Rust VS C++ benchmarks

Current benchmark data was generated on Sun Jan 29 2023, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz (Model 106)

* -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.)

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 183ms 2.8ms 1.7MB 327ms 0ms rustc 1.69.0-nightly
rust 5-m.rs 195ms 1.0ms 1.7MB 350ms 0ms rustc 1.67.0
rust 1c.rs 230ms 0.3ms 1.1MB 217ms 0ms rustc 1.69.0-nightly
rust 1.rs 314ms 0.7ms 1.1MB 300ms 0ms rustc 1.67.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 25ms 1.1ms 1.7MB 30ms 0ms rustc 1.69.0-nightly
rust 1c.rs 26ms 0.6ms 1.1MB 13ms 0ms rustc 1.69.0-nightly
rust 5-m.rs 29ms 1.4ms 1.6MB 30ms 3ms rustc 1.67.0
rust 1.rs 34ms 0.8ms 1.0MB 20ms 0ms rustc 1.67.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1.2ms 0.1ms 1.1MB 0ms 0ms rustc 1.69.0-nightly
rust 1.rs 1.5ms 0.4ms 1.9MB 0ms 0ms rustc 1.67.0
cpp 1.cpp 1.7ms 0.4ms 1.3MB 0ms 0ms g++ 12.2.0
cpp 1.cpp 1.9ms 0.6ms 1.4MB 0ms 0ms clang++ 14.0.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 414ms 0.7ms 4.6MB 400ms 0ms rustc 1.69.0-nightly
rust 8.rs 493ms 0.3ms 5.0MB 480ms 0ms rustc 1.67.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 20ms 1.1ms 1.0MB 10ms 0ms rustc 1.69.0-nightly
rust 8.rs 23ms 0.1ms 1.1MB 17ms 0ms rustc 1.67.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 225ms 0.6ms 1.3MB 210ms 0ms g++ 12.2.0
cpp 0-i.cpp 253ms 0.3ms 1.4MB 240ms 0ms clang++ 14.0.0
rust 4-i.rs 260ms 6.4ms 1.1MB 253ms 0ms rustc 1.67.0
rust 7-i.rs 321ms 0.6ms 1.0MB 310ms 0ms rustc 1.67.0
cpp 1.cpp 327ms 1.4ms 1.4MB 313ms 0ms clang++ 14.0.0
rust 3.rs 338ms 0.4ms 1.0MB 330ms 0ms rustc 1.69.0-nightly
cpp 1.cpp 341ms 0.6ms 1.3MB 330ms 0ms g++ 12.2.0
rust 2.rs 346ms 4.5ms 1.0MB 337ms 0ms rustc 1.67.0
rust 1.rs 390ms 6.7ms 1.1MB 380ms 0ms rustc 1.67.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 25ms 0.7ms 1.3MB 13ms 0ms g++ 12.2.0
rust 4-i.rs 28ms 0.7ms 1.9MB 20ms 0ms rustc 1.67.0
cpp 0-i.cpp 28ms 0.5ms 1.4MB 20ms 0ms clang++ 14.0.0
rust 7-i.rs 34ms 0.1ms 1.0MB 23ms 0ms rustc 1.67.0
cpp 1.cpp 35ms 0.3ms 1.4MB 23ms 0ms clang++ 14.0.0
rust 2.rs 37ms 0.4ms 1.0MB 27ms 0ms rustc 1.67.0
rust 3.rs 37ms 0.6ms 1.1MB 23ms 0ms rustc 1.69.0-nightly
cpp 1.cpp 38ms 2.9ms 1.3MB 30ms 0ms g++ 12.2.0
rust 1.rs 41ms 0.0ms 1.0MB 30ms 0ms rustc 1.67.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 1059ms 1.1ms 3.3MB 2070ms 3ms clang++ 14.0.0
rust 8-m.rs 1062ms 9.9ms 2.6MB 2050ms 0ms rustc 1.69.0-nightly
cpp 7-m.cpp 1063ms 0.2ms 3.4MB 2077ms 0ms clang++ 14.0.0
cpp 7-m.cpp 1064ms 4.4ms 1.4MB 2083ms 0ms g++ 12.2.0
cpp 8-m.cpp 1066ms 1.8ms 1.3MB 2083ms 0ms g++ 12.2.0
rust 7-m.rs 1066ms 14ms 2.3MB 2050ms 0ms rustc 1.67.0
rust 8.rs 2060ms 0.7ms 2.3MB 2050ms 0ms rustc 1.69.0-nightly
rust 7.rs 2061ms 0.6ms 2.2MB 2050ms 0ms rustc 1.67.0
rust 2-m.rs 2154ms 3.3ms 2.3MB 4197ms 0ms rustc 1.67.0
cpp 6-im.cpp 2222ms 12ms 3.3MB 4360ms 3ms clang++ 14.0.0
cpp 6-im.cpp 2236ms 14ms 1.3MB 4390ms 3ms g++ 12.2.0
rust 2.rs timeout 0.0ms 2.2MB 4990ms 0ms rustc 1.67.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 274ms 1.6ms 2.2MB 507ms 0ms rustc 1.69.0-nightly
rust 7-m.rs 274ms 1.2ms 1.1MB 510ms 0ms rustc 1.67.0
cpp 8-m.cpp 275ms 0.8ms 1.3MB 520ms 0ms g++ 12.2.0
cpp 8-m.cpp 275ms 1.2ms 3.3MB 517ms 0ms clang++ 14.0.0
cpp 7-m.cpp 276ms 1.6ms 3.3MB 520ms 0ms clang++ 14.0.0
cpp 7-m.cpp 276ms 1.2ms 1.4MB 520ms 0ms g++ 12.2.0
rust 8.rs 517ms 0.3ms 2.1MB 510ms 0ms rustc 1.69.0-nightly
rust 7.rs 517ms 0.5ms 1.0MB 510ms 0ms rustc 1.67.0
rust 2-m.rs 555ms 0.7ms 2.2MB 1053ms 3ms rustc 1.67.0
cpp 6-im.cpp 565ms 2.3ms 1.3MB 1087ms 0ms g++ 12.2.0
cpp 6-im.cpp 574ms 22ms 3.3MB 1100ms 0ms clang++ 14.0.0
rust 2.rs 1729ms 1.3ms 1.0MB 1720ms 0ms rustc 1.67.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 74ms 0.9ms 1.0MB 127ms 0ms rustc 1.69.0-nightly
rust 7-m.rs 74ms 1.0ms 1.0MB 120ms 0ms rustc 1.67.0
cpp 7-m.cpp 76ms 1.3ms 3.3MB 130ms 0ms clang++ 14.0.0
cpp 7-m.cpp 77ms 1.8ms 1.4MB 130ms 0ms g++ 12.2.0
cpp 8-m.cpp 77ms 1.6ms 3.3MB 130ms 0ms clang++ 14.0.0
cpp 8-m.cpp 79ms 2.0ms 1.4MB 130ms 0ms g++ 12.2.0
rust 7.rs 131ms 0.7ms 1.0MB 120ms 0ms rustc 1.67.0
rust 8.rs 132ms 0.6ms 1.1MB 120ms 0ms rustc 1.69.0-nightly
rust 2-m.rs 144ms 1.3ms 1.0MB 257ms 0ms rustc 1.67.0
cpp 6-im.cpp 150ms 2.7ms 3.4MB 273ms 0ms clang++ 14.0.0
cpp 6-im.cpp 150ms 1.0ms 1.3MB 273ms 0ms g++ 12.2.0
rust 2.rs 435ms 0.7ms 1.0MB 423ms 0ms rustc 1.67.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1635ms 10ms 33.8MB 1610ms 10ms rustc 1.67.0
rust 5.rs 1718ms 6.1ms 33.8MB 1703ms 3ms rustc 1.67.0
rust 3.rs 1920ms 24ms 49.8MB 1890ms 10ms rustc 1.67.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 150ms 1.2ms 5.9MB 140ms 0ms rustc 1.67.0
rust 5.rs 155ms 1.0ms 5.7MB 143ms 0ms rustc 1.67.0
rust 3.rs 174ms 2.4ms 7.8MB 160ms 0ms rustc 1.67.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 861ms 84ms 4.9MB 1647ms 23ms rustc 1.67.0
rust 3-m.rs 941ms 43ms 6.2MB 1803ms 27ms rustc 1.67.0
rust 3.rs 1837ms 9.0ms 6.2MB 1787ms 37ms rustc 1.67.0
rust 1-m.rs 2866ms 68ms 4.9MB 5527ms 110ms rustc 1.67.0
rust 4.rs 3200ms 7.8ms 4.3MB 3183ms 0ms rustc 1.67.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 73ms 2.7ms 2.8MB 120ms 3ms rustc 1.67.0
rust 5-m.rs 106ms 4.2ms 2.7MB 183ms 0ms rustc 1.67.0
rust 3.rs 119ms 0.8ms 3.1MB 110ms 0ms rustc 1.67.0
rust 1-m.rs 201ms 4.7ms 2.9MB 357ms 13ms rustc 1.67.0
rust 4.rs 209ms 0.5ms 2.4MB 197ms 0ms rustc 1.67.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 145ms 0.3ms 3.6MB 137ms 0ms rustc 1.67.0
rust 2.rs 601ms 3.4ms 3.8MB 590ms 0ms rustc 1.67.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 42ms 2.6ms 2.8MB 30ms 0ms rustc 1.67.0
rust 2.rs 112ms 0.2ms 3.2MB 97ms 0ms rustc 1.67.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 711ms 12ms 2.0MB 1380ms 0ms rustc 1.67.0
cpp 1-im.cpp 757ms 6.8ms 1.3MB 1457ms 0ms g++ 12.2.0
cpp 1-im.cpp 770ms 13ms 3.9MB 1493ms 0ms clang++ 14.0.0
rust 2-im.rs 1052ms 9.6ms 1.0MB 2023ms 0ms rustc 1.67.0
rust 3-i.rs 1427ms 5.3ms 1.1MB 1413ms 0ms rustc 1.67.0
rust 5-m.rs 1519ms 321ms 1.0MB 2770ms 0ms rustc 1.67.0
rust 1-m.rs 1985ms 22ms 1.0MB 3853ms 0ms rustc 1.67.0
rust 2-i.rs 2046ms 0.5ms 1.0MB 2037ms 0ms rustc 1.67.0
rust 1.rs 3700ms 6.2ms 1.1MB 3687ms 0ms rustc 1.67.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 64ms 0.1ms 1.0MB 110ms 0ms rustc 1.67.0
cpp 1-im.cpp 71ms 0.7ms 1.3MB 120ms 0ms g++ 12.2.0
cpp 1-im.cpp 72ms 0.8ms 5.9MB 123ms 0ms clang++ 14.0.0
rust 2-im.rs 94ms 2.6ms 1.0MB 160ms 0ms rustc 1.67.0
rust 3-i.rs 118ms 0.1ms 1.0MB 110ms 0ms rustc 1.67.0
rust 5-m.rs 150ms 10.0ms 1.0MB 267ms 0ms rustc 1.67.0
rust 2-i.rs 171ms 0.4ms 1.0MB 160ms 0ms rustc 1.67.0
rust 1-m.rs 179ms 8.7ms 1.1MB 327ms 0ms rustc 1.67.0
rust 1.rs 312ms 4.8ms 1.1MB 303ms 0ms rustc 1.67.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 127ms 30ms 23.5MB 67ms 73ms rustc 1.67.0
rust 2-http2.rs 325ms 78ms 37.6MB 437ms 113ms rustc 1.67.0
rust 2.rs 485ms 8.3ms 103.8MB 247ms 470ms rustc 1.67.0
rust 1-http2.rs 776ms 67ms 70.4MB 923ms 380ms rustc 1.67.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 62ms 14ms 13.0MB 17ms 13ms rustc 1.67.0
rust 2.rs 132ms 6.6ms 24.7MB 37ms 80ms rustc 1.67.0
rust 2-http2.rs 311ms 49ms 25.0MB 450ms 83ms rustc 1.67.0
rust 1-http2.rs 411ms 7.0ms 26.7MB 640ms 100ms rustc 1.67.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 75ms 0.2ms 38.1MB 53ms 7ms rustc 1.67.0
rust 3.rs 76ms 2.1ms 36.3MB 57ms 3ms rustc 1.67.0
rust 1.rs 120ms 0.3ms 75.4MB 73ms 30ms rustc 1.67.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 499ms 1.2ms 257.2MB 403ms 83ms rustc 1.67.0
rust 3.rs 505ms 3.3ms 258.2MB 390ms 100ms rustc 1.67.0
rust 1.rs 861ms 1.4ms 605.2MB 600ms 243ms rustc 1.67.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 320ms 3.2ms 29.2MB 560ms 3ms rustc 1.67.0
rust 8.rs 595ms 3.2ms 24.0MB 577ms 0ms rustc 1.67.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 47ms 3.1ms 16.4MB 57ms 3ms rustc 1.67.0
rust 8.rs 76ms 3.3ms 11.5MB 60ms 3ms rustc 1.67.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 63ms 4.6ms 2.1MB 53ms 0ms rustc 1.67.0
rust 1.rs 71ms 0.5ms 1.0MB 60ms 0ms rustc 1.67.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 207ms 8.4ms 1.1MB 193ms 0ms rustc 1.67.0
rust 1.rs 297ms 1.9ms 1.1MB 287ms 0ms rustc 1.67.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 37ms 3.5ms 1.0MB 27ms 0ms rustc 1.67.0
rust 1.rs 48ms 0.7ms 1.0MB 40ms 0ms rustc 1.67.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 941ms 3.4ms 33.8MB 923ms 3ms rustc 1.67.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 195ms 1.2ms 9.9MB 183ms 0ms rustc 1.67.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 472ms 0.3ms 6.6MB 457ms 0ms rustc 1.67.0
cpp 1.cpp 641ms 0.7ms 7.6MB 627ms 0ms g++ 12.2.0
cpp 1.cpp 707ms 2.2ms 7.5MB 697ms 0ms clang++ 14.0.0
rust 1.rs 1083ms 41ms 40.8MB 1057ms 10ms rustc 1.67.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 109ms 0.7ms 3.1MB 100ms 0ms rustc 1.67.0
rust 1.rs 129ms 1.1ms 11.6MB 120ms 0ms rustc 1.67.0
cpp 1.cpp 153ms 0.2ms 3.9MB 140ms 0ms g++ 12.2.0
cpp 1.cpp 170ms 1.3ms 3.9MB 160ms 0ms clang++ 14.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 1746ms 0.9ms 2.9MB 1683ms 47ms rustc 1.67.0
rust 1.rs 1809ms 1.4ms 2.8MB 1637ms 157ms rustc 1.67.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 382ms 0.1ms 2.5MB 360ms 10ms rustc 1.67.0
rust 2.rs 390ms 0.5ms 2.5MB 377ms 0ms rustc 1.67.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 560ms 10ms 76.9MB 710ms 13ms rustc 1.67.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 64ms 3.0ms 11.8MB 70ms 0ms rustc 1.67.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 149ms 0.5ms 1.0MB 140ms 0ms rustc 1.67.0
rust 1.rs 1866ms 11ms 1.1MB 1853ms 0ms rustc 1.67.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 39ms 0.4ms 1.1MB 30ms 0ms rustc 1.67.0
rust 1.rs 470ms 9.3ms 1.1MB 460ms 0ms rustc 1.67.0