Programming Language and compiler
Benchmarks

Rust VS C++ benchmarks

Current benchmark data was generated on Tue Dec 31 2024, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] AMD EPYC 7763 64-Core Processor (Model 1)

* -m in a file name stands for multi-threading or multi-processing

* -i in a file name stands for direct intrinsics usage. (Usage of simd intrinsics via libraries is not counted)

* -ffi in a file name stands for non-stdlib FFI usage

* (You may find time < time(user) + time(sys) for some non-parallelized programs, the overhead is from GC or JIT compiler, which are allowed to take advantage of multi-cores as that's more close to real-world scenarios.)

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.0ms 0.1ms 1.4MB 0ms 0ms g++ 11.4.0
rust 1.rs 1.2ms 0.1ms 1.8MB 0ms 0ms rustc 1.83.0
rust 1.rs 1.2ms 0.1ms 1.8MB 0ms 0ms rustc 1.85.0-nightly
cpp 1.cpp 1.8ms 1.0ms 2.1MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 248ms 0.5ms 4.8MB 240ms 0ms rustc 1.85.0-nightly
rust 8.rs 291ms 2.6ms 4.9MB 277ms 0ms rustc 1.83.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 12ms 0.4ms 1.9MB 0ms 0ms rustc 1.85.0-nightly
rust 8.rs 15ms 0.5ms 1.9MB 10ms 0ms rustc 1.83.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 158ms 1.3ms 1.5MB 150ms 0ms g++ 11.4.0
rust 4-i.rs 160ms 3.5ms 1.8MB 150ms 0ms rustc 1.83.0
cpp 0-i.cpp 168ms 2.5ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 7-i.rs 228ms 2.2ms 1.8MB 220ms 0ms rustc 1.83.0
rust 1.rs 228ms 5.2ms 1.8MB 213ms 0ms rustc 1.83.0
rust 2.rs 263ms 1.3ms 1.8MB 253ms 0ms rustc 1.83.0
rust 3.rs 269ms 1.6ms 1.9MB 257ms 0ms rustc 1.85.0-nightly
cpp 1.cpp 294ms 0.7ms 1.8MB 280ms 0ms g++ 11.4.0
cpp 1.cpp 298ms 3.2ms 2.3MB 287ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 17ms 0.2ms 1.5MB 10ms 0ms g++ 11.4.0
rust 4-i.rs 18ms 0.7ms 1.8MB 10ms 0ms rustc 1.83.0
cpp 0-i.cpp 18ms 0.1ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 1.rs 25ms 0.4ms 1.8MB 17ms 0ms rustc 1.83.0
rust 7-i.rs 25ms 0.7ms 1.8MB 20ms 0ms rustc 1.83.0
rust 2.rs 28ms 0.0ms 1.8MB 20ms 0ms rustc 1.83.0
rust 3.rs 28ms 0.1ms 1.8MB 20ms 0ms rustc 1.85.0-nightly
cpp 1.cpp 32ms 0.4ms 1.8MB 20ms 0ms g++ 11.4.0
cpp 1.cpp 33ms 0.7ms 2.3MB 23ms 0ms clang++ 14.0.0-1ubuntu1.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 458ms 3.4ms 4.2MB 1780ms 0ms g++ 11.4.0
cpp 8-m.cpp 459ms 22ms 7.3MB 1757ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 8-m.rs 469ms 0.9ms 4.6MB 1810ms 0ms rustc 1.85.0-nightly
rust 7-m.rs 471ms 4.6ms 4.2MB 1817ms 3ms rustc 1.83.0
cpp 6-im.cpp 876ms 7.8ms 7.4MB 3420ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 885ms 20ms 4.2MB 3437ms 3ms g++ 11.4.0
rust 8.rs 961ms 14ms 2.4MB 950ms 0ms rustc 1.85.0-nightly
rust 2-m.rs 1855ms 2.8ms 4.1MB 7283ms 7ms rustc 1.83.0
rust 7.rs 1994ms 3.4ms 1.9MB 1987ms 0ms rustc 1.83.0
rust 2.rs 3948ms 11ms 2.0MB 3937ms 0ms rustc 1.83.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 118ms 1.8ms 7.4MB 433ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 7-m.rs 121ms 0.3ms 4.1MB 443ms 3ms rustc 1.83.0
rust 8-m.rs 123ms 3.8ms 4.4MB 443ms 0ms rustc 1.85.0-nightly
cpp 8-m.cpp 126ms 5.2ms 4.1MB 463ms 0ms g++ 11.4.0
cpp 6-im.cpp 225ms 2.6ms 7.4MB 847ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 226ms 2.7ms 4.1MB 857ms 0ms g++ 11.4.0
rust 8.rs 240ms 1.0ms 2.1MB 227ms 0ms rustc 1.85.0-nightly
rust 2-m.rs 468ms 6.0ms 4.1MB 1797ms 3ms rustc 1.83.0
rust 7.rs 498ms 3.3ms 1.8MB 490ms 0ms rustc 1.83.0
rust 2.rs 1001ms 10ms 1.9MB 987ms 0ms rustc 1.83.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 34ms 0.6ms 4.1MB 103ms 0ms rustc 1.83.0
rust 8-m.rs 35ms 0.2ms 4.2MB 110ms 0ms rustc 1.85.0-nightly
cpp 8-m.cpp 37ms 0.9ms 4.0MB 117ms 0ms g++ 11.4.0
cpp 8-m.cpp 42ms 11ms 7.4MB 117ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 8.rs 63ms 1.0ms 2.1MB 50ms 0ms rustc 1.85.0-nightly
cpp 6-im.cpp 64ms 1.6ms 7.3MB 210ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 64ms 0.1ms 4.0MB 227ms 0ms g++ 11.4.0
rust 2-m.rs 123ms 2.3ms 6.1MB 447ms 3ms rustc 1.83.0
rust 7.rs 135ms 1.1ms 1.8MB 123ms 0ms rustc 1.83.0
rust 2.rs 256ms 5.0ms 1.9MB 247ms 0ms rustc 1.83.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1176ms 7.2ms 33.8MB 1153ms 7ms rustc 1.83.0
rust 5.rs 1261ms 3.1ms 33.8MB 1233ms 10ms rustc 1.83.0
rust 3.rs 1415ms 35ms 49.8MB 1373ms 27ms rustc 1.83.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 110ms 0.7ms 5.8MB 97ms 0ms rustc 1.83.0
rust 5.rs 119ms 3.8ms 5.8MB 107ms 0ms rustc 1.83.0
rust 3.rs 130ms 2.4ms 7.8MB 117ms 0ms rustc 1.83.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 532ms 58ms 11.0MB 2017ms 47ms rustc 1.83.0
rust 5-m.rs 590ms 52ms 7.4MB 2213ms 77ms rustc 1.83.0
rust 1-m.rs 937ms 10ms 12.3MB 3370ms 293ms rustc 1.83.0
rust 3.rs 1091ms 13ms 9.3MB 1040ms 37ms rustc 1.83.0
rust 4.rs 1822ms 11ms 7.4MB 1810ms 0ms rustc 1.83.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 50ms 2.6ms 5.3MB 133ms 20ms rustc 1.83.0
rust 3-m.rs 52ms 1.5ms 7.9MB 150ms 20ms rustc 1.83.0
rust 3.rs 73ms 3.0ms 4.0MB 60ms 0ms rustc 1.83.0
rust 1-m.rs 77ms 7.5ms 5.8MB 220ms 50ms rustc 1.83.0
rust 4.rs 110ms 2.4ms 3.4MB 100ms 0ms rustc 1.83.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 108ms 0.9ms 3.6MB 100ms 0ms rustc 1.83.0
rust 2.rs 389ms 4.7ms 3.6MB 380ms 0ms rustc 1.83.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 31ms 0.7ms 2.9MB 20ms 0ms rustc 1.83.0
rust 2.rs 71ms 1.3ms 3.0MB 60ms 0ms rustc 1.83.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 383ms 1.6ms 4.7MB 1463ms 0ms g++ 11.4.0
rust 3-im.rs 394ms 5.6ms 6.0MB 1513ms 0ms rustc 1.83.0
cpp 1-im.cpp 396ms 27ms 8.0MB 1473ms 3ms clang++ 14.0.0-1ubuntu1.1
rust 5-m.rs 538ms 7.1ms 4.0MB 2067ms 0ms rustc 1.83.0
rust 2-im.rs 597ms 11ms 4.0MB 2270ms 0ms rustc 1.83.0
rust 1-m.rs 928ms 3.9ms 4.0MB 3580ms 3ms rustc 1.83.0
rust 3-i.rs 1420ms 7.0ms 1.9MB 1410ms 0ms rustc 1.83.0
rust 2-i.rs 1659ms 11ms 1.8MB 1647ms 0ms rustc 1.83.0
rust 1.rs 2517ms 13ms 1.8MB 2507ms 0ms rustc 1.83.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 1.2ms 4.0MB 120ms 0ms rustc 1.83.0
cpp 1-im.cpp 40ms 0.7ms 7.9MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 40ms 0.7ms 4.5MB 133ms 0ms g++ 11.4.0
rust 5-m.rs 53ms 1.3ms 6.0MB 160ms 0ms rustc 1.83.0
rust 2-im.rs 60ms 1.7ms 4.0MB 193ms 0ms rustc 1.83.0
rust 1-m.rs 87ms 2.7ms 6.0MB 293ms 0ms rustc 1.83.0
rust 3-i.rs 121ms 4.1ms 1.9MB 113ms 0ms rustc 1.83.0
rust 2-i.rs 144ms 3.2ms 1.8MB 133ms 0ms rustc 1.83.0
rust 1.rs 218ms 6.6ms 1.8MB 207ms 0ms rustc 1.83.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 85ms 1.4ms 4.8MB 237ms 0ms rustc 1.83.0
rust 5-m.rs 92ms 2.4ms 4.8MB 300ms 0ms rustc 1.83.0
rust 1c.rs 156ms 3.7ms 1.9MB 147ms 0ms rustc 1.83.0
rust 1.rs 189ms 6.0ms 1.9MB 177ms 0ms rustc 1.83.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 15ms 0.7ms 4.8MB 23ms 0ms rustc 1.83.0
rust 5-m.rs 16ms 0.1ms 4.8MB 27ms 0ms rustc 1.83.0
rust 1c.rs 18ms 0.1ms 1.9MB 10ms 0ms rustc 1.83.0
rust 1.rs 21ms 0.3ms 1.9MB 10ms 0ms rustc 1.83.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 282ms 67ms 43.7MB 103ms 310ms rustc 1.83.0
rust 2-http2.rs 292ms 25ms 60.6MB 500ms 323ms rustc 1.83.0
rust 1-http2.rs 355ms 58ms 65.7MB 527ms 487ms rustc 1.83.0
rust 2-m.rs 469ms 97ms 86.4MB 190ms 743ms rustc 1.83.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 76ms 20ms 15.8MB 10ms 63ms rustc 1.83.0
rust 2-m.rs 122ms 11ms 36.6MB 37ms 163ms rustc 1.83.0
rust 2-http2.rs 221ms 15ms 31.7MB 437ms 157ms rustc 1.83.0
rust 1-http2.rs 271ms 53ms 37.3MB 633ms 197ms rustc 1.83.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 27ms 1.7ms 9.8MB 17ms 0ms rustc 1.83.0
rust 4-i.rs 30ms 1.6ms 7.8MB 20ms 0ms rustc 1.83.0
rust 3.rs 59ms 1.5ms 33.6MB 40ms 7ms rustc 1.83.0
rust 2.rs 59ms 0.6ms 35.5MB 37ms 10ms rustc 1.83.0
rust 1.rs 101ms 3.7ms 69.3MB 63ms 23ms rustc 1.83.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 197ms 1.3ms 53.3MB 180ms 3ms rustc 1.83.0
rust 4-i.rs 253ms 1.0ms 53.6MB 203ms 37ms rustc 1.83.0
rust 3.rs 386ms 6.4ms 238.2MB 290ms 83ms rustc 1.83.0
rust 2.rs 391ms 1.5ms 237.7MB 287ms 93ms rustc 1.83.0
rust 1.rs 656ms 1.8ms 551.0MB 387ms 257ms rustc 1.83.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 228ms 4.6ms 30.5MB 650ms 10ms rustc 1.83.0
rust 8.rs 472ms 16ms 23.8MB 447ms 10ms rustc 1.83.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 30ms 2.5ms 15.8MB 53ms 0ms rustc 1.83.0
rust 8.rs 58ms 2.1ms 11.5MB 43ms 0ms rustc 1.83.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 34ms 1.7ms 1.9MB 23ms 0ms rustc 1.83.0
rust 1.rs 46ms 4.3ms 2.0MB 33ms 0ms rustc 1.83.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 141ms 8.2ms 1.9MB 133ms 0ms rustc 1.83.0
rust 1.rs 170ms 7.7ms 2.0MB 157ms 0ms rustc 1.83.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 23ms 0.5ms 1.9MB 10ms 0ms rustc 1.83.0
rust 1.rs 28ms 1.9ms 1.9MB 17ms 0ms rustc 1.83.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 657ms 8.6ms 33.8MB 637ms 3ms rustc 1.83.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 145ms 2.9ms 9.8MB 133ms 0ms rustc 1.83.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 277ms 3.8ms 40.9MB 267ms 0ms rustc 1.83.0
rust 2.rs 307ms 3.2ms 6.7MB 290ms 0ms rustc 1.83.0
cpp 1.cpp 463ms 15ms 7.3MB 447ms 0ms g++ 11.4.0
cpp 1.cpp 499ms 2.6ms 7.7MB 487ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 59ms 0.6ms 11.6MB 47ms 0ms rustc 1.83.0
rust 2.rs 75ms 0.2ms 2.9MB 70ms 0ms rustc 1.83.0
cpp 1.cpp 113ms 2.5ms 3.6MB 100ms 0ms g++ 11.4.0
cpp 1.cpp 125ms 0.9ms 4.0MB 113ms 0ms clang++ 14.0.0-1ubuntu1.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1461ms 11ms 2.7MB 1253ms 183ms rustc 1.83.0
rust 2.rs 1636ms 13ms 2.8MB 1527ms 93ms rustc 1.83.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 306ms 1.7ms 2.4MB 283ms 3ms rustc 1.83.0
rust 2.rs 367ms 5.1ms 2.5MB 353ms 0ms rustc 1.83.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 434ms 9.7ms 80.4MB 450ms 17ms rustc 1.83.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 48ms 0.4ms 11.4MB 40ms 3ms rustc 1.83.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 113ms 1.2ms 1.9MB 100ms 0ms rustc 1.83.0
rust 1.rs 1337ms 7.5ms 1.9MB 1330ms 0ms rustc 1.83.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 31ms 0.6ms 1.8MB 20ms 0ms rustc 1.83.0
rust 1.rs 345ms 5.2ms 1.9MB 333ms 0ms rustc 1.83.0