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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: 0.53, 0.18, 0.32
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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 Firefox, Clang-21< / span > < span class = "tooltip" > 32 X 2513.96 MHz CPU s< span class = "tooltiptext" > Firefox: 146.0.1.60 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 Firefox, Clang-21' ] ; < / script >
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< div class = "benchset" id = "bs1" > < h4 > < a id = "bs70109915512075798510" href = "#bs70109915512075798510" > #< / a > Concatenate string + Number + " Literal" < / 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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L23" > 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" > 226< / td > < td class = "benchmarkresult" > 201< / td > < td class = "benchmarkresult" > 264< / td > < td class = "benchmarkresult" > 351< / td > < td class = "benchmarkresult" > 891< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L34" > 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" > 105< / td > < td class = "benchmarkresult" > 100< / td > < td class = "benchmarkresult" > 148< / td > < td class = "benchmarkresult" > 220< / td > < td class = "benchmarkresult" > 402< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L45" > Concat stringa and number by StrExpr to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSim(benchmark::State& state) {
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stra s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
stringa str = s1 + i + " end" ;
benchmark::DoNotOptimize(str);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringa в отличии от std::string,
вмещает в SSO 23 символа вместо 15, поэтому
в конце теста std::string приходится аллоцировать память,
а
Unlike std::string, stringa
holds 23 characters in SSO instead of 15, so
at the end of the std::string test, memory has to be allocated,
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while in stringa , the entire test is included in SSO.< / span > < / span > < / td > < td class = "benchmarkresult" > 62.8< / td > < td class = "benchmarkresult" > 77.9< / td > < td class = "benchmarkresult" > 68.5< / td > < td class = "benchmarkresult" > 116< / td > < td class = "benchmarkresult" > 230< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L56" > 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" > 70.6< / td > < td class = "benchmarkresult" > 79.0< / td > < td class = "benchmarkresult" > 75.6< / td > < td class = "benchmarkresult" > 110< / td > < td class = "benchmarkresult" > 196< / 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:[226,201,264,351,891]},
{name:'Concat std::string and number by StrExpr to std::string',data:[105,100,148,220,402]},
{name:'Concat stringa and number by StrExpr to simstr::stringa',data:[62.8,77.9,68.5,116,230]},
{name:'Concat stringa and number by e_concat to simstr::stringa',data:[70.6,79.0,75.6,110,196]}
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]}< / script >
< div class = "benchset" id = "bs2" > < h4 > < a id = "bs146911715078927772520" href = "#bs146911715078927772520" > #< / a > Concatenate string + Hex Number + " Literal" < / 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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L73" > 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" > 681< / td > < td class = "benchmarkresult" > 691< / td > < td class = "benchmarkresult" > 714< / td > < td class = "benchmarkresult" > 1042< / td > < td class = "benchmarkresult" > 1301< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L86" > 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" > 863< / td > < td class = "benchmarkresult" > 995< / td > < td class = "benchmarkresult" > 1483< / td > < td class = "benchmarkresult" > 1850< / td > < td class = "benchmarkresult" > 1590< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L98" > 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" > 199< / td > < td class = "benchmarkresult" > 175< / td > < td class = "benchmarkresult" > 191< / td > < td class = "benchmarkresult" > 254< / td > < td class = "benchmarkresult" > 611< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L114" > 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 + e_hex< HexFlags::Short>(i) + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 126< / td > < td class = "benchmarkresult" > 78.8< / td > < td class = "benchmarkresult" > 116< / td > < td class = "benchmarkresult" > 419< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L127" > 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 + e_hex< HexFlags::Short>(i) + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 122< / td > < td class = "benchmarkresult" > 119< / td > < td class = "benchmarkresult" > 74.3< / td > < td class = "benchmarkresult" > 101< / td > < td class = "benchmarkresult" > 220< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L140" > Concat stringa and hex number and literal by e_concat to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHexC(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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// Can work for all types of symbols
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stringa str = e_concat(" " , s1, e_hex< HexFlags::Short>(i), " end" );
benchmark::DoNotOptimize(str);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 129< / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 81.0< / td > < td class = "benchmarkresult" > 106< / td > < td class = "benchmarkresult" > 214< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L153" > 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);
2026-02-03 07:38:21 +00:00
stringa str = e_subst(" {}{} end" , s1, e_hex< HexFlags::Short>(i));
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benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 180< / td > < td class = "benchmarkresult" > 164< / td > < td class = "benchmarkresult" > 149< / td > < td class = "benchmarkresult" > 174< / td > < td class = "benchmarkresult" > 463< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L165" > 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);
stringa str = e_vsubst(" {}{} end" _ss, s1, e_hex< HexFlags::Short>(i));
benchmark::DoNotOptimize(str);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 312< / td > < td class = "benchmarkresult" > 277< / td > < td class = "benchmarkresult" > 305< / td > < td class = "benchmarkresult" > 349< / td > < td class = "benchmarkresult" > 770< / td > < / tr >
2026-01-21 11:59:17 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + H e x N u m b e r + " L i t e r a l " ' ] = { i d : ' b s 2 ' , t e s t s : [
2026-02-04 14:25:40 +00:00
{name:'Concat std::string and format hex number and literal to std::string',data:[681,691,714,1042,1301]},
{name:'std::format std::string and hex number by literal to std::string',data:[863,995,1483,1850,1590]},
{name:'Concat std::string and std::to_chars and string to std::string',data:[199,175,191,254,611]},
{name:'Concat std::string and hex number and literal by StrExpr to std::string',data:[133,126,78.8,116,419]},
{name:'Concat stringa and hex number and literal by StrExpr to simstr::stringa',data:[122,119,74.3,101,220]},
{name:'Concat stringa and hex number and literal by e_concat to simstr::stringa',data:[129,131,81.0,106,214]},
{name:'Subst stringa and hex number by e_subst literal to simstr::stringa',data:[180,164,149,174,463]},
{name:'Subst stringa and hex number by e_vsubst stra to simstr::stringa',data:[312,277,305,349,770]}
2026-01-21 11:59:17 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs3" > < h4 > < a id = "bs147607714415450897940" href = "#bs147607714415450897940" > #< / a > format/vformat and subst/vsubst octal number< / 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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L187" > " art " _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) {
2026-02-04 14:25:40 +00:00
stringa str = " art " _ss + i / 0x8a010_fmt + " end" ;
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benchmark::DoNotOptimize(str);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 99.1< / td > < td class = "benchmarkresult" > 96.6< / td > < td class = "benchmarkresult" > 108< / td > < td class = "benchmarkresult" > 125< / td > < td class = "benchmarkresult" > 497< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L196" > e_subst(" art {} 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(" art {} end" , i / 0x8a010_fmt);
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benchmark::DoNotOptimize(str);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 159< / td > < td class = "benchmarkresult" > 145< / td > < td class = "benchmarkresult" > 188< / td > < td class = "benchmarkresult" > 206< / td > < td class = "benchmarkresult" > 682< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L214" > e_vsubst(pattern, i / 0x8a010_fmt)< / a > < span class = "tooltiptext code" > void VSubstSimToSimOct(benchmark::State& state) {
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ssa pattern = " art {} end" ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
2026-02-04 14:25:40 +00:00
stringa str = e_vsubst(pattern, i / 0x8a010_fmt);
benchmark::DoNotOptimize(str);
}
}
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 347< / td > < td class = "benchmarkresult" > 327< / td > < td class = "benchmarkresult" > 315< / td > < td class = "benchmarkresult" > 375< / td > < td class = "benchmarkresult" > 999< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L205" > std::format(" art {:#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(" art {:#010o} end" , i);
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benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 988< / td > < td class = "benchmarkresult" > 1204< / td > < td class = "benchmarkresult" > 1364< / td > < td class = "benchmarkresult" > 1823< / td > < td class = "benchmarkresult" > 1770< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L224" > std::vformat(pattern, std::make_format_args(i))< / a > < span class = "tooltiptext code" > void VFormatStdToStdOct(benchmark::State& state) {
2026-02-03 07:38:21 +00:00
std::string_view pattern = " art {:#010o} end" ;
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);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1046< / td > < td class = "benchmarkresult" > 1091< / td > < td class = "benchmarkresult" > 1391< / td > < td class = "benchmarkresult" > 1745< / td > < td class = "benchmarkresult" > 1790< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L234" > strm < < " art 0" < < std::oct < < std::setw(9) < < std::setfill(' 0' ) < < i < < " end" < / a > < span class = "tooltiptext code" > void StreamStdToStdOct(benchmark::State& state) {
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::stringstream strm;
strm < < " art 0" < < std::oct < < std::setw(9) < < std::setfill(' 0' ) < < i < < " end" ;
std::string str = strm.str();
benchmark::DoNotOptimize(str);
}
}
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2020< / td > < td class = "benchmarkresult" > 2084< / td > < td class = "benchmarkresult" > 6488< / td > < td class = "benchmarkresult" > 6869< / td > < td class = "benchmarkresult" > 4124< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' f o r m a t / v f o r m a t a n d s u b s t / v s u b s t o c t a l n u m b e r ' ] = { i d : ' b s 3 ' , t e s t s : [
2026-02-04 14:25:40 +00:00
{name:'"art "_ss + i / 0x8a010_fmt + " end"',data:[99.1,96.6,108,125,497]},
{name:'e_subst("art {} end", i / 0x8a010_fmt)',data:[159,145,188,206,682]},
{name:'e_vsubst(pattern, i / 0x8a010_fmt)',data:[347,327,315,375,999]},
{name:'std::format("art {:#010o} end", i)',data:[988,1204,1364,1823,1770]},
{name:'std::vformat(pattern, std::make_format_args(i))',data:[1046,1091,1391,1745,1790]},
{name:'strm < < "art 0" < < std::oct < < std::setw ( 9 ) < < std::setfill ( \ ' 0 \ ' ) < < i < < " end " ' , data: [ 2020 , 2084 , 6488 , 6869 , 4124 ] }
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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L253" > 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);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 45.4< / td > < td class = "benchmarkresult" > 43.5< / td > < td class = "benchmarkresult" > 41.1< / td > < td class = "benchmarkresult" > 58.5< / td > < td class = "benchmarkresult" > 102< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L264" > 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);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 33.7< / td > < td class = "benchmarkresult" > 29.4< / td > < td class = "benchmarkresult" > 38.6< / td > < td class = "benchmarkresult" > 79.7< / td > < td class = "benchmarkresult" > 119< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L275" > 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);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 28.7< / td > < td class = "benchmarkresult" > 33.0< / td > < td class = "benchmarkresult" > 29.2< / td > < td class = "benchmarkresult" > 51.1< / td > < td class = "benchmarkresult" > 93.6< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + " L i t e r a l " ' ] = { i d : ' b s 4 ' , t e s t s : [
2026-02-04 14:25:40 +00:00
{name:'Concat std::string by std to std::string',data:[45.4,43.5,41.1,58.5,102]},
{name:'Concat std::string by StrExpr to std::string',data:[33.7,29.4,38.6,79.7,119]},
{name:'Concat stringa by StrExpr to stringa',data:[28.7,33.0,29.2,51.1,93.6]}
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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L291" > 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" );
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 121< / td > < td class = "benchmarkresult" > 194< / td > < td class = "benchmarkresult" > 205< / td > < td class = "benchmarkresult" > 232< / td > < td class = "benchmarkresult" > 157< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L296" > Find concat three strexpr< / a > < span class = "tooltiptext code" > size_t find_pos_exp(ssa src, ssa name) {
2026-01-21 11:59:17 +00:00
return src.find(std::string{" \n- " + name + " -\n" });
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 50.8< / td > < td class = "benchmarkresult" > 69.7< / td > < td class = "benchmarkresult" > 120< / td > < td class = "benchmarkresult" > 130< / td > < td class = "benchmarkresult" > 102< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L300" > Find concat three simstr< / a > < span class = "tooltiptext code" > size_t find_pos_sim(ssa src, ssa name) {
2026-01-21 11:59:17 +00:00
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,
2026-02-04 14:25:40 +00:00
it is collected in a stack-based buffer, without allocation or deallocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 51.6< / td > < td class = "benchmarkresult" > 44.2< / td > < td class = "benchmarkresult" > 29.1< / td > < td class = "benchmarkresult" > 27.9< / td > < td class = "benchmarkresult" > 72.5< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / 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 : [
2026-02-04 14:25:40 +00:00
{name:'Find concat three std::string',data:[121,194,205,232,157]},
{name:'Find concat three strexpr',data:[50.8,69.7,120,130,102]},
{name:'Find concat three simstr',data:[51.6,44.2,29.1,27.9,72.5]}
2026-01-21 11:59:17 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< 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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L360" > 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" > 7.08< / td > < td class = "benchmarkresult" > 10.3< / td > < td class = "benchmarkresult" > 8.48< / td > < td class = "benchmarkresult" > 18.8< / td > < td class = "benchmarkresult" > 17.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L372" > 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" > 6.67< / td > < td class = "benchmarkresult" > 6.71< / td > < td class = "benchmarkresult" > 7.67< / td > < td class = "benchmarkresult" > 12.8< / 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/main/bench/bench_str.cpp#L379" > 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" > 5.11< / td > < td class = "benchmarkresult" > 5.47< / td > < td class = "benchmarkresult" > 7.67< / td > < td class = "benchmarkresult" > 16.7< / td > < td class = "benchmarkresult" > 16.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L360" > 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" > 63.1< / td > < td class = "benchmarkresult" > 83.0< / td > < td class = "benchmarkresult" > 60.0< / td > < td class = "benchmarkresult" > 84.4< / td > < td class = "benchmarkresult" > 283< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L372" > 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" > 31.0< / td > < td class = "benchmarkresult" > 24.5< / td > < td class = "benchmarkresult" > 32.4< / td > < td class = "benchmarkresult" > 40.2< / td > < td class = "benchmarkresult" > 98.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L379" > BuildTypeNameSim 10/10< / a > < span class = "tooltiptext code" > stringa buildTypeNameSim(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 22.7< / td > < td class = "benchmarkresult" > 25.3< / td > < td class = "benchmarkresult" > 24.9< / td > < td class = "benchmarkresult" > 38.0< / td > < td class = "benchmarkresult" > 74.6< / 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:[7.08,10.3,8.48,18.8,17.5]},
{name:'BuildTypeNameExp 0/0',data:[6.67,6.71,7.67,12.8,16.4]},
{name:'BuildTypeNameSim 0/0',data:[5.11,5.47,7.67,16.7,16.5]},
{name:'BuildTypeNameStr 10/10',data:[63.1,83.0,60.0,84.4,283]},
{name:'BuildTypeNameExp 10/10',data:[31.0,24.5,32.4,40.2,98.2]},
{name:'BuildTypeNameSim 10/10',data:[22.7,25.3,24.9,38.0,74.6]}
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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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L433" > 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" > 211< / td > < td class = "benchmarkresult" > 403< / td > < td class = "benchmarkresult" > 314< / td > < td class = "benchmarkresult" > 341< / td > < td class = "benchmarkresult" > 436< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L451" > 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" > 163< / td > < td class = "benchmarkresult" > 175< / td > < td class = "benchmarkresult" > 213< / td > < td class = "benchmarkresult" > 225< / td > < td class = "benchmarkresult" > 259< / 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:[211,403,314,341,436]},
{name:'Concat with replace exp',data:[163,175,213,225,259]}
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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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L485" > 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" > 1.13< / td > < td class = "benchmarkresult" > 1.10< / td > < td class = "benchmarkresult" > 1.12< / td > < td class = "benchmarkresult" > 2.53< / td > < td class = "benchmarkresult" > 2.15< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L485" > 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" > 0.369< / td > < td class = "benchmarkresult" > 0.748< / td > < td class = "benchmarkresult" > 0.378< / td > < td class = "benchmarkresult" > 1.83< / td > < td class = "benchmarkresult" > 1.03< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L485" > 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" > 0.363< / td > < td class = "benchmarkresult" > 0.180< / td > < td class = "benchmarkresult" > 0.377< / td > < td class = "benchmarkresult" > 1.90< / td > < td class = "benchmarkresult" > 0.941< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L485" > 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" > 0.758< / td > < td class = "benchmarkresult" > 0.744< / td > < td class = "benchmarkresult" > 0.734< / td > < td class = "benchmarkresult" > 2.36< / td > < td class = "benchmarkresult" > 2.15< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L485" > 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" > 1.13< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 2.59< / td > < td class = "benchmarkresult" > 2.25< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L485" > 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" > 1.13< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.07< / td > < td class = "benchmarkresult" > 2.56< / td > < td class = "benchmarkresult" > 2.51< / 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 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:[1.13,1.10,1.12,2.53,2.15]},
{name:'std::string_view e;',data:[0.369,0.748,0.378,1.83,1.03]},
{name:'ssa e;',data:[0.363,0.180,0.377,1.90,0.941]},
{name:'stringa e;',data:[0.758,0.744,0.734,2.36,2.15]},
{name:'lstringa< 20 > e;',data:[1.13,1.11,1.09,2.59,2.25]},
{name:'lstringa< 40 > e;',data:[1.13,1.11,1.07,2.56,2.51]}
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]}< / script >
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< 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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L500" > 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" > 1.83< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 1.80< / td > < td class = "benchmarkresult" > 2.59< / td > < td class = "benchmarkresult" > 2.32< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L500" > 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" > 0.735< / td > < td class = "benchmarkresult" > 0.750< / td > < td class = "benchmarkresult" > 0.723< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 1.23< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L500" > 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" > 0.392< / td > < td class = "benchmarkresult" > 0.732< / td > < td class = "benchmarkresult" > 0.364< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 0.982< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L500" > 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
2026-01-21 11:59:17 +00:00
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" > 1.21< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 3.00< / td > < td class = "benchmarkresult" > 2.25< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L500" > 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" > 2.03< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 1.80< / td > < td class = "benchmarkresult" > 2.53< / td > < td class = "benchmarkresult" > 2.73< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L500" > 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" > 1.84< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 2.56< / td > < td class = "benchmarkresult" > 2.65< / 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:[1.83,1.84,1.80,2.59,2.32]},
{name:'std::string_view e = "Test text";',data:[0.735,0.750,0.723,1.82,1.23]},
{name:'ssa e = "Test text";',data:[0.392,0.732,0.364,1.82,0.982]},
{name:'stringa e = "Test text";',data:[1.21,1.11,1.09,3.00,2.25]},
{name:'lstringa< 20 > e = "Test text";',data:[2.03,1.82,1.80,2.53,2.73]},
{name:'lstringa< 40 > e = "Test text";',data:[1.84,1.84,1.82,2.56,2.65]}
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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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L515" > 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" > 18.9< / td > < td class = "benchmarkresult" > 18.7< / td > < td class = "benchmarkresult" > 71.3< / td > < td class = "benchmarkresult" > 79.5< / td > < td class = "benchmarkresult" > 15.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L515" > 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" > 0.733< / td > < td class = "benchmarkresult" > 0.745< / td > < td class = "benchmarkresult" > 0.722< / td > < td class = "benchmarkresult" > 1.83< / td > < td class = "benchmarkresult" > 1.26< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L515" > 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" > 0.368< / td > < td class = "benchmarkresult" > 0.782< / td > < td class = "benchmarkresult" > 0.373< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 0.971< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L515" > 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" > 1.10< / td > < td class = "benchmarkresult" > 1.14< / td > < td class = "benchmarkresult" > 1.10< / td > < td class = "benchmarkresult" > 2.20< / td > < td class = "benchmarkresult" > 2.23< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L515" > 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" > 20.2< / td > < td class = "benchmarkresult" > 20.0< / td > < td class = "benchmarkresult" > 71.0< / td > < td class = "benchmarkresult" > 81.8< / td > < td class = "benchmarkresult" > 16.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L515" > lstringa< 40> e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А < 40 > влезает до 47 символов, так что просто
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копируется 30 байтов.
And lstringa< 40 > can hold up to 47 characters, so 30
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bytes are simply copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 2.56< / td > < td class = "benchmarkresult" > 1.92< / td > < td class = "benchmarkresult" > 2.51< / td > < td class = "benchmarkresult" > 3.35< / td > < td class = "benchmarkresult" > 3.16< / 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:[18.9,18.7,71.3,79.5,15.9]},
{name:'std::string_view e = "123456789012345678901234567890";',data:[0.733,0.745,0.722,1.83,1.26]},
{name:'ssa e = "123456789012345678901234567890";',data:[0.368,0.782,0.373,1.82,0.971]},
{name:'stringa e = "123456789012345678901234567890";',data:[1.10,1.14,1.10,2.20,2.23]},
{name:'lstringa< 20 > e = "123456789012345678901234567890";',data:[20.2,20.0,71.0,81.8,16.5]},
{name:'lstringa< 40 > e = "123456789012345678901234567890";',data:[2.56,1.92,2.51,3.35,3.16]}
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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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L530" > 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" > 5.38< / td > < td class = "benchmarkresult" > 4.89< / td > < td class = "benchmarkresult" > 2.01< / td > < td class = "benchmarkresult" > 5.06< / td > < td class = "benchmarkresult" > 2.24< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L530" > 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" > 0.375< / td > < td class = "benchmarkresult" > 0.379< / td > < td class = "benchmarkresult" > 0.383< / td > < td class = "benchmarkresult" > 3.80< / td > < td class = "benchmarkresult" > 1.24< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L530" > 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" > 0.364< / td > < td class = "benchmarkresult" > 0.368< / td > < td class = "benchmarkresult" > 0.373< / td > < td class = "benchmarkresult" > 3.79< / td > < td class = "benchmarkresult" > 1.23< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L530" > 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" > 1.09< / td > < td class = "benchmarkresult" > 1.32< / td > < td class = "benchmarkresult" > 1.34< / td > < td class = "benchmarkresult" > 4.17< / td > < td class = "benchmarkresult" > 2.61< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L530" > 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" > 4.57< / td > < td class = "benchmarkresult" > 4.43< / td > < td class = "benchmarkresult" > 5.05< / td > < td class = "benchmarkresult" > 8.29< / td > < td class = "benchmarkresult" > 16.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L530" > 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" > 4.52< / td > < td class = "benchmarkresult" > 4.57< / td > < td class = "benchmarkresult" > 5.12< / td > < td class = "benchmarkresult" > 8.09< / td > < td class = "benchmarkresult" > 14.7< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e c o p y o f S t r w i t h 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:[5.38,4.89,2.01,5.06,2.24]},
{name:'std::string_view e = "Test text"; auto c{e};',data:[0.375,0.379,0.383,3.80,1.24]},
{name:'ssa e = "Test text"; auto c{e};',data:[0.364,0.368,0.373,3.79,1.23]},
{name:'stringa e = "Test text"; auto c{e};',data:[1.09,1.32,1.34,4.17,2.61]},
{name:'lstringa< 20 > e = "Test text"; auto c{e};',data:[4.57,4.43,5.05,8.29,16.2]},
{name:'lstringa< 40 > e = "Test text"; auto c{e};',data:[4.52,4.57,5.12,8.09,14.7]}
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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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L547" > 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" > 18.8< / td > < td class = "benchmarkresult" > 23.8< / td > < td class = "benchmarkresult" > 71.5< / td > < td class = "benchmarkresult" > 80.2< / td > < td class = "benchmarkresult" > 37.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L547" > 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" > 0.731< / td > < td class = "benchmarkresult" > 0.726< / td > < td class = "benchmarkresult" > 0.719< / td > < td class = "benchmarkresult" > 1.49< / td > < td class = "benchmarkresult" > 1.23< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L547" > 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" > 0.368< / td > < td class = "benchmarkresult" > 0.734< / td > < td class = "benchmarkresult" > 0.365< / td > < td class = "benchmarkresult" > 1.47< / td > < td class = "benchmarkresult" > 0.989< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L547" > 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" > 1.15< / td > < td class = "benchmarkresult" > 1.83< / td > < td class = "benchmarkresult" > 3.40< / 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/main/bench/bench_str.cpp#L547" > 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" > 19.5< / td > < td class = "benchmarkresult" > 21.3< / td > < td class = "benchmarkresult" > 71.3< / td > < td class = "benchmarkresult" > 80.1< / td > < td class = "benchmarkresult" > 16.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L547" > 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" > 4.50< / td > < td class = "benchmarkresult" > 5.18< / td > < td class = "benchmarkresult" > 4.74< / td > < td class = "benchmarkresult" > 7.07< / td > < td class = "benchmarkresult" > 13.7< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e c o p y o f S t r w i t h 3 0 s y m b o l s ' ] = { i d : ' b s 1 2 ' , t e s t s : [
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{name:'std::string e = "123456789012345678901234567890"; auto c{e};',data:[18.8,23.8,71.5,80.2,37.7]},
{name:'std::string_view e = "123456789012345678901234567890"; auto c{e};',data:[0.731,0.726,0.719,1.49,1.23]},
{name:'ssa e = "123456789012345678901234567890"; auto c{e};',data:[0.368,0.734,0.365,1.47,0.989]},
{name:'stringa e = "123456789012345678901234567890"; auto c{e};',data:[1.12,1.15,1.83,3.40,2.19]},
{name:'lstringa< 20 > e = "123456789012345678901234567890"; auto c{e};',data:[19.5,21.3,71.3,80.1,16.2]},
{name:'lstringa< 40 > e = "123456789012345678901234567890"; auto c{e};',data:[4.50,5.18,4.74,7.07,13.7]}
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]}< / script >
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< div class = "benchset" id = "bs13" > < h4 > < a id = "bs21623892135774528620" href = "#bs21623892135774528620" > #< / a > Find 9 symbols text in end of 99 symbols text< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L564" > 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" > 7.00< / td > < td class = "benchmarkresult" > 6.65< / td > < td class = "benchmarkresult" > 39.1< / td > < td class = "benchmarkresult" > 41.5< / 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/main/bench/bench_str.cpp#L564" > 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" > 8.27< / td > < td class = "benchmarkresult" > 6.63< / td > < td class = "benchmarkresult" > 38.7< / td > < td class = "benchmarkresult" > 39.7< / td > < td class = "benchmarkresult" > 51.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L564" > 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" > 7.68< / td > < td class = "benchmarkresult" > 6.33< / td > < td class = "benchmarkresult" > 17.4< / td > < td class = "benchmarkresult" > 21.7< / td > < td class = "benchmarkresult" > 48.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L564" > 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" > 7.92< / td > < td class = "benchmarkresult" > 6.65< / td > < td class = "benchmarkresult" > 18.4< / td > < td class = "benchmarkresult" > 29.8< / td > < td class = "benchmarkresult" > 51.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L564" > lstringa< 20>::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.91< / td > < td class = "benchmarkresult" > 6.67< / td > < td class = "benchmarkresult" > 17.4< / td > < td class = "benchmarkresult" > 22.1< / td > < td class = "benchmarkresult" > 44.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L564" > 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" > 7.14< / td > < td class = "benchmarkresult" > 6.44< / td > < td class = "benchmarkresult" > 17.5< / td > < td class = "benchmarkresult" > 20.5< / td > < td class = "benchmarkresult" > 43.8< / 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:[7.00,6.65,39.1,41.5,45.9]},
{name:'std::string_view::find;',data:[8.27,6.63,38.7,39.7,51.0]},
{name:'ssa::find;',data:[7.68,6.33,17.4,21.7,48.9]},
{name:'stringa::find;',data:[7.92,6.65,18.4,29.8,51.8]},
{name:'lstringa< 20 > ::find;',data:[6.91,6.67,17.4,22.1,44.6]},
{name:'lstringa< 40 > ::find;',data:[7.14,6.44,17.5,20.5,43.8]}
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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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > std::string copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.34< / td > < td class = "benchmarkresult" > 4.83< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 4.36< / td > < td class = "benchmarkresult" > 38.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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
2026-02-04 14:25:40 +00:00
smaller, as far as I remember: 11 characters + 0.< / span > < / span > < / td > < td class = "benchmarkresult" > 24.6< / td > < td class = "benchmarkresult" > 23.7< / td > < td class = "benchmarkresult" > 76.4< / td > < td class = "benchmarkresult" > 84.6< / td > < td class = "benchmarkresult" > 36.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > std::string 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);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Дальше просто добавляется время на копирование байтов.
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Then the time for copying bytes is simply added.< / span > < / span > < / td > < td class = "benchmarkresult" > 26.2< / td > < td class = "benchmarkresult" > 26.3< / td > < td class = "benchmarkresult" > 75.4< / td > < td class = "benchmarkresult" > 83.2< / td > < td class = "benchmarkresult" > 36.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > std::string 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 28.6< / td > < td class = "benchmarkresult" > 25.2< / td > < td class = "benchmarkresult" > 75.1< / td > < td class = "benchmarkresult" > 86.1< / td > < td class = "benchmarkresult" > 37.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > std::string copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.5< / td > < td class = "benchmarkresult" > 23.0< / td > < td class = "benchmarkresult" > 81.4< / td > < td class = "benchmarkresult" > 85.4< / 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/main/bench/bench_str.cpp#L587" > std::string copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.9< / td > < td class = "benchmarkresult" > 24.4< / td > < td class = "benchmarkresult" > 81.7< / td > < td class = "benchmarkresult" > 81.6< / td > < td class = "benchmarkresult" > 44.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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" > 25.4< / td > < td class = "benchmarkresult" > 24.7< / td > < td class = "benchmarkresult" > 84.3< / td > < td class = "benchmarkresult" > 88.6< / td > < td class = "benchmarkresult" > 44.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.1< / td > < td class = "benchmarkresult" > 25.5< / td > < td class = "benchmarkresult" > 83.9< / td > < td class = "benchmarkresult" > 90.1< / td > < td class = "benchmarkresult" > 54.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > std::string copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 28.7< / td > < td class = "benchmarkresult" > 29.2< / td > < td class = "benchmarkresult" > 88.5< / td > < td class = "benchmarkresult" > 89.3< / td > < td class = "benchmarkresult" > 53.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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" > 46.9< / td > < td class = "benchmarkresult" > 45.8< / td > < td class = "benchmarkresult" > 91.4< / td > < td class = "benchmarkresult" > 95.8< / td > < td class = "benchmarkresult" > 62.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > std::string copy{str_with_len_N};/2048< / 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" > 69.5< / td > < td class = "benchmarkresult" > 71.1< / td > < td class = "benchmarkresult" > 128< / td > < td class = "benchmarkresult" > 132< / td > < td class = "benchmarkresult" > 88.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > std::string copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Чем длиннее строка, тем дольше создаётся копия.
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The longer the string, the longer it takes to create a copy.< / span > < / span > < / td > < td class = "benchmarkresult" > 118< / td > < td class = "benchmarkresult" > 121< / td > < td class = "benchmarkresult" > 178< / td > < td class = "benchmarkresult" > 180< / td > < td class = "benchmarkresult" > 154< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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" > 1.11< / td > < td class = "benchmarkresult" > 1.30< / td > < td class = "benchmarkresult" > 1.33< / td > < td class = "benchmarkresult" > 3.97< / td > < td class = "benchmarkresult" > 2.70< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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" > 1.11< / td > < td class = "benchmarkresult" > 1.29< / td > < td class = "benchmarkresult" > 1.28< / td > < td class = "benchmarkresult" > 4.09< / td > < td class = "benchmarkresult" > 5.04< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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
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copies faster than 15 in std::string.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.13< / td > < td class = "benchmarkresult" > 1.28< / td > < td class = "benchmarkresult" > 1.27< / td > < td class = "benchmarkresult" > 4.04< / 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/main/bench/bench_str.cpp#L587" > 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.
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Time is added for the atomic counter increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 18.4< / td > < td class = "benchmarkresult" > 4.82< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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" > 16.1< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 19.0< / td > < td class = "benchmarkresult" > 4.76< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > stringa 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 18.4< / 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/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 18.9< / td > < td class = "benchmarkresult" > 4.98< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 18.2< / td > < td class = "benchmarkresult" > 4.87< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 15.8< / 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/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 18.4< / 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/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 18.3< / 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/main/bench/bench_str.cpp#L587" > 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
2026-02-04 14:25:40 +00:00
increment; copying time does not depend on the string length.< / span > < / span > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 15.7< / td > < td class = "benchmarkresult" > 18.4< / td > < td class = "benchmarkresult" > 4.86< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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.
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WASM has a 32-bit architecture, so SSO is up to 19 characters.< / span > < / span > < / td > < td class = "benchmarkresult" > 4.45< / td > < td class = "benchmarkresult" > 4.43< / td > < td class = "benchmarkresult" > 5.10< / td > < td class = "benchmarkresult" > 8.05< / td > < td class = "benchmarkresult" > 14.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.60< / td > < td class = "benchmarkresult" > 4.88< / td > < td class = "benchmarkresult" > 5.71< / td > < td class = "benchmarkresult" > 8.00< / td > < td class = "benchmarkresult" > 14.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.53< / td > < td class = "benchmarkresult" > 5.22< / td > < td class = "benchmarkresult" > 5.81< / td > < td class = "benchmarkresult" > 8.62< / td > < td class = "benchmarkresult" > 29.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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.
2026-02-04 14:25:40 +00:00
And then it starts to behave like std::string when copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 24.4< / td > < td class = "benchmarkresult" > 24.4< / td > < td class = "benchmarkresult" > 84.0< / td > < td class = "benchmarkresult" > 86.2< / td > < td class = "benchmarkresult" > 32.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.5< / td > < td class = "benchmarkresult" > 24.1< / td > < td class = "benchmarkresult" > 84.7< / td > < td class = "benchmarkresult" > 85.7< / 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/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.7< / td > < td class = "benchmarkresult" > 25.4< / td > < td class = "benchmarkresult" > 81.1< / td > < td class = "benchmarkresult" > 82.9< / td > < td class = "benchmarkresult" > 37.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 26.2< / td > < td class = "benchmarkresult" > 25.6< / td > < td class = "benchmarkresult" > 85.1< / td > < td class = "benchmarkresult" > 87.2< / td > < td class = "benchmarkresult" > 38.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 27.1< / td > < td class = "benchmarkresult" > 29.7< / td > < td class = "benchmarkresult" > 85.4< / td > < td class = "benchmarkresult" > 87.6< / td > < td class = "benchmarkresult" > 51.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 32.1< / td > < td class = "benchmarkresult" > 34.0< / td > < td class = "benchmarkresult" > 88.6< / td > < td class = "benchmarkresult" > 92.1< / td > < td class = "benchmarkresult" > 47.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 54.7< / td > < td class = "benchmarkresult" > 53.7< / td > < td class = "benchmarkresult" > 92.6< / td > < td class = "benchmarkresult" > 103< / 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/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 62.1< / td > < td class = "benchmarkresult" > 66.7< / td > < td class = "benchmarkresult" > 132< / td > < td class = "benchmarkresult" > 128< / td > < td class = "benchmarkresult" > 83.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 87.4< / td > < td class = "benchmarkresult" > 88.0< / td > < td class = "benchmarkresult" > 186< / td > < td class = "benchmarkresult" > 188< / td > < td class = "benchmarkresult" > 141< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.78< / td > < td class = "benchmarkresult" > 5.14< / td > < td class = "benchmarkresult" > 5.06< / td > < td class = "benchmarkresult" > 8.52< / td > < td class = "benchmarkresult" > 14.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.84< / td > < td class = "benchmarkresult" > 5.18< / td > < td class = "benchmarkresult" > 5.16< / td > < td class = "benchmarkresult" > 8.53< / td > < td class = "benchmarkresult" > 15.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.93< / td > < td class = "benchmarkresult" > 5.43< / td > < td class = "benchmarkresult" > 5.01< / td > < td class = "benchmarkresult" > 8.48< / td > < td class = "benchmarkresult" > 14.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.79< / td > < td class = "benchmarkresult" > 5.23< / td > < td class = "benchmarkresult" > 5.10< / td > < td class = "benchmarkresult" > 8.74< / td > < td class = "benchmarkresult" > 14.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.56< / td > < td class = "benchmarkresult" > 4.77< / td > < td class = "benchmarkresult" > 8.45< / td > < td class = "benchmarkresult" > 11.9< / td > < td class = "benchmarkresult" > 17.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.35< / td > < td class = "benchmarkresult" > 6.29< / td > < td class = "benchmarkresult" > 8.13< / td > < td class = "benchmarkresult" > 11.8< / td > < td class = "benchmarkresult" > 17.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.59< / td > < td class = "benchmarkresult" > 7.26< / td > < td class = "benchmarkresult" > 9.99< / td > < td class = "benchmarkresult" > 12.3< / td > < td class = "benchmarkresult" > 17.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 17.2< / td > < td class = "benchmarkresult" > 7.80< / td > < td class = "benchmarkresult" > 9.93< / td > < td class = "benchmarkresult" > 13.0< / td > < td class = "benchmarkresult" > 19.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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
2026-02-04 14:25:40 +00:00
allocation or atomic increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 10.1< / td > < td class = "benchmarkresult" > 10.4< / td > < td class = "benchmarkresult" > 10.8< / td > < td class = "benchmarkresult" > 14.4< / td > < td class = "benchmarkresult" > 22.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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
2026-02-04 14:25:40 +00:00
And then it's like everyone else.< / span > < / span > < / td > < td class = "benchmarkresult" > 56.4< / td > < td class = "benchmarkresult" > 54.1< / td > < td class = "benchmarkresult" > 93.7< / td > < td class = "benchmarkresult" > 101< / td > < td class = "benchmarkresult" > 55.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 67.1< / td > < td class = "benchmarkresult" > 66.6< / td > < td class = "benchmarkresult" > 124< / td > < td class = "benchmarkresult" > 125< / td > < td class = "benchmarkresult" > 80.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L587" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 88.7< / td > < td class = "benchmarkresult" > 85.3< / td > < td class = "benchmarkresult" > 187< / td > < td class = "benchmarkresult" > 188< / td > < td class = "benchmarkresult" > 149< / 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 : [
2026-02-04 14:25:40 +00:00
{name:'std::string copy{str_with_len_N};/15',data:[5.34,4.83,1.84,4.36,38.2]},
{name:'std::string copy{str_with_len_N};/16',data:[24.6,23.7,76.4,84.6,36.1]},
{name:'std::string copy{str_with_len_N};/23',data:[26.2,26.3,75.4,83.2,36.6]},
{name:'std::string copy{str_with_len_N};/24',data:[28.6,25.2,75.1,86.1,37.7]},
{name:'std::string copy{str_with_len_N};/32',data:[25.5,23.0,81.4,85.4,45.9]},
{name:'std::string copy{str_with_len_N};/64',data:[23.9,24.4,81.7,81.6,44.9]},
{name:'std::string copy{str_with_len_N};/128',data:[25.4,24.7,84.3,88.6,44.1]},
{name:'std::string copy{str_with_len_N};/256',data:[25.1,25.5,83.9,90.1,54.8]},
{name:'std::string copy{str_with_len_N};/512',data:[28.7,29.2,88.5,89.3,53.5]},
{name:'std::string copy{str_with_len_N};/1024',data:[46.9,45.8,91.4,95.8,62.2]},
{name:'std::string copy{str_with_len_N};/2048',data:[69.5,71.1,128,132,88.4]},
{name:'std::string copy{str_with_len_N};/4096',data:[118,121,178,180,154]},
{name:'stringa copy{str_with_len_N};/15',data:[1.11,1.30,1.33,3.97,2.70]},
{name:'stringa copy{str_with_len_N};/16',data:[1.11,1.29,1.28,4.09,5.04]},
{name:'stringa copy{str_with_len_N};/23',data:[1.13,1.28,1.27,4.04,4.81]},
{name:'stringa copy{str_with_len_N};/24',data:[16.0,15.9,15.8,18.4,4.82]},
{name:'stringa copy{str_with_len_N};/32',data:[16.1,16.1,15.8,19.0,4.76]},
{name:'stringa copy{str_with_len_N};/64',data:[16.0,15.9,16.0,18.4,4.79]},
{name:'stringa copy{str_with_len_N};/128',data:[16.0,16.1,16.0,18.9,4.98]},
{name:'stringa copy{str_with_len_N};/256',data:[15.9,16.0,16.0,18.2,4.87]},
{name:'stringa copy{str_with_len_N};/512',data:[15.9,16.1,15.8,18.5,4.79]},
{name:'stringa copy{str_with_len_N};/1024',data:[16.0,16.1,15.8,18.4,4.81]},
{name:'stringa copy{str_with_len_N};/2048',data:[16.1,16.2,15.9,18.3,4.84]},
{name:'stringa copy{str_with_len_N};/4096',data:[16.0,16.2,15.7,18.4,4.86]},
{name:'lstringa< 16 > copy{str_with_len_N};/15',data:[4.45,4.43,5.10,8.05,14.4]},
{name:'lstringa< 16 > copy{str_with_len_N};/16',data:[4.60,4.88,5.71,8.00,14.5]},
{name:'lstringa< 16 > copy{str_with_len_N};/23',data:[4.53,5.22,5.81,8.62,29.6]},
{name:'lstringa< 16 > copy{str_with_len_N};/24',data:[24.4,24.4,84.0,86.2,32.4]},
{name:'lstringa< 16 > copy{str_with_len_N};/32',data:[23.5,24.1,84.7,85.7,42.4]},
{name:'lstringa< 16 > copy{str_with_len_N};/64',data:[25.7,25.4,81.1,82.9,37.6]},
{name:'lstringa< 16 > copy{str_with_len_N};/128',data:[26.2,25.6,85.1,87.2,38.7]},
{name:'lstringa< 16 > copy{str_with_len_N};/256',data:[27.1,29.7,85.4,87.6,51.0]},
{name:'lstringa< 16 > copy{str_with_len_N};/512',data:[32.1,34.0,88.6,92.1,47.3]},
{name:'lstringa< 16 > copy{str_with_len_N};/1024',data:[54.7,53.7,92.6,103,56.8]},
{name:'lstringa< 16 > copy{str_with_len_N};/2048',data:[62.1,66.7,132,128,83.2]},
{name:'lstringa< 16 > copy{str_with_len_N};/4096',data:[87.4,88.0,186,188,141]},
{name:'lstringa< 512 > copy{str_with_len_N};/15',data:[4.78,5.14,5.06,8.52,14.5]},
{name:'lstringa< 512 > copy{str_with_len_N};/16',data:[4.84,5.18,5.16,8.53,15.1]},
{name:'lstringa< 512 > copy{str_with_len_N};/23',data:[4.93,5.43,5.01,8.48,14.7]},
{name:'lstringa< 512 > copy{str_with_len_N};/24',data:[4.79,5.23,5.10,8.74,14.9]},
{name:'lstringa< 512 > copy{str_with_len_N};/32',data:[4.56,4.77,8.45,11.9,17.9]},
{name:'lstringa< 512 > copy{str_with_len_N};/64',data:[6.35,6.29,8.13,11.8,17.4]},
{name:'lstringa< 512 > copy{str_with_len_N};/128',data:[6.59,7.26,9.99,12.3,17.9]},
{name:'lstringa< 512 > copy{str_with_len_N};/256',data:[17.2,7.80,9.93,13.0,19.7]},
{name:'lstringa< 512 > copy{str_with_len_N};/512',data:[10.1,10.4,10.8,14.4,22.2]},
{name:'lstringa< 512 > copy{str_with_len_N};/1024',data:[56.4,54.1,93.7,101,55.1]},
{name:'lstringa< 512 > copy{str_with_len_N};/2048',data:[67.1,66.6,124,125,80.3]},
{name:'lstringa< 512 > copy{str_with_len_N};/4096',data:[88.7,85.3,187,188,149]}
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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L602" > 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.
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Here, I attempted to run tests that are similar in logic to std::from_chars.< / span > < / span > < / td > < td class = "benchmarkresult" > 26.4< / td > < td class = "benchmarkresult" > 26.8< / td > < td class = "benchmarkresult" > 31.2< / td > < td class = "benchmarkresult" > 31.8< / td > < td class = "benchmarkresult" > 73.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L641" > 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
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signs, spaces, 0x prefixes, etc.< / span > < / span > < / td > < td class = "benchmarkresult" > 14.7< / td > < td class = "benchmarkresult" > 11.3< / td > < td class = "benchmarkresult" > 13.4< / 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/main/bench/bench_str.cpp#L669" > 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,
2026-02-04 14:25:40 +00:00
decimal system, no leading spaces, and no plus sign.< / span > < / span > < / td > < td class = "benchmarkresult" > 12.7< / td > < td class = "benchmarkresult" > 8.07< / td > < td class = "benchmarkresult" > 14.0< / td > < td class = "benchmarkresult" > 14.9< / td > < td class = "benchmarkresult" > 19.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L669" > ssa 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 13.1< / td > < td class = "benchmarkresult" > 8.02< / td > < td class = "benchmarkresult" > 13.0< / td > < td class = "benchmarkresult" > 15.2< / td > < td class = "benchmarkresult" > 17.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L669" > lstringa< 20> 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 12.6< / td > < td class = "benchmarkresult" > 8.16< / td > < td class = "benchmarkresult" > 13.1< / td > < td class = "benchmarkresult" > 15.7< / 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 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 : [
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{name:'std::string s = "123456789"; int res = std::strtol(s.c_str(), 0, 10);',data:[26.4,26.8,31.2,31.8,73.7]},
{name:'std::string_view s = "123456789"; std::from_chars(s.data(), s.data() + s.size(), res, 10);',data:[14.7,11.3,13.4,14.0,27.8]},
{name:'stringa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[12.7,8.07,14.0,14.9,19.1]},
{name:'ssa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[13.1,8.02,13.0,15.2,17.1]},
{name:'lstringa< 20 > s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[12.6,8.16,13.1,15.7,17.3]}
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]}< / script >
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< div class = "benchset" id = "bs16" > < h4 > < a id = "bs182426078870126042750" href = "#bs182426078870126042750" > #< / a > Convert to unsigned ' abcDef' < / 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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L615" > 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) {
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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);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Всё то же, только для 16р о
2026-02-04 14:25:40 +00:00
Everything is the same, only for the hexadecimal system< / span > < / span > < / td > < td class = "benchmarkresult" > 23.2< / td > < td class = "benchmarkresult" > 23.5< / td > < td class = "benchmarkresult" > 33.4< / td > < td class = "benchmarkresult" > 36.5< / td > < td class = "benchmarkresult" > 55.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L655" > 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) {
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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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 9.53< / td > < td class = "benchmarkresult" > 10.0< / td > < td class = "benchmarkresult" > 8.21< / td > < td class = "benchmarkresult" > 9.40< / td > < td class = "benchmarkresult" > 28.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L684" > stringa s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int, true, 16, 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 11.4< / td > < td class = "benchmarkresult" > 8.15< / td > < td class = "benchmarkresult" > 12.3< / td > < td class = "benchmarkresult" > 14.3< / td > < td class = "benchmarkresult" > 17.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L684" > ssa s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int, true, 16, 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 11.2< / td > < td class = "benchmarkresult" > 8.03< / td > < td class = "benchmarkresult" > 11.7< / td > < td class = "benchmarkresult" > 12.8< / td > < td class = "benchmarkresult" > 16.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L684" > 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);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 11.3< / td > < td class = "benchmarkresult" > 7.86< / td > < td class = "benchmarkresult" > 11.8< / td > < td class = "benchmarkresult" > 14.5< / 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 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 : [
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{name:'std::string s = "abcDef"; int res = std::strtol(s.c_str(), 0, 16);',data:[23.2,23.5,33.4,36.5,55.0]},
{name:'std::string_view s = "abcDef"; std::from_chars(s.data(), s.data() + s.size(), res, 16);',data:[9.53,10.0,8.21,9.40,28.2]},
{name:'stringa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[11.4,8.15,12.3,14.3,17.4]},
{name:'ssa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[11.2,8.03,11.7,12.8,16.3]},
{name:'lstringa< 20 > s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[11.3,7.86,11.8,14.5,16.5]}
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]}< / script >
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< div class = "benchset" id = "bs17" > < h4 > < a id = "bs52606100125109966680" href = "#bs52606100125109966680" > #< / a > Convert to int ' 1234567' < / h4 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L628" > 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) {
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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);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А
2026-02-04 14:25:40 +00:00
And here we have parsing of an arbitrary number.< / span > < / span > < / td > < td class = "benchmarkresult" > 28.9< / td > < td class = "benchmarkresult" > 28.2< / td > < td class = "benchmarkresult" > 43.3< / td > < td class = "benchmarkresult" > 45.1< / td > < td class = "benchmarkresult" > 78.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L699" > stringa s = " 123456789" ; int res = s.to_int< int>; // Check overflow< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr0(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 18.9< / td > < td class = "benchmarkresult" > 15.3< / td > < td class = "benchmarkresult" > 17.7< / td > < td class = "benchmarkresult" > 22.6< / 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/main/bench/bench_str.cpp#L714" > 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) {
2025-11-26 19:15:50 +00:00
int res = t.to_int< int, 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 14.9< / td > < td class = "benchmarkresult" > 13.7< / td > < td class = "benchmarkresult" > 16.7< / td > < td class = "benchmarkresult" > 16.8< / td > < td class = "benchmarkresult" > 23.4< / 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:[28.9,28.2,43.3,45.1,78.2]},
{name:'stringa s = " 123456789"; int res = s.to_int< int > ; // Check overflow',data:[18.9,15.3,17.7,22.6,23.2]},
{name:'ssa s = " 123456789"; int res = s.to_int< int , false > ; // No check overflow',data:[14.9,13.7,16.7,16.8,23.4]}
2025-11-26 19:15:50 +00:00
]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs18" > < h4 > < a id = "bs182348477702821075660" href = "#bs182348477702821075660" > #< / a > Convert to double ' 1234.567e10' < / h4 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L745" > 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" > 66.7< / td > < td class = "benchmarkresult" > 67.9< / td > < td class = "benchmarkresult" > 101< / td > < td class = "benchmarkresult" > 99.9< / td > < td class = "benchmarkresult" > 210< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L762" > std::string_view s = " 1234.567e10" ; std::from_chars(s.data(), s.data() + s.size(), res);< / a > < span class = "tooltiptext code" > void ToDoubleFromChars(benchmark::State& state, const std::string_view& s, double c) {
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for (auto _: state) {
double res = 0;
if (std::from_chars(s.data(), s.data() + s.size(), res).ec != std::errc{}) {
state.SkipWithError(" not equal" );
}
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 24.9< / td > < td class = "benchmarkresult" > 26.1< / td > < td class = "benchmarkresult" > 61.4< / td > < td class = "benchmarkresult" > 79.1< / td > < td class = "benchmarkresult" > 113< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L778" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.4< / td > < td class = "benchmarkresult" > 24.9< / td > < td class = "benchmarkresult" > 35.2< / td > < td class = "benchmarkresult" > 35.1< / td > < td class = "benchmarkresult" > 43.5< / 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 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:[66.7,67.9,101,99.9,210]},
{name:'std::string_view s = "1234.567e10"; std::from_chars(s.data(), s.data() + s.size(), res);',data:[24.9,26.1,61.4,79.1,113]},
{name:'ssa s = "1234.567e10"; double res = *s.to_double()',data:[25.4,24.9,35.2,35.1,43.5]}
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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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L802" > 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" > 1382< / td > < td class = "benchmarkresult" > 1400< / td > < td class = "benchmarkresult" > 4811< / td > < td class = "benchmarkresult" > 5721< / td > < td class = "benchmarkresult" > 4444< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L821" > std::string str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStdStringConstLiteral(benchmark::State& state) {
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for (auto _: state) {
std::string result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 347< / td > < td class = "benchmarkresult" > 339< / td > < td class = "benchmarkresult" > 1092< / td > < td class = "benchmarkresult" > 1309< / td > < td class = "benchmarkresult" > 625< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L837" > 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" > 363< / td > < td class = "benchmarkresult" > 357< / td > < td class = "benchmarkresult" > 739< / td > < td class = "benchmarkresult" > 919< / td > < td class = "benchmarkresult" > 758< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L837" > lstringa< 128> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Чем больше внутренний буфер, тем меньше раз требуется
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аллокация, тем быстрее результат.
The larger the internal buffer, the fewer allocations are
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required, and the faster the result.< / span > < / span > < / td > < td class = "benchmarkresult" > 249< / td > < td class = "benchmarkresult" > 238< / td > < td class = "benchmarkresult" > 381< / td > < td class = "benchmarkresult" > 511< / td > < td class = "benchmarkresult" > 584< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L837" > lstringa< 512> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 213< / td > < td class = "benchmarkresult" > 211< / td > < td class = "benchmarkresult" > 230< / td > < td class = "benchmarkresult" > 355< / td > < td class = "benchmarkresult" > 458< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L837" > lstringa< 1024> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
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" > 135< / td > < td class = "benchmarkresult" > 141< / td > < td class = "benchmarkresult" > 136< / td > < td class = "benchmarkresult" > 242< / td > < td class = "benchmarkresult" > 416< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d c o n s t l i t e r a l o f 1 6 b y t e s 6 4 t i m e s , 1 0 2 4 t o t a l l e n g t h ' ] = { i d : ' b s 1 9 ' , t e s t s : [
2026-02-04 14:25:40 +00:00
{name:'std::stringstream str; ... str < < "abbaabbaabbaabba";',data:[1382,1400,4811,5721,4444]},
{name:'std::string str; ... str += "abbaabbaabbaabba";',data:[347,339,1092,1309,625]},
{name:'lstringa< 8 > str; ... str += "abbaabbaabbaabba";',data:[363,357,739,919,758]},
{name:'lstringa< 128 > str; ... str += "abbaabbaabbaabba";',data:[249,238,381,511,584]},
{name:'lstringa< 512 > str; ... str += "abbaabbaabbaabba";',data:[213,211,230,355,458]},
{name:'lstringa< 1024 > str; ... str += "abbaabbaabbaabba";',data:[135,141,136,242,416]}
2025-04-05 14:21:11 +00:00
]}< / 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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L862" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1371< / td > < td class = "benchmarkresult" > 1387< / td > < td class = "benchmarkresult" > 4701< / td > < td class = "benchmarkresult" > 5561< / td > < td class = "benchmarkresult" > 4444< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L882" > std::string str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStdStrStrConstLiteral(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 < 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1266< / td > < td class = "benchmarkresult" > 1230< / td > < td class = "benchmarkresult" > 3729< / td > < td class = "benchmarkresult" > 3842< / td > < td class = "benchmarkresult" > 2032< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L900" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 413< / td > < td class = "benchmarkresult" > 388< / td > < td class = "benchmarkresult" > 711< / td > < td class = "benchmarkresult" > 828< / td > < td class = "benchmarkresult" > 874< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L900" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 315< / td > < td class = "benchmarkresult" > 348< / td > < td class = "benchmarkresult" > 450< / td > < td class = "benchmarkresult" > 546< / td > < td class = "benchmarkresult" > 729< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L900" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 287< / td > < td class = "benchmarkresult" > 303< / td > < td class = "benchmarkresult" > 302< / td > < td class = "benchmarkresult" > 384< / td > < td class = "benchmarkresult" > 588< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L900" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 231< / td > < td class = "benchmarkresult" > 250< / td > < td class = "benchmarkresult" > 209< / td > < td class = "benchmarkresult" > 267< / td > < td class = "benchmarkresult" > 580< / 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 : [
2026-02-04 14:25:40 +00:00
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; ' , data: [ 1371 , 1387 , 4701 , 5561 , 4444 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba";',data:[1266,1230,3729,3842,2032]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba";',data:[413,388,711,828,874]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba";',data:[315,348,450,546,729]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba";',data:[287,303,302,384,588]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba";',data:[231,250,209,267,580]}
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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L928" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 116458< / td > < td class = "benchmarkresult" > 110614< / td > < td class = "benchmarkresult" > 226339< / td > < td class = "benchmarkresult" > 272552< / td > < td class = "benchmarkresult" > 223603< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L948" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 71688< / td > < td class = "benchmarkresult" > 72502< / td > < td class = "benchmarkresult" > 196248< / td > < td class = "benchmarkresult" > 193600< / td > < td class = "benchmarkresult" > 116339< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L966" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 40461< / td > < td class = "benchmarkresult" > 42661< / td > < td class = "benchmarkresult" > 18586< / td > < td class = "benchmarkresult" > 25270< / td > < td class = "benchmarkresult" > 44372< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L966" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 24967< / td > < td class = "benchmarkresult" > 24880< / td > < td class = "benchmarkresult" > 16639< / td > < td class = "benchmarkresult" > 22011< / td > < td class = "benchmarkresult" > 40049< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L966" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 17099< / td > < td class = "benchmarkresult" > 18255< / td > < td class = "benchmarkresult" > 16065< / td > < td class = "benchmarkresult" > 21538< / td > < td class = "benchmarkresult" > 37513< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L966" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 18583< / td > < td class = "benchmarkresult" > 19723< / td > < td class = "benchmarkresult" > 16783< / td > < td class = "benchmarkresult" > 21560< / td > < td class = "benchmarkresult" > 38281< / 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 : [
2026-02-04 14:25:40 +00:00
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; 2048 times ' , data: [ 116458 , 110614 , 226339 , 272552 , 223603 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[71688,72502,196248,193600,116339]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[40461,42661,18586,25270,44372]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[24967,24880,16639,22011,40049]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[17099,18255,16065,21538,37513]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[18583,19723,16783,21560,38281]}
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]}< / 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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L993" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1515< / td > < td class = "benchmarkresult" > 1684< / td > < td class = "benchmarkresult" > 4316< / td > < td class = "benchmarkresult" > 5486< / td > < td class = "benchmarkresult" > 4573< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1015" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1485< / td > < td class = "benchmarkresult" > 1517< / td > < td class = "benchmarkresult" > 3897< / td > < td class = "benchmarkresult" > 3948< / td > < td class = "benchmarkresult" > 2452< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1036" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 470< / td > < td class = "benchmarkresult" > 500< / td > < td class = "benchmarkresult" > 796< / td > < td class = "benchmarkresult" > 912< / td > < td class = "benchmarkresult" > 1196< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1036" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 418< / td > < td class = "benchmarkresult" > 421< / td > < td class = "benchmarkresult" > 516< / td > < td class = "benchmarkresult" > 580< / td > < td class = "benchmarkresult" > 1120< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1036" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 367< / td > < td class = "benchmarkresult" > 373< / td > < td class = "benchmarkresult" > 389< / td > < td class = "benchmarkresult" > 446< / td > < td class = "benchmarkresult" > 973< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1036" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 290< / td > < td class = "benchmarkresult" > 305< / td > < td class = "benchmarkresult" > 287< / td > < td class = "benchmarkresult" > 353< / td > < td class = "benchmarkresult" > 874< / 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 : [
2026-02-04 14:25:40 +00:00
{name:'std::stringstream str; ... str < < str_var1 < < str_var2 ; ' , data: [ 1515 , 1684 , 4316 , 5486 , 4573 ] } ,
{name:'std::string str; ... str += str_var1 + str_var2;',data:[1485,1517,3897,3948,2452]},
{name:'lstringa< 16 > str; ... str += str_var1 + str_var2;',data:[470,500,796,912,1196]},
{name:'lstringa< 128 > str; ... str += str_var1 + str_var2;',data:[418,421,516,580,1120]},
{name:'lstringa< 512 > str; ... str += str_var1 + str_var2;',data:[367,373,389,446,973]},
{name:'lstringa< 1024 > str; ... str += str_var1 + str_var2;',data:[290,305,287,353,874]}
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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1065" > 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);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3014< / td > < td class = "benchmarkresult" > 3201< / td > < td class = "benchmarkresult" > 11483< / td > < td class = "benchmarkresult" > 11655< / td > < td class = "benchmarkresult" > 6730< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1083" > 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);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 472< / td > < td class = "benchmarkresult" > 440< / td > < td class = "benchmarkresult" > 1108< / td > < td class = "benchmarkresult" > 1230< / td > < td class = "benchmarkresult" > 1657< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1099" > 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);
}
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1422< / td > < td class = "benchmarkresult" > 1483< / td > < td class = "benchmarkresult" > 2766< / td > < td class = "benchmarkresult" > 2831< / td > < td class = "benchmarkresult" > 2931< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1117" > 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);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1174< / td > < td class = "benchmarkresult" > 1356< / td > < td class = "benchmarkresult" > 1868< / td > < td class = "benchmarkresult" > 2410< / td > < td class = "benchmarkresult" > 2192< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1133" > lstringa< 8> str; str.format(" test = {} times" , k);< / a > < span class = "tooltiptext code" > template< typename T>
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void AppendSimStrStrNumStrF(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result;
result.format(" test = {} times" , k);
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В с
In simstr format, the first time it doesn't fit into such a
2026-02-04 14:25:40 +00:00
string without allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 1387< / td > < td class = "benchmarkresult" > 1740< / td > < td class = "benchmarkresult" > 2065< / td > < td class = "benchmarkresult" > 2711< / td > < td class = "benchmarkresult" > 3127< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1133" > 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
2026-02-04 14:25:40 +00:00
And it fits in this one. Use buffers of the appropriate size right away.< / span > < / span > < / td > < td class = "benchmarkresult" > 1056< / td > < td class = "benchmarkresult" > 1116< / td > < td class = "benchmarkresult" > 1014< / td > < td class = "benchmarkresult" > 1605< / td > < td class = "benchmarkresult" > 2459< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1151" > 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.
2026-02-04 14:25:40 +00:00
The result does not fit into SSO, an allocation occurs.< / span > < / span > < / td > < td class = "benchmarkresult" > 294< / td > < td class = "benchmarkresult" > 304< / td > < td class = "benchmarkresult" > 803< / td > < td class = "benchmarkresult" > 880< / td > < td class = "benchmarkresult" > 593< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1151" > 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.
2026-02-04 14:25:40 +00:00
Once again, use appropriately sized buffers from the start.< / span > < / span > < / td > < td class = "benchmarkresult" > 151< / td > < td class = "benchmarkresult" > 148< / td > < td class = "benchmarkresult" > 155< / td > < td class = "benchmarkresult" > 188< / td > < td class = "benchmarkresult" > 379< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1151" > stringa str = " test = " + k + " times" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void AppendSimStrStrNumStr(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result = " test = " _ss + k + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Под WASM размер SSO 15 символов, что явно не хватает для размещения
2026-01-21 11:59:17 +00:00
результата, отсюда и такое время.
Under WASM, the SSO size is 15 characters, which is clearly not
2026-02-04 14:25:40 +00:00
enough to accommodate the result, hence the long time.< / span > < / span > < / td > < td class = "benchmarkresult" > 145< / td > < td class = "benchmarkresult" > 167< / td > < td class = "benchmarkresult" > 151< / td > < td class = "benchmarkresult" > 237< / td > < td class = "benchmarkresult" > 564< / 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 : [
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{name:'std::stringstream str; str < < "test = " < < k < < " times " ; ' , data: [ 3014 , 3201 , 11483 , 11655 , 6730 ] } ,
{name:'std::string str = "test = " + std::to_string(k) + " times";',data:[472,440,1108,1230,1657]},
{name:'char buf[100]; sprintf(buf, "test = %u times", k); std::string str = buf;',data:[1422,1483,2766,2831,2931]},
{name:'std::string str = std::format("test = {} times", k);',data:[1174,1356,1868,2410,2192]},
{name:'lstringa< 8 > str; str.format("test = {} times", k);',data:[1387,1740,2065,2711,3127]},
{name:'lstringa< 32 > str; str.format("test = {} times", k);',data:[1056,1116,1014,1605,2459]},
{name:'lstringa< 8 > str = "test = " + k + " times";',data:[294,304,803,880,593]},
{name:'lstringa< 32 > str = "test = " + k + " times";',data:[151,148,155,188,379]},
{name:'stringa str = "test = " + k + " times";',data:[145,167,151,237,564]}
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]}< / script >
2026-02-03 07:38:21 +00:00
< div class = "benchset" id = "bs24" > < h4 > < a id = "bs7106975351756760120" href = "#bs7106975351756760120" > #< / a > Split text and convert to int< / h4 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1181" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 271< / td > < td class = "benchmarkresult" > 280< / td > < td class = "benchmarkresult" > 557< / td > < td class = "benchmarkresult" > 556< / td > < td class = "benchmarkresult" > 614< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1205" > ssa::splitter + ssa::as_int< / a > < span class = "tooltiptext code" > void SplitConvertIntSimStr(benchmark::State& state) {
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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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 152< / td > < td class = "benchmarkresult" > 129< / td > < td class = "benchmarkresult" > 163< / td > < td class = "benchmarkresult" > 297< / td > < td class = "benchmarkresult" > 274< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1222" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 200< / td > < td class = "benchmarkresult" > 128< / td > < td class = "benchmarkresult" > 187< / td > < td class = "benchmarkresult" > 214< / td > < td class = "benchmarkresult" > 321< / 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 : [
2026-02-04 14:25:40 +00:00
{name:'std::string::find + substr + std::strtol',data:[271,280,557,556,614]},
{name:'ssa::splitter + ssa::as_int',data:[152,129,163,297,274]},
{name:'ssa::splitf + functor',data:[200,128,187,214,321]}
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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1243" > 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,
2026-02-04 14:25:40 +00:00
it works quickly.< / span > < / span > < / td > < td class = "benchmarkresult" > 846< / td > < td class = "benchmarkresult" > 838< / td > < td class = "benchmarkresult" > 1151< / td > < td class = "benchmarkresult" > 1277< / td > < td class = "benchmarkresult" > 3397< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1297" > 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
2026-02-04 14:25:40 +00:00
conflicting replacements.< / span > < / span > < / td > < td class = "benchmarkresult" > 2461< / td > < td class = "benchmarkresult" > 2528< / td > < td class = "benchmarkresult" > 2019< / td > < td class = "benchmarkresult" > 2209< / td > < td class = "benchmarkresult" > 4970< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1351" > 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
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const std::string_view repl_from = " -< >' \" & " ;
const std::string_view repl_to[] = {" " , " & lt;" , " & gt;" , " & #39;" , " & quot;" , " & amp;" };
for (auto _: state) {
std::string result;
for (size_t start = 0; start < source.size();) {
size_t idx = source.find_first_of(repl_from, start);
if (idx == std::string::npos) {
result += source.substr(start);
break;
}
if (idx > start) {
result += source.substr(start, idx - start);
}
size_t what = repl_from.find(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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1085< / td > < td class = "benchmarkresult" > 1218< / td > < td class = "benchmarkresult" > 2391< / td > < td class = "benchmarkresult" > 2536< / td > < td class = "benchmarkresult" > 3462< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1404" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1294< / td > < td class = "benchmarkresult" > 1686< / td > < td class = "benchmarkresult" > 1462< / td > < td class = "benchmarkresult" > 1563< / td > < td class = "benchmarkresult" > 3591< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1404" > replace runtime symbols with simstr and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
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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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1076< / td > < td class = "benchmarkresult" > 1067< / td > < td class = "benchmarkresult" > 1359< / td > < td class = "benchmarkresult" > 1398< / td > < td class = "benchmarkresult" > 3097< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1451" > 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 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1042< / td > < td class = "benchmarkresult" > 1276< / td > < td class = "benchmarkresult" > 1231< / td > < td class = "benchmarkresult" > 1306< / td > < td class = "benchmarkresult" > 2949< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1451" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 889< / td > < td class = "benchmarkresult" > 875< / td > < td class = "benchmarkresult" > 1178< / td > < td class = "benchmarkresult" > 1348< / td > < td class = "benchmarkresult" > 2889< / 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 : [
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{name:'Naive (and wrong) replace symbols with std::string find + replace',data:[846,838,1151,1277,3397]},
{name:'replace symbols with std::string find_first_of + replace',data:[2461,2528,2019,2209,4970]},
{name:'replace symbols with std::string_view find_first_of + copy',data:[1085,1218,2391,2536,3462]},
{name:'replace runtime symbols with string expressions and without remembering all search results',data:[1294,1686,1462,1563,3591]},
{name:'replace runtime symbols with simstr and memorization of all search results',data:[1076,1067,1359,1398,3097]},
{name:'replace const symbols with string expressions and without remembering all search results',data:[1042,1276,1231,1306,2949]},
{name:'replace const symbols with string expressions and memorization of all search results',data:[889,875,1178,1348,2889]}
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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-04 14:25:40 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1505" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 170< / td > < td class = "benchmarkresult" > 189< / td > < td class = "benchmarkresult" > 344< / td > < td class = "benchmarkresult" > 352< / td > < td class = "benchmarkresult" > 431< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1545" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 314< / td > < td class = "benchmarkresult" > 351< / td > < td class = "benchmarkresult" > 401< / td > < td class = "benchmarkresult" > 428< / td > < td class = "benchmarkresult" > 499< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1585" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 165< / td > < td class = "benchmarkresult" > 204< / td > < td class = "benchmarkresult" > 326< / td > < td class = "benchmarkresult" > 352< / td > < td class = "benchmarkresult" > 410< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1624" > Short 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 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 193< / td > < td class = "benchmarkresult" > 208< / td > < td class = "benchmarkresult" > 267< / td > < td class = "benchmarkresult" > 303< / td > < td class = "benchmarkresult" > 371< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1624" > Short 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 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" > 186< / td > < td class = "benchmarkresult" > 262< / td > < td class = "benchmarkresult" > 356< / td > < td class = "benchmarkresult" > 402< / td > < td class = "benchmarkresult" > 416< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1657" > 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" > 135< / td > < td class = "benchmarkresult" > 194< / td > < td class = "benchmarkresult" > 217< / td > < td class = "benchmarkresult" > 270< / td > < td class = "benchmarkresult" > 253< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1657" > 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" > 152< / td > < td class = "benchmarkresult" > 176< / td > < td class = "benchmarkresult" > 303< / td > < td class = "benchmarkresult" > 345< / td > < td class = "benchmarkresult" > 313< / 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 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:[170,189,344,352,431]},
{name:'Short replace symbols with std::string find_first_of + replace',data:[314,351,401,428,499]},
{name:'Short replace symbols with std::string_view find_first_of + copy',data:[165,204,326,352,410]},
{name:'Short replace runtime symbols with string expressions and without remembering all search results',data:[193,208,267,303,371]},
{name:'Short replace runtime symbols with simstr and memorization of all search results',data:[186,262,356,402,416]},
{name:'Short replace const symbols with string expressions and without remembering all search results',data:[135,194,217,270,253]},
{name:'Short replace const symbols with string expressions and memorization of all search results',data:[152,176,303,345,313]}
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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 >
2026-01-21 11:59:17 +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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1696" > 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" > 160< / td > < td class = "benchmarkresult" > 259< / td > < td class = "benchmarkresult" > 226< / td > < td class = "benchmarkresult" > 259< / td > < td class = "benchmarkresult" > 378< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1696" > 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" > 522< / td > < td class = "benchmarkresult" > 861< / td > < td class = "benchmarkresult" > 793< / td > < td class = "benchmarkresult" > 848< / td > < td class = "benchmarkresult" > 1351< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1696" > 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" > 1021< / td > < td class = "benchmarkresult" > 1615< / td > < td class = "benchmarkresult" > 1453< / td > < td class = "benchmarkresult" > 1584< / td > < td class = "benchmarkresult" > 2782< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1696" > 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" > 2275< / td > < td class = "benchmarkresult" > 3426< / td > < td class = "benchmarkresult" > 3359< / td > < td class = "benchmarkresult" > 3220< / td > < td class = "benchmarkresult" > 5546< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1696" > 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" > 6028< / td > < td class = "benchmarkresult" > 8466< / td > < td class = "benchmarkresult" > 7816< / td > < td class = "benchmarkresult" > 8086< / td > < td class = "benchmarkresult" > 12567< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1730" > 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" > 136< / td > < td class = "benchmarkresult" > 204< / td > < td class = "benchmarkresult" > 224< / td > < td class = "benchmarkresult" > 244< / td > < td class = "benchmarkresult" > 304< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1730" > 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" > 449< / td > < td class = "benchmarkresult" > 556< / td > < td class = "benchmarkresult" > 614< / td > < td class = "benchmarkresult" > 643< / td > < td class = "benchmarkresult" > 1149< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1730" > replace bb to ---- in lstringa< 8>|512< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 864< / td > < td class = "benchmarkresult" > 970< / td > < td class = "benchmarkresult" > 1070< / td > < td class = "benchmarkresult" > 1112< / td > < td class = "benchmarkresult" > 2114< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1730" > 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" > 1732< / td > < td class = "benchmarkresult" > 1985< / td > < td class = "benchmarkresult" > 1874< / td > < td class = "benchmarkresult" > 2056< / td > < td class = "benchmarkresult" > 4209< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1730" > replace bb to ---- in lstringa< 8>|2048< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3799< / td > < td class = "benchmarkresult" > 3912< / td > < td class = "benchmarkresult" > 3872< / td > < td class = "benchmarkresult" > 3901< / td > < td class = "benchmarkresult" > 7794< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1753" > 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" > 100< / td > < td class = "benchmarkresult" > 119< / td > < td class = "benchmarkresult" > 185< / td > < td class = "benchmarkresult" > 206< / td > < td class = "benchmarkresult" > 216< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1753" > replace bb to ---- by init stringa|256< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 304< / td > < td class = "benchmarkresult" > 335< / td > < td class = "benchmarkresult" > 369< / td > < td class = "benchmarkresult" > 503< / td > < td class = "benchmarkresult" > 741< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1753" > replace bb to ---- by init stringa|512< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 693< / td > < td class = "benchmarkresult" > 761< / td > < td class = "benchmarkresult" > 796< / td > < td class = "benchmarkresult" > 1130< / td > < td class = "benchmarkresult" > 1659< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1753" > replace bb to ---- by init stringa|1024< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
2025-11-26 19:15:50 +00:00
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1461< / td > < td class = "benchmarkresult" > 1682< / td > < td class = "benchmarkresult" > 1684< / td > < td class = "benchmarkresult" > 2172< / td > < td class = "benchmarkresult" > 3573< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1753" > replace bb to ---- by init stringa|2048< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
2025-11-26 19:15:50 +00:00
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2974< / td > < td class = "benchmarkresult" > 3300< / td > < td class = "benchmarkresult" > 3149< / td > < td class = "benchmarkresult" > 4441< / td > < td class = "benchmarkresult" > 7063< / td > < / tr >
2026-02-03 07:38:21 +00:00
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e A l l S t r T o L o n g e r S i z e ' ] = { i d : ' b s 2 7 ' , t e s t s : [
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{name:'replace bb to ---- in std::string|64',data:[160,259,226,259,378]},
{name:'replace bb to ---- in std::string|256',data:[522,861,793,848,1351]},
{name:'replace bb to ---- in std::string|512',data:[1021,1615,1453,1584,2782]},
{name:'replace bb to ---- in std::string|1024',data:[2275,3426,3359,3220,5546]},
{name:'replace bb to ---- in std::string|2048',data:[6028,8466,7816,8086,12567]},
{name:'replace bb to ---- in lstringa< 8 > |64',data:[136,204,224,244,304]},
{name:'replace bb to ---- in lstringa< 8 > |256',data:[449,556,614,643,1149]},
{name:'replace bb to ---- in lstringa< 8 > |512',data:[864,970,1070,1112,2114]},
{name:'replace bb to ---- in lstringa< 8 > |1024',data:[1732,1985,1874,2056,4209]},
{name:'replace bb to ---- in lstringa< 8 > |2048',data:[3799,3912,3872,3901,7794]},
{name:'replace bb to ---- by init stringa|64',data:[100,119,185,206,216]},
{name:'replace bb to ---- by init stringa|256',data:[304,335,369,503,741]},
{name:'replace bb to ---- by init stringa|512',data:[693,761,796,1130,1659]},
{name:'replace bb to ---- by init stringa|1024',data:[1461,1682,1684,2172,3573]},
{name:'replace bb to ---- by init stringa|2048',data:[2974,3300,3149,4441,7063]}
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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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1775" > replace bb to -- in std::string|64< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 122< / td > < td class = "benchmarkresult" > 199< / td > < td class = "benchmarkresult" > 197< / td > < td class = "benchmarkresult" > 206< / td > < td class = "benchmarkresult" > 283< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1775" > replace bb to -- in std::string|256< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 403< / td > < td class = "benchmarkresult" > 635< / td > < td class = "benchmarkresult" > 496< / td > < td class = "benchmarkresult" > 542< / td > < td class = "benchmarkresult" > 995< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1775" > replace bb to -- in std::string|512< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 759< / td > < td class = "benchmarkresult" > 1408< / td > < td class = "benchmarkresult" > 849< / td > < td class = "benchmarkresult" > 968< / td > < td class = "benchmarkresult" > 1844< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1775" > replace bb to -- in std::string|1024< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1521< / td > < td class = "benchmarkresult" > 2878< / td > < td class = "benchmarkresult" > 1966< / td > < td class = "benchmarkresult" > 1813< / td > < td class = "benchmarkresult" > 3877< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1775" > 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);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3014< / td > < td class = "benchmarkresult" > 4530< / td > < td class = "benchmarkresult" > 3153< / td > < td class = "benchmarkresult" > 3634< / td > < td class = "benchmarkresult" > 7023< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1808" > replace bb to -- in lstringa< 8>|64< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 97.8< / td > < td class = "benchmarkresult" > 137< / td > < td class = "benchmarkresult" > 179< / td > < td class = "benchmarkresult" > 196< / td > < td class = "benchmarkresult" > 228< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1808" > replace bb to -- in lstringa< 8>|256< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 284< / td > < td class = "benchmarkresult" > 347< / td > < td class = "benchmarkresult" > 446< / td > < td class = "benchmarkresult" > 475< / td > < td class = "benchmarkresult" > 785< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1808" > replace bb to -- in lstringa< 8>|512< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 526< / td > < td class = "benchmarkresult" > 569< / td > < td class = "benchmarkresult" > 748< / td > < td class = "benchmarkresult" > 802< / td > < td class = "benchmarkresult" > 1545< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1808" > replace bb to -- in lstringa< 8>|1024< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-04 14:25:40 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1125< / td > < td class = "benchmarkresult" > 1085< / td > < td class = "benchmarkresult" > 1392< / td > < td class = "benchmarkresult" > 1498< / td > < td class = "benchmarkresult" > 2838< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1808" > replace bb to -- in lstringa< 8>|2048< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2182< / td > < td class = "benchmarkresult" > 2030< / td > < td class = "benchmarkresult" > 2687< / td > < td class = "benchmarkresult" > 3056< / td > < td class = "benchmarkresult" > 5602< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1830" > 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" > 89.7< / td > < td class = "benchmarkresult" > 107< / td > < td class = "benchmarkresult" > 161< / td > < td class = "benchmarkresult" > 175< / td > < td class = "benchmarkresult" > 175< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1830" > 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" > 238< / td > < td class = "benchmarkresult" > 289< / td > < td class = "benchmarkresult" > 360< / td > < td class = "benchmarkresult" > 391< / td > < td class = "benchmarkresult" > 621< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1830" > 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" > 436< / td > < td class = "benchmarkresult" > 523< / td > < td class = "benchmarkresult" > 596< / td > < td class = "benchmarkresult" > 648< / td > < td class = "benchmarkresult" > 1186< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1830" > 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" > 853< / td > < td class = "benchmarkresult" > 1033< / td > < td class = "benchmarkresult" > 1072< / td > < td class = "benchmarkresult" > 1152< / td > < td class = "benchmarkresult" > 2237< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1830" > 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" > 1625< / td > < td class = "benchmarkresult" > 1962< / td > < td class = "benchmarkresult" > 2037< / td > < td class = "benchmarkresult" > 2207< / td > < td class = "benchmarkresult" > 4470< / 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 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:[122,199,197,206,283]},
{name:'replace bb to -- in std::string|256',data:[403,635,496,542,995]},
{name:'replace bb to -- in std::string|512',data:[759,1408,849,968,1844]},
{name:'replace bb to -- in std::string|1024',data:[1521,2878,1966,1813,3877]},
{name:'replace bb to -- in std::string|2048',data:[3014,4530,3153,3634,7023]},
{name:'replace bb to -- in lstringa< 8 > |64',data:[97.8,137,179,196,228]},
{name:'replace bb to -- in lstringa< 8 > |256',data:[284,347,446,475,785]},
{name:'replace bb to -- in lstringa< 8 > |512',data:[526,569,748,802,1545]},
{name:'replace bb to -- in lstringa< 8 > |1024',data:[1125,1085,1392,1498,2838]},
{name:'replace bb to -- in lstringa< 8 > |2048',data:[2182,2030,2687,3056,5602]},
{name:'replace bb to -- by init stringa|64',data:[89.7,107,161,175,175]},
{name:'replace bb to -- by init stringa|256',data:[238,289,360,391,621]},
{name:'replace bb to -- by init stringa|512',data:[436,523,596,648,1186]},
{name:'replace bb to -- by init stringa|1024',data:[853,1033,1072,1152,2237]},
{name:'replace bb to -- by init stringa|2048',data:[1625,1962,2037,2207,4470]}
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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 Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1927" > hashStrMapA< size_t> emplace & find stringa;< / a > < span class = "tooltiptext code" > void HashMapSimStr(benchmark::State& state) {
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for (auto _: state) {
hashStrMapA< size_t> store;
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
store.try_emplace(bs_sim[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_sim.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
auto find = store.find(bs_sim[idx]);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вставляем в hashStrMapA 10000 stringa длиной от 30 до 50
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символов, а
We insert 10,000 strings of length from 30 to 50 characters into
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hashStrMapA, and then search for them in it.< / span > < / span > < / td > < td class = "benchmarkresult" > 3560953< / td > < td class = "benchmarkresult" > 3722252< / td > < td class = "benchmarkresult" > 3949761< / td > < td class = "benchmarkresult" > 4313136< / td > < td class = "benchmarkresult" > 3104626< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1951" > std::unordered_map< std::string, size_t> emplace & find std::string;< / a > < span class = "tooltiptext code" > void HashMapStdStr(benchmark::State& state) {
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for (auto _: state) {
std::unordered_map< std::string, size_t> store;
for (size_t idx = 0; idx < bs_std.size(); idx++) {
store.try_emplace(bs_std[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_std.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_std.size(); idx++) {
auto find = store.find(bs_std[idx]);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Т о
2026-02-04 14:25:40 +00:00
Same thing with std::string and std::unordered_map< / span > < / span > < / td > < td class = "benchmarkresult" > 3521968< / td > < td class = "benchmarkresult" > 3459756< / td > < td class = "benchmarkresult" > 5604257< / td > < td class = "benchmarkresult" > 5445614< / td > < td class = "benchmarkresult" > 3379032< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L1975" > hashStrMapA< size_t> emplace & find ssa;< / a > < span class = "tooltiptext code" > void HashMapSimSsa(benchmark::State& state) {
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for (auto _: state) {
hashStrMapA< size_t> store;
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
store.emplace(bs_sim[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_sim.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
ssa key = bs_sim[idx];
auto find = store.find(key);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Теперь вставляем stringa, а
2026-02-04 14:25:40 +00:00
Now we insert stringa and search for ssa< / span > < / span > < / td > < td class = "benchmarkresult" > 3547635< / td > < td class = "benchmarkresult" > 3732175< / td > < td class = "benchmarkresult" > 3501051< / td > < td class = "benchmarkresult" > 3935073< / td > < td class = "benchmarkresult" > 3111588< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L2000" > std::unordered_map< std::string, size_t> emplace & find std::string_view;< / a > < span class = "tooltiptext code" > void HashMapStdStrView(benchmark::State& state) {
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for (auto _: state) {
std::unordered_map< std::string, size_t> store;
for (size_t idx = 0; idx < bs_std.size(); idx++) {
store.emplace(bs_std[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_std.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_std.size(); idx++) {
std::string_view key = bs_std[idx];
auto find = store.find(std::string{key});
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вставляем std::string, а
2026-02-04 14:25:40 +00:00
We insert std::string and look for std::string_view< / span > < / span > < / td > < td class = "benchmarkresult" > 4113520< / td > < td class = "benchmarkresult" > 4165106< / td > < td class = "benchmarkresult" > 6433478< / td > < td class = "benchmarkresult" > 6449283< / td > < td class = "benchmarkresult" > 3799479< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' H a s h M a p i n s e r t a n d f i n d ' ] = { i d : ' b s 2 9 ' , t e s t s : [
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{name:'hashStrMapA< size_t > emplace & find stringa;',data:[3560953,3722252,3949761,4313136,3104626]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string;',data:[3521968,3459756,5604257,5445614,3379032]},
{name:'hashStrMapA< size_t > emplace & find ssa;',data:[3547635,3732175,3501051,3935073,3111588]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string_view;',data:[4113520,4165106,6433478,6449283,3799479]}
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]}< / script >
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< div class = "benchset" id = "bs30" > < h4 > < a id = "bs131384792586914680410" href = "#bs131384792586914680410" > #< / a > Build Full Func Name< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Firefox, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L2210" > 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" > 714< / td > < td class = "benchmarkresult" > 1064< / td > < td class = "benchmarkresult" > 1714< / td > < td class = "benchmarkresult" > 1734< / td > < td class = "benchmarkresult" > 2855< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L2242" > 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
2026-01-21 11:59:17 +00:00
+= 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" > 821< / td > < td class = "benchmarkresult" > 1133< / td > < td class = "benchmarkresult" > 1657< / td > < td class = "benchmarkresult" > 1701< / td > < td class = "benchmarkresult" > 3137< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L2272" > Build func full name std::stream;< / a > < span class = "tooltiptext code" > std::string build_full_name_stream() const {
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std::ostringstream str;
if (has_ret_type_resolver) {
str < < " any" ;
} else {
str < < type_names_sv[(unsigned)ret_type];
}
str < < " " < < std_name < < " (" ;
bool add_comma = false;
for (const auto& param : params) {
if (add_comma) {
str < < " , " ;
}
if (param.optional) {
str < < " [" ;
}
param.allowed_types.to_stream(str);
if (param.optional) {
str < < " ]" ;
}
add_comma = true;
}
if (unlim_params) {
if (add_comma) {
str < < " , " ;
}
str < < " ..." ;
}
str < < " )" ;
return str.str();
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Строим имя функции через std::ostringstream и < <
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We construct the function name through std::ostringstream and < < < / span > < / span > < / td > < td class = "benchmarkresult" > 2538< / td > < td class = "benchmarkresult" > 2789< / td > < td class = "benchmarkresult" > 8196< / td > < td class = "benchmarkresult" > 9780< / td > < td class = "benchmarkresult" > 7119< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L2183" > 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" > 510< / td > < td class = "benchmarkresult" > 575< / td > < td class = "benchmarkresult" > 814< / td > < td class = "benchmarkresult" > 868< / td > < td class = "benchmarkresult" > 1353< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp#L2198" > Build func full name stringa 1;< / a > < span class = "tooltiptext code" > stringa build_full_name1() const {
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lstringa< 512> str = e_choice(has_ret_type_resolver, " any" , type_names[(unsigned)ret_type]) + " " + name + " (" ;
bool add_comma = false;
for (const auto& param : params) {
str += e_if(add_comma, " , " ) + e_if(param.optional, " [" ) + param.allowed_types.get_simstr() + e_if(param.optional, " ]" );
add_comma = true;
}
return str + e_if(unlim_params, e_if(add_comma, " , " ) + " ..." ) + " )" ;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Реализация на simstr строках и строковых выражениях.
Инфа о а
разом добавляется в текущую строку. Позволяет операции в цикле
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записать в одну строку, но чуть проигрывает по времени выполнения.
Implementation using simstr strings and string expressions.
Parameter information is added to a temporary string, and then
all at once to the current string. This allows loop operations
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to be written in a single string, but is slightly slower in execution time.< / span > < / span > < / td > < td class = "benchmarkresult" > 640< / td > < td class = "benchmarkresult" > 897< / td > < td class = "benchmarkresult" > 962< / td > < td class = "benchmarkresult" > 1010< / td > < td class = "benchmarkresult" > 1610< / td > < / tr >
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< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' B u i l d F u l l F u n c N a m e ' ] = { i d : ' b s 3 0 ' , t e s t s : [
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{name:'Build func full name std::string;',data:[714,1064,1714,1734,2855]},
{name:'Build func full name std::string 1;',data:[821,1133,1657,1701,3137]},
{name:'Build func full name std::stream;',data:[2538,2789,8196,9780,7119]},
{name:'Build func full name stringa;',data:[510,575,814,868,1353]},
{name:'Build func full name stringa 1;',data:[640,897,962,1010,1610]}
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]}< / script > < / body > < / html >
