > < td class = "benchmarkresult" > 24.7< / td > < td class = "benchmarkresult" > 80.1< / td > < td class = "benchmarkresult" > 86.3< / 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/rel1.6.5/bench/bench_str.cpp#L632" > std::string copy{str_with_len_N};/128< / 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" > 24.2< / td > < td class = "benchmarkresult" > 26.2< / td > < td class = "benchmarkresult" > 82.7< / td > < td class = "benchmarkresult" > 90.5< / td > < td class = "benchmarkresult" > 56.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > std::string copy{str_with_len_N};/256< / 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 24.0< / td > < td class = "benchmarkresult" > 26.7< / td > < td class = "benchmarkresult" > 86.8< / td > < td class = "benchmarkresult" > 93.4< / td > < td class = "benchmarkresult" > 63.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > std::string copy{str_with_len_N};/512< / 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" > 29.2< / td > < td class = "benchmarkresult" > 32.7< / td > < td class = "benchmarkresult" > 88.4< / td > < td class = "benchmarkresult" > 94.6< / td > < td class = "benchmarkresult" > 61.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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" > 48.3< / td > < td class = "benchmarkresult" > 52.0< / td > < td class = "benchmarkresult" > 97.2< / td > < td class = "benchmarkresult" > 103< / td > < td class = "benchmarkresult" > 68.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 139< / td > < td class = "benchmarkresult" > 93.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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.
2026-02-08 11:17:03 +00:00
The longer the string, the longer it takes to create a copy.< / span > < / span > < / td > < td class = "benchmarkresult" > 155< / td > < td class = "benchmarkresult" > 158< / td > < td class = "benchmarkresult" > 179< / td > < td class = "benchmarkresult" > 184< / td > < td class = "benchmarkresult" > 139< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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" > 1.12< / td > < td class = "benchmarkresult" > 1.33< / td > < td class = "benchmarkresult" > 1.33< / td > < td class = "benchmarkresult" > 4.06< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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" > 1.12< / td > < td class = "benchmarkresult" > 1.34< / td > < td class = "benchmarkresult" > 1.32< / td > < td class = "benchmarkresult" > 4.06< / td > < td class = "benchmarkresult" > 4.84< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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
2026-02-08 11:17:03 +00:00
copies faster than 15 in std::string.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.32< / td > < td class = "benchmarkresult" > 1.31< / td > < td class = "benchmarkresult" > 4.06< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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.
2026-02-08 11:17:03 +00:00
Time is added for the atomic counter increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.4< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 18.9< / td > < td class = "benchmarkresult" > 5.01< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > stringa 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" > 16.2< / td > < td class = "benchmarkresult" > 16.5< / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 19.3< / td > < td class = "benchmarkresult" > 4.89< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +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" > 18.7< / td > < td class = "benchmarkresult" > 4.90< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > stringa copy{str_with_len_N};/128< / 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.5< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 18.6< / td > < td class = "benchmarkresult" > 4.89< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.6< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 19.2< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.8< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 19.0< / td > < td class = "benchmarkresult" > 4.84< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.9< / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 19.1< / td > < td class = "benchmarkresult" > 4.84< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 17.4< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 18.7< / td > < td class = "benchmarkresult" > 4.80< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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
2026-02-08 11:17:03 +00:00
increment; copying time does not depend on the string length.< / span > < / span > < / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 16.4< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 18.5< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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.
2026-02-08 11:17:03 +00:00
WASM has a 32-bit architecture, so SSO is up to 19 characters.< / span > < / span > < / td > < td class = "benchmarkresult" > 4.52< / td > < td class = "benchmarkresult" > 4.63< / td > < td class = "benchmarkresult" > 4.96< / td > < td class = "benchmarkresult" > 7.52< / td > < td class = "benchmarkresult" > 16.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.53< / td > < td class = "benchmarkresult" > 4.66< / td > < td class = "benchmarkresult" > 4.78< / td > < td class = "benchmarkresult" > 7.34< / td > < td class = "benchmarkresult" > 16.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.14< / td > < td class = "benchmarkresult" > 4.59< / td > < td class = "benchmarkresult" > 4.98< / td > < td class = "benchmarkresult" > 7.58< / td > < td class = "benchmarkresult" > 38.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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.
2026-02-08 11:17:03 +00:00
And then it starts to behave like std::string when copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 26.2< / td > < td class = "benchmarkresult" > 24.7< / td > < td class = "benchmarkresult" > 78.7< / td > < td class = "benchmarkresult" > 80.3< / td > < td class = "benchmarkresult" > 37.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.9< / td > < td class = "benchmarkresult" > 24.7< / td > < td class = "benchmarkresult" > 85.9< / td > < td class = "benchmarkresult" > 83.1< / td > < td class = "benchmarkresult" > 42.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.4< / td > < td class = "benchmarkresult" > 26.0< / td > < td class = "benchmarkresult" > 82.8< / td > < td class = "benchmarkresult" > 83.9< / td > < td class = "benchmarkresult" > 47.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 26.9< / td > < td class = "benchmarkresult" > 26.7< / td > < td class = "benchmarkresult" > 85.4< / td > < td class = "benchmarkresult" > 86.0< / td > < td class = "benchmarkresult" > 44.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 26.9< / td > < td class = "benchmarkresult" > 27.5< / td > < td class = "benchmarkresult" > 87.0< / td > < td class = "benchmarkresult" > 87.0< / td > < td class = "benchmarkresult" > 50.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 30.4< / td > < td class = "benchmarkresult" > 30.3< / td > < td class = "benchmarkresult" > 87.9< / td > < td class = "benchmarkresult" > 89.9< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 110< / td > < td class = "benchmarkresult" > 114< / td > < td class = "benchmarkresult" > 93.8< / td > < td class = "benchmarkresult" > 99.9< / td > < td class = "benchmarkresult" > 57.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 118< / td > < td class = "benchmarkresult" > 125< / td > < td class = "benchmarkresult" > 126< / td > < td class = "benchmarkresult" > 130< / td > < td class = "benchmarkresult" > 82.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 135< / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 192< / td > < td class = "benchmarkresult" > 192< / td > < td class = "benchmarkresult" > 126< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.99< / td > < td class = "benchmarkresult" > 4.50< / td > < td class = "benchmarkresult" > 5.34< / td > < td class = "benchmarkresult" > 8.58< / td > < td class = "benchmarkresult" > 15.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.88< / td > < td class = "benchmarkresult" > 4.64< / td > < td class = "benchmarkresult" > 5.25< / td > < td class = "benchmarkresult" > 8.44< / td > < td class = "benchmarkresult" > 15.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.82< / td > < td class = "benchmarkresult" > 4.61< / td > < td class = "benchmarkresult" > 5.26< / td > < td class = "benchmarkresult" > 8.61< / td > < td class = "benchmarkresult" > 16.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.86< / td > < td class = "benchmarkresult" > 4.60< / td > < td class = "benchmarkresult" > 5.35< / td > < td class = "benchmarkresult" > 8.64< / td > < td class = "benchmarkresult" > 14.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.58< / td > < td class = "benchmarkresult" > 4.17< / td > < td class = "benchmarkresult" > 8.10< / td > < td class = "benchmarkresult" > 11.6< / td > < td class = "benchmarkresult" > 17.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.00< / td > < td class = "benchmarkresult" > 5.83< / td > < td class = "benchmarkresult" > 8.22< / td > < td class = "benchmarkresult" > 11.7< / td > < td class = "benchmarkresult" > 17.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.38< / td > < td class = "benchmarkresult" > 7.34< / td > < td class = "benchmarkresult" > 8.79< / td > < td class = "benchmarkresult" > 12.2< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 8.50< / td > < td class = "benchmarkresult" > 17.3< / td > < td class = "benchmarkresult" > 9.80< / td > < td class = "benchmarkresult" > 13.0< / td > < td class = "benchmarkresult" > 20.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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
2026-02-08 11:17:03 +00:00
allocation or atomic increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 10.8< / td > < td class = "benchmarkresult" > 10.6< / td > < td class = "benchmarkresult" > 11.6< / td > < td class = "benchmarkresult" > 14.7< / 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/rel1.6.5/bench/bench_str.cpp#L632" > 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
2026-02-08 11:17:03 +00:00
And then it's like everyone else.< / span > < / span > < / td > < td class = "benchmarkresult" > 106< / td > < td class = "benchmarkresult" > 109< / td > < td class = "benchmarkresult" > 96.6< / td > < td class = "benchmarkresult" > 96.6< / td > < td class = "benchmarkresult" > 58.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 117< / td > < td class = "benchmarkresult" > 118< / td > < td class = "benchmarkresult" > 123< / td > < td class = "benchmarkresult" > 137< / td > < td class = "benchmarkresult" > 80.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L632" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 127< / td > < td class = "benchmarkresult" > 132< / td > < td class = "benchmarkresult" > 194< / td > < td class = "benchmarkresult" > 195< / td > < td class = "benchmarkresult" > 123< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::string copy{str_with_len_N};/15',data:[4.90,5.84,1.86,4.46,52.4]},
{name:'std::string copy{str_with_len_N};/16',data:[22.5,25.1,76.9,84.6,52.0]},
{name:'std::string copy{str_with_len_N};/23',data:[23.0,24.9,76.5,86.8,51.2]},
{name:'std::string copy{str_with_len_N};/24',data:[23.2,24.9,77.5,86.0,51.3]},
{name:'std::string copy{str_with_len_N};/32',data:[23.1,24.8,85.7,89.2,53.9]},
{name:'std::string copy{str_with_len_N};/64',data:[22.4,24.7,80.1,86.3,56.8]},
{name:'std::string copy{str_with_len_N};/128',data:[24.2,26.2,82.7,90.5,56.4]},
{name:'std::string copy{str_with_len_N};/256',data:[24.0,26.7,86.8,93.4,63.7]},
{name:'std::string copy{str_with_len_N};/512',data:[29.2,32.7,88.4,94.6,61.7]},
{name:'std::string copy{str_with_len_N};/1024',data:[48.3,52.0,97.2,103,68.6]},
{name:'std::string copy{str_with_len_N};/2048',data:[131,133,131,139,93.9]},
{name:'std::string copy{str_with_len_N};/4096',data:[155,158,179,184,139]},
{name:'stringa copy{str_with_len_N};/15',data:[1.12,1.33,1.33,4.06,2.42]},
{name:'stringa copy{str_with_len_N};/16',data:[1.12,1.34,1.32,4.06,4.84]},
{name:'stringa copy{str_with_len_N};/23',data:[1.11,1.32,1.31,4.06,4.79]},
{name:'stringa copy{str_with_len_N};/24',data:[16.3,16.4,16.1,18.9,5.01]},
{name:'stringa copy{str_with_len_N};/32',data:[16.2,16.5,16.2,19.3,4.89]},
{name:'stringa copy{str_with_len_N};/64',data:[16.3,16.5,16.0,18.7,4.90]},
{name:'stringa copy{str_with_len_N};/128',data:[16.3,16.5,16.1,18.6,4.89]},
{name:'stringa copy{str_with_len_N};/256',data:[16.3,16.6,16.1,19.2,4.81]},
{name:'stringa copy{str_with_len_N};/512',data:[16.3,16.8,16.1,19.0,4.84]},
{name:'stringa copy{str_with_len_N};/1024',data:[16.3,16.9,16.3,19.1,4.84]},
{name:'stringa copy{str_with_len_N};/2048',data:[16.3,17.4,16.1,18.7,4.80]},
{name:'stringa copy{str_with_len_N};/4096',data:[16.3,16.4,16.1,18.5,4.79]},
{name:'lstringa< 16 > copy{str_with_len_N};/15',data:[4.52,4.63,4.96,7.52,16.0]},
{name:'lstringa< 16 > copy{str_with_len_N};/16',data:[4.53,4.66,4.78,7.34,16.4]},
{name:'lstringa< 16 > copy{str_with_len_N};/23',data:[5.14,4.59,4.98,7.58,38.8]},
{name:'lstringa< 16 > copy{str_with_len_N};/24',data:[26.2,24.7,78.7,80.3,37.3]},
{name:'lstringa< 16 > copy{str_with_len_N};/32',data:[23.9,24.7,85.9,83.1,42.4]},
{name:'lstringa< 16 > copy{str_with_len_N};/64',data:[25.4,26.0,82.8,83.9,47.2]},
{name:'lstringa< 16 > copy{str_with_len_N};/128',data:[26.9,26.7,85.4,86.0,44.4]},
{name:'lstringa< 16 > copy{str_with_len_N};/256',data:[26.9,27.5,87.0,87.0,50.3]},
{name:'lstringa< 16 > copy{str_with_len_N};/512',data:[30.4,30.3,87.9,89.9,48.5]},
{name:'lstringa< 16 > copy{str_with_len_N};/1024',data:[110,114,93.8,99.9,57.8]},
{name:'lstringa< 16 > copy{str_with_len_N};/2048',data:[118,125,126,130,82.1]},
{name:'lstringa< 16 > copy{str_with_len_N};/4096',data:[135,131,192,192,126]},
{name:'lstringa< 512 > copy{str_with_len_N};/15',data:[4.99,4.50,5.34,8.58,15.3]},
{name:'lstringa< 512 > copy{str_with_len_N};/16',data:[4.88,4.64,5.25,8.44,15.3]},
{name:'lstringa< 512 > copy{str_with_len_N};/23',data:[4.82,4.61,5.26,8.61,16.1]},
{name:'lstringa< 512 > copy{str_with_len_N};/24',data:[4.86,4.60,5.35,8.64,14.8]},
{name:'lstringa< 512 > copy{str_with_len_N};/32',data:[4.58,4.17,8.10,11.6,17.8]},
{name:'lstringa< 512 > copy{str_with_len_N};/64',data:[6.00,5.83,8.22,11.7,17.6]},
{name:'lstringa< 512 > copy{str_with_len_N};/128',data:[6.38,7.34,8.79,12.2,19.0]},
{name:'lstringa< 512 > copy{str_with_len_N};/256',data:[8.50,17.3,9.80,13.0,20.7]},
{name:'lstringa< 512 > copy{str_with_len_N};/512',data:[10.8,10.6,11.6,14.7,23.4]},
{name:'lstringa< 512 > copy{str_with_len_N};/1024',data:[106,109,96.6,96.6,58.5]},
{name:'lstringa< 512 > copy{str_with_len_N};/2048',data:[117,118,123,137,80.2]},
{name:'lstringa< 512 > copy{str_with_len_N};/4096',data:[127,132,194,195,123]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< 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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L647" > 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) {
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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.
2026-02-08 11:17:03 +00:00
Here, I attempted to run tests that are similar in logic to std::from_chars.< / span > < / span > < / td > < td class = "benchmarkresult" > 26.7< / td > < td class = "benchmarkresult" > 27.4< / td > < td class = "benchmarkresult" > 31.0< / td > < td class = "benchmarkresult" > 33.2< / td > < td class = "benchmarkresult" > 91.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L686" > 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
2026-02-08 11:17:03 +00:00
signs, spaces, 0x prefixes, etc.< / span > < / span > < / td > < td class = "benchmarkresult" > 15.1< / td > < td class = "benchmarkresult" > 13.1< / td > < td class = "benchmarkresult" > 13.7< / td > < td class = "benchmarkresult" > 14.0< / td > < td class = "benchmarkresult" > 27.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L714" > stringa s = " 123456789" ; int res = s.to_int< int, true, 10, false>< / a > < span class = "tooltiptext code" > template< typename T>
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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,
2026-02-08 11:17:03 +00:00
decimal system, no leading spaces, and no plus sign.< / span > < / span > < / td > < td class = "benchmarkresult" > 12.9< / td > < td class = "benchmarkresult" > 8.35< / td > < td class = "benchmarkresult" > 14.2< / td > < td class = "benchmarkresult" > 15.0< / td > < td class = "benchmarkresult" > 19.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L714" > 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) {
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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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 13.0< / td > < td class = "benchmarkresult" > 8.31< / td > < td class = "benchmarkresult" > 13.8< / td > < td class = "benchmarkresult" > 15.4< / td > < td class = "benchmarkresult" > 19.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L714" > 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) {
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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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 13.0< / td > < td class = "benchmarkresult" > 8.29< / td > < td class = "benchmarkresult" > 13.7< / td > < td class = "benchmarkresult" > 15.4< / 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 5 ' , t e s t s : [
2026-02-08 11:17:03 +00:00
{name:'std::string s = "123456789"; int res = std::strtol(s.c_str(), 0, 10);',data:[26.7,27.4,31.0,33.2,91.6]},
{name:'std::string_view s = "123456789"; std::from_chars(s.data(), s.data() + s.size(), res, 10);',data:[15.1,13.1,13.7,14.0,27.8]},
{name:'stringa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[12.9,8.35,14.2,15.0,19.2]},
{name:'ssa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[13.0,8.31,13.8,15.4,19.2]},
{name:'lstringa< 20 > s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[13.0,8.29,13.7,15.4,19.3]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L660" > 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
2026-02-08 11:17:03 +00:00
Everything is the same, only for the hexadecimal system< / span > < / span > < / td > < td class = "benchmarkresult" > 23.9< / td > < td class = "benchmarkresult" > 23.8< / td > < td class = "benchmarkresult" > 34.5< / td > < td class = "benchmarkresult" > 37.1< / td > < td class = "benchmarkresult" > 70.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L700" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 9.72< / td > < td class = "benchmarkresult" > 9.88< / td > < td class = "benchmarkresult" > 8.45< / td > < td class = "benchmarkresult" > 12.8< / td > < td class = "benchmarkresult" > 26.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L729" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 11.6< / td > < td class = "benchmarkresult" > 8.40< / td > < td class = "benchmarkresult" > 12.8< / td > < td class = "benchmarkresult" > 13.9< / 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/rel1.6.5/bench/bench_str.cpp#L729" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 12.7< / td > < td class = "benchmarkresult" > 8.50< / td > < td class = "benchmarkresult" > 12.3< / td > < td class = "benchmarkresult" > 12.7< / td > < td class = "benchmarkresult" > 19.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L729" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 11.4< / td > < td class = "benchmarkresult" > 7.90< / td > < td class = "benchmarkresult" > 12.0< / td > < td class = "benchmarkresult" > 14.1< / td > < td class = "benchmarkresult" > 20.0< / 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 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::string s = "abcDef"; int res = std::strtol(s.c_str(), 0, 16);',data:[23.9,23.8,34.5,37.1,70.4]},
{name:'std::string_view s = "abcDef"; std::from_chars(s.data(), s.data() + s.size(), res, 16);',data:[9.72,9.88,8.45,12.8,26.1]},
{name:'stringa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[11.6,8.40,12.8,13.9,19.8]},
{name:'ssa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[12.7,8.50,12.3,12.7,19.9]},
{name:'lstringa< 20 > s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[11.4,7.90,12.0,14.1,20.0]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L673" > 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
2026-02-08 11:17:03 +00:00
And here we have parsing of an arbitrary number.< / span > < / span > < / td > < td class = "benchmarkresult" > 28.9< / td > < td class = "benchmarkresult" > 29.3< / td > < td class = "benchmarkresult" > 43.6< / td > < td class = "benchmarkresult" > 46.0< / td > < td class = "benchmarkresult" > 99.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L744" > stringa s = " 123456789" ; int res = s.to_int< int>; // Check overflow< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void ToIntSimStr0(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>().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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 18.7< / td > < td class = "benchmarkresult" > 21.8< / td > < td class = "benchmarkresult" > 25.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L759" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 15.2< / td > < td class = "benchmarkresult" > 10.9< / td > < td class = "benchmarkresult" > 15.5< / td > < td class = "benchmarkresult" > 17.4< / td > < td class = "benchmarkresult" > 19.6< / 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:[28.9,29.3,43.6,46.0,99.8]},
{name:'stringa s = " 123456789"; int res = s.to_int< int > ; // Check overflow',data:[19.2,16.0,18.7,21.8,25.1]},
{name:'ssa s = " 123456789"; int res = s.to_int< int , false > ; // No check overflow',data:[15.2,10.9,15.5,17.4,19.6]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L790" > 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" > 64.6< / td > < td class = "benchmarkresult" > 64.3< / td > < td class = "benchmarkresult" > 103< / td > < td class = "benchmarkresult" > 102< / td > < td class = "benchmarkresult" > 306< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L807" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.0< / td > < td class = "benchmarkresult" > 24.7< / td > < td class = "benchmarkresult" > 59.6< / td > < td class = "benchmarkresult" > 84.9< / td > < td class = "benchmarkresult" > 110< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L823" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.8< / td > < td class = "benchmarkresult" > 25.0< / td > < td class = "benchmarkresult" > 36.7< / td > < td class = "benchmarkresult" > 37.1< / 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:[64.6,64.3,103,102,306]},
{name:'std::string_view s = "1234.567e10"; std::from_chars(s.data(), s.data() + s.size(), res);',data:[25.0,24.7,59.6,84.9,110]},
{name:'ssa s = "1234.567e10"; double res = *s.to_double()',data:[25.8,25.0,36.7,37.1,42.9]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L847" > 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" > 1350< / td > < td class = "benchmarkresult" > 1394< / td > < td class = "benchmarkresult" > 4798< / td > < td class = "benchmarkresult" > 5731< / td > < td class = "benchmarkresult" > 6574< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L866" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 392< / td > < td class = "benchmarkresult" > 388< / td > < td class = "benchmarkresult" > 1101< / td > < td class = "benchmarkresult" > 1326< / td > < td class = "benchmarkresult" > 811< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L882" > 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" > 394< / td > < td class = "benchmarkresult" > 401< / td > < td class = "benchmarkresult" > 756< / td > < td class = "benchmarkresult" > 980< / td > < td class = "benchmarkresult" > 737< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L882" > 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
2026-01-21 11:59:17 +00:00
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" > 274< / td > < td class = "benchmarkresult" > 285< / td > < td class = "benchmarkresult" > 390< / td > < td class = "benchmarkresult" > 538< / td > < td class = "benchmarkresult" > 650< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L882" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 261< / td > < td class = "benchmarkresult" > 262< / td > < td class = "benchmarkresult" > 231< / td > < td class = "benchmarkresult" > 373< / td > < td class = "benchmarkresult" > 473< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L882" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 138< / td > < td class = "benchmarkresult" > 143< / td > < td class = "benchmarkresult" > 146< / td > < td class = "benchmarkresult" > 249< / td > < td class = "benchmarkresult" > 429< / 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 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::stringstream str; ... str < < "abbaabbaabbaabba";',data:[1350,1394,4798,5731,6574]},
{name:'std::string str; ... str += "abbaabbaabbaabba";',data:[392,388,1101,1326,811]},
{name:'lstringa< 8 > str; ... str += "abbaabbaabbaabba";',data:[394,401,756,980,737]},
{name:'lstringa< 128 > str; ... str += "abbaabbaabbaabba";',data:[274,285,390,538,650]},
{name:'lstringa< 512 > str; ... str += "abbaabbaabbaabba";',data:[261,262,231,373,473]},
{name:'lstringa< 1024 > str; ... str += "abbaabbaabbaabba";',data:[138,143,146,249,429]}
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]}< / script >
2026-02-03 07:38:21 +00:00
< 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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L907" > std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStreamStrConstLiteral(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 < 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1357< / td > < td class = "benchmarkresult" > 1403< / td > < td class = "benchmarkresult" > 4654< / td > < td class = "benchmarkresult" > 5544< / td > < td class = "benchmarkresult" > 7037< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L927" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1293< / td > < td class = "benchmarkresult" > 1269< / td > < td class = "benchmarkresult" > 3826< / td > < td class = "benchmarkresult" > 4025< / td > < td class = "benchmarkresult" > 2266< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L945" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 481< / td > < td class = "benchmarkresult" > 466< / td > < td class = "benchmarkresult" > 730< / td > < td class = "benchmarkresult" > 841< / td > < td class = "benchmarkresult" > 992< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L945" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 357< / td > < td class = "benchmarkresult" > 402< / td > < td class = "benchmarkresult" > 461< / td > < td class = "benchmarkresult" > 548< / td > < td class = "benchmarkresult" > 851< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L945" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 329< / td > < td class = "benchmarkresult" > 341< / td > < td class = "benchmarkresult" > 304< / td > < td class = "benchmarkresult" > 382< / td > < td class = "benchmarkresult" > 706< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L945" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 236< / td > < td class = "benchmarkresult" > 249< / td > < td class = "benchmarkresult" > 212< / td > < td class = "benchmarkresult" > 270< / td > < td class = "benchmarkresult" > 677< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; ' , data: [ 1357 , 1403 , 4654 , 5544 , 7037 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba";',data:[1293,1269,3826,4025,2266]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba";',data:[481,466,730,841,992]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba";',data:[357,402,461,548,851]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba";',data:[329,341,304,382,706]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba";',data:[236,249,212,270,677]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L973" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 74335< / td > < td class = "benchmarkresult" > 74823< / td > < td class = "benchmarkresult" > 218672< / td > < td class = "benchmarkresult" > 285142< / td > < td class = "benchmarkresult" > 347176< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L993" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 71474< / td > < td class = "benchmarkresult" > 72449< / td > < td class = "benchmarkresult" > 193765< / td > < td class = "benchmarkresult" > 198228< / td > < td class = "benchmarkresult" > 124333< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1011" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 19267< / td > < td class = "benchmarkresult" > 21114< / td > < td class = "benchmarkresult" > 19712< / td > < td class = "benchmarkresult" > 25031< / td > < td class = "benchmarkresult" > 50774< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1011" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 19355< / td > < td class = "benchmarkresult" > 17678< / td > < td class = "benchmarkresult" > 16887< / td > < td class = "benchmarkresult" > 22562< / td > < td class = "benchmarkresult" > 46223< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1011" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 17654< / td > < td class = "benchmarkresult" > 17782< / td > < td class = "benchmarkresult" > 16377< / td > < td class = "benchmarkresult" > 21974< / td > < td class = "benchmarkresult" > 46054< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1011" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 15871< / td > < td class = "benchmarkresult" > 17685< / td > < td class = "benchmarkresult" > 16381< / td > < td class = "benchmarkresult" > 21580< / td > < td class = "benchmarkresult" > 45846< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; 2048 times ' , data: [ 74335 , 74823 , 218672 , 285142 , 347176 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[71474,72449,193765,198228,124333]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[19267,21114,19712,25031,50774]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[19355,17678,16887,22562,46223]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[17654,17782,16377,21974,46054]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[15871,17685,16381,21580,45846]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1038" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1407< / td > < td class = "benchmarkresult" > 1413< / td > < td class = "benchmarkresult" > 4521< / td > < td class = "benchmarkresult" > 5468< / td > < td class = "benchmarkresult" > 7255< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1060" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1382< / td > < td class = "benchmarkresult" > 1410< / td > < td class = "benchmarkresult" > 4020< / td > < td class = "benchmarkresult" > 4027< / td > < td class = "benchmarkresult" > 2567< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1081" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 534< / td > < td class = "benchmarkresult" > 535< / td > < td class = "benchmarkresult" > 801< / td > < td class = "benchmarkresult" > 916< / td > < td class = "benchmarkresult" > 1192< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1081" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 436< / td > < td class = "benchmarkresult" > 459< / td > < td class = "benchmarkresult" > 531< / td > < td class = "benchmarkresult" > 608< / td > < td class = "benchmarkresult" > 1050< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1081" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 404< / td > < td class = "benchmarkresult" > 405< / td > < td class = "benchmarkresult" > 386< / td > < td class = "benchmarkresult" > 467< / td > < td class = "benchmarkresult" > 936< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1081" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 290< / td > < td class = "benchmarkresult" > 310< / td > < td class = "benchmarkresult" > 285< / td > < td class = "benchmarkresult" > 342< / td > < td class = "benchmarkresult" > 887< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::stringstream str; ... str < < str_var1 < < str_var2 ; ' , data: [ 1407 , 1413 , 4521 , 5468 , 7255 ] } ,
{name:'std::string str; ... str += str_var1 + str_var2;',data:[1382,1410,4020,4027,2567]},
{name:'lstringa< 16 > str; ... str += str_var1 + str_var2;',data:[534,535,801,916,1192]},
{name:'lstringa< 128 > str; ... str += str_var1 + str_var2;',data:[436,459,531,608,1050]},
{name:'lstringa< 512 > str; ... str += str_var1 + str_var2;',data:[404,405,386,467,936]},
{name:'lstringa< 1024 > str; ... str += str_var1 + str_var2;',data:[290,310,285,342,887]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1110" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3004< / td > < td class = "benchmarkresult" > 3059< / td > < td class = "benchmarkresult" > 11080< / td > < td class = "benchmarkresult" > 11644< / td > < td class = "benchmarkresult" > 11693< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1128" > std::string str = " test = " + std::to_string(k) + " times" ;< / a > < span class = "tooltiptext code" > void AppendStdStringStrNumStr(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 = " 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 480< / td > < td class = "benchmarkresult" > 449< / td > < td class = "benchmarkresult" > 1104< / td > < td class = "benchmarkresult" > 1260< / td > < td class = "benchmarkresult" > 1717< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1144" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1412< / td > < td class = "benchmarkresult" > 1525< / td > < td class = "benchmarkresult" > 2849< / td > < td class = "benchmarkresult" > 2894< / td > < td class = "benchmarkresult" > 5454< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1162" > 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);
}
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1166< / td > < td class = "benchmarkresult" > 1283< / td > < td class = "benchmarkresult" > 1859< / td > < td class = "benchmarkresult" > 2408< / td > < td class = "benchmarkresult" > 2880< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1178" > 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
2026-02-08 11:17:03 +00:00
string without allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 1407< / td > < td class = "benchmarkresult" > 1688< / td > < td class = "benchmarkresult" > 2069< / td > < td class = "benchmarkresult" > 2700< / td > < td class = "benchmarkresult" > 4935< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1178" > lstringa< 32> 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" > А
2026-02-08 11:17:03 +00:00
And it fits in this one. Use buffers of the appropriate size right away.< / span > < / span > < / td > < td class = "benchmarkresult" > 1015< / td > < td class = "benchmarkresult" > 1113< / td > < td class = "benchmarkresult" > 1013< / td > < td class = "benchmarkresult" > 1546< / td > < td class = "benchmarkresult" > 4130< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1196" > 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.
2026-02-08 11:17:03 +00:00
The result does not fit into SSO, an allocation occurs.< / span > < / span > < / td > < td class = "benchmarkresult" > 309< / td > < td class = "benchmarkresult" > 315< / td > < td class = "benchmarkresult" > 875< / td > < td class = "benchmarkresult" > 888< / td > < td class = "benchmarkresult" > 576< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1196" > 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.
2026-02-08 11:17:03 +00:00
Once again, use appropriately sized buffers from the start.< / span > < / span > < / td > < td class = "benchmarkresult" > 154< / td > < td class = "benchmarkresult" > 168< / td > < td class = "benchmarkresult" > 157< / td > < td class = "benchmarkresult" > 187< / td > < td class = "benchmarkresult" > 348< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1196" > stringa 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" > 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
2026-02-08 11:17:03 +00:00
enough to accommodate the result, hence the long time.< / span > < / span > < / td > < td class = "benchmarkresult" > 145< / td > < td class = "benchmarkresult" > 159< / td > < td class = "benchmarkresult" > 153< / td > < td class = "benchmarkresult" > 235< / td > < td class = "benchmarkresult" > 610< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::stringstream str; str < < "test = " < < k < < " times " ; ' , data: [ 3004 , 3059 , 11080 , 11644 , 11693 ] } ,
{name:'std::string str = "test = " + std::to_string(k) + " times";',data:[480,449,1104,1260,1717]},
{name:'char buf[100]; sprintf(buf, "test = %u times", k); std::string str = buf;',data:[1412,1525,2849,2894,5454]},
{name:'std::string str = std::format("test = {} times", k);',data:[1166,1283,1859,2408,2880]},
{name:'lstringa< 8 > str; str.format("test = {} times", k);',data:[1407,1688,2069,2700,4935]},
{name:'lstringa< 32 > str; str.format("test = {} times", k);',data:[1015,1113,1013,1546,4130]},
{name:'lstringa< 8 > str = "test = " + k + " times";',data:[309,315,875,888,576]},
{name:'lstringa< 32 > str = "test = " + k + " times";',data:[154,168,157,187,348]},
{name:'stringa str = "test = " + k + " times";',data:[145,159,153,235,610]}
2025-04-05 14:21:11 +00:00
]}< / 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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1226" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 267< / td > < td class = "benchmarkresult" > 271< / td > < td class = "benchmarkresult" > 546< / td > < td class = "benchmarkresult" > 547< / td > < td class = "benchmarkresult" > 735< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1250" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 152< / td > < td class = "benchmarkresult" > 135< / td > < td class = "benchmarkresult" > 166< / td > < td class = "benchmarkresult" > 307< / td > < td class = "benchmarkresult" > 244< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1267" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 200< / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 193< / td > < td class = "benchmarkresult" > 218< / td > < td class = "benchmarkresult" > 278< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'std::string::find + substr + std::strtol',data:[267,271,546,547,735]},
{name:'ssa::splitter + ssa::as_int',data:[152,135,166,307,244]},
{name:'ssa::splitf + functor',data:[200,133,193,218,278]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1288" > 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,
2026-02-08 11:17:03 +00:00
it works quickly.< / span > < / span > < / td > < td class = "benchmarkresult" > 863< / td > < td class = "benchmarkresult" > 846< / td > < td class = "benchmarkresult" > 1116< / td > < td class = "benchmarkresult" > 1184< / td > < td class = "benchmarkresult" > 3050< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1342" > 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
2026-02-08 11:17:03 +00:00
conflicting replacements.< / span > < / span > < / td > < td class = "benchmarkresult" > 2429< / td > < td class = "benchmarkresult" > 2347< / td > < td class = "benchmarkresult" > 2075< / td > < td class = "benchmarkresult" > 2271< / td > < td class = "benchmarkresult" > 4955< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1396" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1090< / td > < td class = "benchmarkresult" > 1136< / td > < td class = "benchmarkresult" > 2461< / td > < td class = "benchmarkresult" > 2625< / td > < td class = "benchmarkresult" > 3059< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1449" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1298< / td > < td class = "benchmarkresult" > 1475< / td > < td class = "benchmarkresult" > 1456< / td > < td class = "benchmarkresult" > 1627< / td > < td class = "benchmarkresult" > 3223< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1449" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1046< / td > < td class = "benchmarkresult" > 1158< / td > < td class = "benchmarkresult" > 1328< / td > < td class = "benchmarkresult" > 1457< / td > < td class = "benchmarkresult" > 2579< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1496" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1045< / td > < td class = "benchmarkresult" > 1290< / td > < td class = "benchmarkresult" > 1171< / td > < td class = "benchmarkresult" > 1301< / td > < td class = "benchmarkresult" > 2637< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1496" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 888< / td > < td class = "benchmarkresult" > 982< / td > < td class = "benchmarkresult" > 1215< / td > < td class = "benchmarkresult" > 1292< / td > < td class = "benchmarkresult" > 2389< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'Naive (and wrong) replace symbols with std::string find + replace',data:[863,846,1116,1184,3050]},
{name:'replace symbols with std::string find_first_of + replace',data:[2429,2347,2075,2271,4955]},
{name:'replace symbols with std::string_view find_first_of + copy',data:[1090,1136,2461,2625,3059]},
{name:'replace runtime symbols with string expressions and without remembering all search results',data:[1298,1475,1456,1627,3223]},
{name:'replace runtime symbols with simstr and memorization of all search results',data:[1046,1158,1328,1457,2579]},
{name:'replace const symbols with string expressions and without remembering all search results',data:[1045,1290,1171,1301,2637]},
{name:'replace const symbols with string expressions and memorization of all search results',data:[888,982,1215,1292,2389]}
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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1550" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 168< / td > < td class = "benchmarkresult" > 167< / td > < td class = "benchmarkresult" > 320< / td > < td class = "benchmarkresult" > 356< / td > < td class = "benchmarkresult" > 439< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1590" > 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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 320< / td > < td class = "benchmarkresult" > 326< / td > < td class = "benchmarkresult" > 382< / td > < td class = "benchmarkresult" > 448< / td > < td class = "benchmarkresult" > 654< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1630" > Short replace symbols with std::string_view find_first_of + copy< / a > < span class = "tooltiptext code" > void ShortReplaceSymbolsStdString(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
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_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);
}
2026-02-08 11:17:03 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 164< / td > < td class = "benchmarkresult" > 170< / td > < td class = "benchmarkresult" > 330< / td > < td class = "benchmarkresult" > 366< / td > < td class = "benchmarkresult" > 511< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1669" > 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" > 184< / td > < td class = "benchmarkresult" > 199< / td > < td class = "benchmarkresult" > 257< / td > < td class = "benchmarkresult" > 320< / td > < td class = "benchmarkresult" > 388< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1669" > 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" > 194< / td > < td class = "benchmarkresult" > 226< / td > < td class = "benchmarkresult" > 355< / td > < td class = "benchmarkresult" > 416< / td > < td class = "benchmarkresult" > 451< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1702" > 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" > 133< / td > < td class = "benchmarkresult" > 164< / td > < td class = "benchmarkresult" > 222< / td > < td class = "benchmarkresult" > 260< / td > < td class = "benchmarkresult" > 268< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1702" > 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" > 148< / td > < td class = "benchmarkresult" > 163< / td > < td class = "benchmarkresult" > 309< / td > < td class = "benchmarkresult" > 377< / td > < td class = "benchmarkresult" > 340< / 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:[168,167,320,356,439]},
{name:'Short replace symbols with std::string find_first_of + replace',data:[320,326,382,448,654]},
{name:'Short replace symbols with std::string_view find_first_of + copy',data:[164,170,330,366,511]},
{name:'Short replace runtime symbols with string expressions and without remembering all search results',data:[184,199,257,320,388]},
{name:'Short replace runtime symbols with simstr and memorization of all search results',data:[194,226,355,416,451]},
{name:'Short replace const symbols with string expressions and without remembering all search results',data:[133,164,222,260,268]},
{name:'Short replace const symbols with string expressions and memorization of all search results',data:[148,163,309,377,340]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1741" > 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" > 161< / td > < td class = "benchmarkresult" > 162< / td > < td class = "benchmarkresult" > 231< / td > < td class = "benchmarkresult" > 253< / td > < td class = "benchmarkresult" > 414< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1741" > 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" > 545< / td > < td class = "benchmarkresult" > 522< / td > < td class = "benchmarkresult" > 790< / td > < td class = "benchmarkresult" > 807< / td > < td class = "benchmarkresult" > 1247< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1741" > 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" > 1067< / td > < td class = "benchmarkresult" > 989< / td > < td class = "benchmarkresult" > 1467< / td > < td class = "benchmarkresult" > 1560< / td > < td class = "benchmarkresult" > 2343< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1741" > 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" > 2581< / td > < td class = "benchmarkresult" > 2326< / td > < td class = "benchmarkresult" > 3177< / td > < td class = "benchmarkresult" > 3234< / td > < td class = "benchmarkresult" > 4971< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1741" > replace bb to ---- in std::string|2048< / 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" > 6211< / td > < td class = "benchmarkresult" > 5856< / td > < td class = "benchmarkresult" > 8072< / td > < td class = "benchmarkresult" > 8346< / td > < td class = "benchmarkresult" > 11336< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1775" > replace bb to ---- in lstringa< 8>|64< / 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" > 139< / td > < td class = "benchmarkresult" > 148< / td > < td class = "benchmarkresult" > 241< / td > < td class = "benchmarkresult" > 235< / td > < td class = "benchmarkresult" > 307< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1775" > replace bb to ---- in lstringa< 8>|256< / 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" > 429< / td > < td class = "benchmarkresult" > 477< / td > < td class = "benchmarkresult" > 641< / td > < td class = "benchmarkresult" > 673< / td > < td class = "benchmarkresult" > 945< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1775" > replace bb to ---- in lstringa< 8>|512< / 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" > 814< / td > < td class = "benchmarkresult" > 911< / td > < td class = "benchmarkresult" > 1060< / td > < td class = "benchmarkresult" > 1150< / td > < td class = "benchmarkresult" > 1772< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1775" > 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" > 1687< / td > < td class = "benchmarkresult" > 1886< / td > < td class = "benchmarkresult" > 1917< / td > < td class = "benchmarkresult" > 2082< / td > < td class = "benchmarkresult" > 3390< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1775" > 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" > 3197< / td > < td class = "benchmarkresult" > 3484< / td > < td class = "benchmarkresult" > 3571< / td > < td class = "benchmarkresult" > 4062< / td > < td class = "benchmarkresult" > 6782< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1798" > 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" > 97.9< / td > < td class = "benchmarkresult" > 101< / td > < td class = "benchmarkresult" > 175< / td > < td class = "benchmarkresult" > 209< / td > < td class = "benchmarkresult" > 209< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1798" > 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" > 307< / td > < td class = "benchmarkresult" > 348< / td > < td class = "benchmarkresult" > 382< / td > < td class = "benchmarkresult" > 475< / td > < td class = "benchmarkresult" > 613< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1798" > 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" > 753< / td > < td class = "benchmarkresult" > 781< / td > < td class = "benchmarkresult" > 830< / td > < td class = "benchmarkresult" > 1069< / td > < td class = "benchmarkresult" > 1421< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1798" > 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" > 1562< / td > < td class = "benchmarkresult" > 1664< / td > < td class = "benchmarkresult" > 1705< / td > < td class = "benchmarkresult" > 2250< / td > < td class = "benchmarkresult" > 2946< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1798" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3081< / td > < td class = "benchmarkresult" > 3334< / td > < td class = "benchmarkresult" > 3170< / td > < td class = "benchmarkresult" > 4602< / td > < td class = "benchmarkresult" > 6119< / 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 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:[161,162,231,253,414]},
{name:'replace bb to ---- in std::string|256',data:[545,522,790,807,1247]},
{name:'replace bb to ---- in std::string|512',data:[1067,989,1467,1560,2343]},
{name:'replace bb to ---- in std::string|1024',data:[2581,2326,3177,3234,4971]},
{name:'replace bb to ---- in std::string|2048',data:[6211,5856,8072,8346,11336]},
{name:'replace bb to ---- in lstringa< 8 > |64',data:[139,148,241,235,307]},
{name:'replace bb to ---- in lstringa< 8 > |256',data:[429,477,641,673,945]},
{name:'replace bb to ---- in lstringa< 8 > |512',data:[814,911,1060,1150,1772]},
{name:'replace bb to ---- in lstringa< 8 > |1024',data:[1687,1886,1917,2082,3390]},
{name:'replace bb to ---- in lstringa< 8 > |2048',data:[3197,3484,3571,4062,6782]},
{name:'replace bb to ---- by init stringa|64',data:[97.9,101,175,209,209]},
{name:'replace bb to ---- by init stringa|256',data:[307,348,382,475,613]},
{name:'replace bb to ---- by init stringa|512',data:[753,781,830,1069,1421]},
{name:'replace bb to ---- by init stringa|1024',data:[1562,1664,1705,2250,2946]},
{name:'replace bb to ---- by init stringa|2048',data:[3081,3334,3170,4602,6119]}
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]}< / script >
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< div class = "benchset" id = "bs28" > < h4 > < a id = "bs74494088982050398630" href = "#bs74494088982050398630" > #< / a > Replace All Str To Same 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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1820" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 123< / td > < td class = "benchmarkresult" > 121< / td > < td class = "benchmarkresult" > 195< / td > < td class = "benchmarkresult" > 207< / td > < td class = "benchmarkresult" > 287< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1820" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 418< / td > < td class = "benchmarkresult" > 401< / td > < td class = "benchmarkresult" > 502< / td > < td class = "benchmarkresult" > 543< / td > < td class = "benchmarkresult" > 909< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1820" > replace bb to -- in std::string|512< / 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 747< / td > < td class = "benchmarkresult" > 712< / td > < td class = "benchmarkresult" > 1022< / td > < td class = "benchmarkresult" > 976< / td > < td class = "benchmarkresult" > 1631< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1820" > replace bb to -- in std::string|1024< / 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1473< / td > < td class = "benchmarkresult" > 1360< / td > < td class = "benchmarkresult" > 1730< / td > < td class = "benchmarkresult" > 1851< / td > < td class = "benchmarkresult" > 3086< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1820" > replace bb to -- in std::string|2048< / 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2945< / td > < td class = "benchmarkresult" > 2878< / td > < td class = "benchmarkresult" > 3149< / td > < td class = "benchmarkresult" > 3605< / td > < td class = "benchmarkresult" > 6778< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1853" > replace bb to -- in lstringa< 8>|64< / 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" > 98.7< / td > < td class = "benchmarkresult" > 101< / td > < td class = "benchmarkresult" > 185< / td > < td class = "benchmarkresult" > 196< / td > < td class = "benchmarkresult" > 222< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1853" > 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" > 296< / td > < td class = "benchmarkresult" > 305< / td > < td class = "benchmarkresult" > 454< / td > < td class = "benchmarkresult" > 462< / td > < td class = "benchmarkresult" > 670< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1853" > 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" > 544< / td > < td class = "benchmarkresult" > 535< / td > < td class = "benchmarkresult" > 783< / td > < td class = "benchmarkresult" > 804< / td > < td class = "benchmarkresult" > 1251< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1853" > 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" > 1135< / td > < td class = "benchmarkresult" > 1082< / td > < td class = "benchmarkresult" > 1485< / td > < td class = "benchmarkresult" > 1499< / td > < td class = "benchmarkresult" > 2408< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1853" > 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" > 2152< / td > < td class = "benchmarkresult" > 2085< / td > < td class = "benchmarkresult" > 2845< / td > < td class = "benchmarkresult" > 2950< / td > < td class = "benchmarkresult" > 4767< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1875" > 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" > 83.2< / td > < td class = "benchmarkresult" > 95.3< / td > < td class = "benchmarkresult" > 162< / td > < td class = "benchmarkresult" > 180< / td > < td class = "benchmarkresult" > 172< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1875" > 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" > 240< / td > < td class = "benchmarkresult" > 273< / td > < td class = "benchmarkresult" > 362< / td > < td class = "benchmarkresult" > 403< / td > < td class = "benchmarkresult" > 508< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1875" > 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" > 437< / td > < td class = "benchmarkresult" > 508< / td > < td class = "benchmarkresult" > 605< / td > < td class = "benchmarkresult" > 669< / td > < td class = "benchmarkresult" > 849< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1875" > 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" > 904< / td > < td class = "benchmarkresult" > 1043< / td > < td class = "benchmarkresult" > 1070< / td > < td class = "benchmarkresult" > 1178< / td > < td class = "benchmarkresult" > 1687< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1875" > 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" > 1717< / td > < td class = "benchmarkresult" > 2005< / td > < td class = "benchmarkresult" > 2042< / td > < td class = "benchmarkresult" > 2321< / td > < td class = "benchmarkresult" > 3367< / 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:[123,121,195,207,287]},
{name:'replace bb to -- in std::string|256',data:[418,401,502,543,909]},
{name:'replace bb to -- in std::string|512',data:[747,712,1022,976,1631]},
{name:'replace bb to -- in std::string|1024',data:[1473,1360,1730,1851,3086]},
{name:'replace bb to -- in std::string|2048',data:[2945,2878,3149,3605,6778]},
{name:'replace bb to -- in lstringa< 8 > |64',data:[98.7,101,185,196,222]},
{name:'replace bb to -- in lstringa< 8 > |256',data:[296,305,454,462,670]},
{name:'replace bb to -- in lstringa< 8 > |512',data:[544,535,783,804,1251]},
{name:'replace bb to -- in lstringa< 8 > |1024',data:[1135,1082,1485,1499,2408]},
{name:'replace bb to -- in lstringa< 8 > |2048',data:[2152,2085,2845,2950,4767]},
{name:'replace bb to -- by init stringa|64',data:[83.2,95.3,162,180,172]},
{name:'replace bb to -- by init stringa|256',data:[240,273,362,403,508]},
{name:'replace bb to -- by init stringa|512',data:[437,508,605,669,849]},
{name:'replace bb to -- by init stringa|1024',data:[904,1043,1070,1178,1687]},
{name:'replace bb to -- by init stringa|2048',data:[1717,2005,2042,2321,3367]}
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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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1972" > 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
2026-02-08 11:17:03 +00:00
hashStrMapA, and then search for them in it.< / span > < / span > < / td > < td class = "benchmarkresult" > 3702256< / td > < td class = "benchmarkresult" > 3755052< / td > < td class = "benchmarkresult" > 3994959< / td > < td class = "benchmarkresult" > 4457224< / td > < td class = "benchmarkresult" > 3337923< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L1996" > 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);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Т о
2026-02-08 11:17:03 +00:00
Same thing with std::string and std::unordered_map< / span > < / span > < / td > < td class = "benchmarkresult" > 3940489< / td > < td class = "benchmarkresult" > 3698410< / td > < td class = "benchmarkresult" > 5594557< / td > < td class = "benchmarkresult" > 5651637< / td > < td class = "benchmarkresult" > 3713478< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L2020" > hashStrMapA< size_t> emplace & find ssa;< / a > < span class = "tooltiptext code" > void HashMapSimSsa(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
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);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Теперь вставляем stringa, а
2026-02-08 11:17:03 +00:00
Now we insert stringa and search for ssa< / span > < / span > < / td > < td class = "benchmarkresult" > 3670874< / td > < td class = "benchmarkresult" > 3981007< / td > < td class = "benchmarkresult" > 3503253< / td > < td class = "benchmarkresult" > 4092228< / td > < td class = "benchmarkresult" > 3277536< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L2045" > std::unordered_map< std::string, size_t> emplace & find std::string_view;< / a > < span class = "tooltiptext code" > void HashMapStdStrView(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.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
2026-02-08 11:17:03 +00:00
We insert std::string and look for std::string_view< / span > < / span > < / td > < td class = "benchmarkresult" > 4098357< / td > < td class = "benchmarkresult" > 4270911< / td > < td class = "benchmarkresult" > 6252759< / td > < td class = "benchmarkresult" > 6487851< / td > < td class = "benchmarkresult" > 4219440< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / 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 : [
2026-02-08 11:17:03 +00:00
{name:'hashStrMapA< size_t > emplace & find stringa;',data:[3702256,3755052,3994959,4457224,3337923]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string;',data:[3940489,3698410,5594557,5651637,3713478]},
{name:'hashStrMapA< size_t > emplace & find ssa;',data:[3670874,3981007,3503253,4092228,3277536]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string_view;',data:[4098357,4270911,6252759,6487851,4219440]}
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]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs30" > < h4 > < a id = "bs131384792586914680410" href = "#bs131384792586914680410" > #< / a > Build Full Func Name< / 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 >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L2255" > 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" > 731< / td > < td class = "benchmarkresult" > 972< / td > < td class = "benchmarkresult" > 1567< / td > < td class = "benchmarkresult" > 1728< / td > < td class = "benchmarkresult" > 3514< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L2287" > 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" > 819< / td > < td class = "benchmarkresult" > 1049< / td > < td class = "benchmarkresult" > 1586< / td > < td class = "benchmarkresult" > 1741< / td > < td class = "benchmarkresult" > 3573< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L2317" > 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();
2026-01-21 11:59:17 +00:00
}< / 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" > 2638< / td > < td class = "benchmarkresult" > 2610< / td > < td class = "benchmarkresult" > 8328< / td > < td class = "benchmarkresult" > 10062< / td > < td class = "benchmarkresult" > 12140< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L2228" > 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" > 526< / td > < td class = "benchmarkresult" > 482< / td > < td class = "benchmarkresult" > 825< / td > < td class = "benchmarkresult" > 909< / td > < td class = "benchmarkresult" > 1750< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.5/bench/bench_str.cpp#L2243" > 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
2026-01-21 11:59:17 +00:00
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
2026-02-08 11:17:03 +00:00
to be written in a single string, but is slightly slower in execution time.< / span > < / span > < / td > < td class = "benchmarkresult" > 667< / td > < td class = "benchmarkresult" > 688< / td > < td class = "benchmarkresult" > 935< / td > < td class = "benchmarkresult" > 1039< / td > < td class = "benchmarkresult" > 2047< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / 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:[731,972,1567,1728,3514]},
{name:'Build func full name std::string 1;',data:[819,1049,1586,1741,3573]},
{name:'Build func full name std::stream;',data:[2638,2610,8328,10062,12140]},
{name:'Build func full name stringa;',data:[526,482,825,909,1750]},
{name:'Build func full name stringa 1;',data:[667,688,935,1039,2047]}
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]}< / script > < / body > < / html >
