Rust VS C++ benchmarks

Current benchmark data was generated on Thu Sep 22 2022, 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 179ms 1.2ms 1.2MB 320ms 0ms rustc 1.66.0-nightly
rust 5-m.rs 205ms 1.4ms 1.3MB 370ms 0ms rustc 1.64.0
rust 1c.rs 231ms 0.9ms 0.7MB 220ms 0ms rustc 1.66.0-nightly
rust 1.rs 315ms 0.4ms 0.6MB 303ms 0ms rustc 1.64.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1c.rs 28ms 1.5ms 0.7MB 10ms 0ms rustc 1.66.0-nightly
rust 5-m.rs 29ms 0.4ms 1.3MB 40ms 0ms rustc 1.64.0
rust 5c-m.rs 30ms 1.4ms 1.3MB 33ms 0ms rustc 1.66.0-nightly
rust 1.rs 34ms 0.2ms 0.6MB 23ms 0ms rustc 1.64.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.7ms 0.2ms 1.1MB 0ms 0ms clang++ 11.0.0
rust 1.rs 1.7ms 0.6ms 0.6MB 0ms 0ms rustc 1.66.0-nightly
rust 1.rs 1.7ms 0.6ms 0.6MB 0ms 0ms rustc 1.64.0
cpp 1.cpp 1.7ms 0.4ms 1.0MB 0ms 0ms g++ 12.2.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 414ms 0.4ms 5.0MB 400ms 0ms rustc 1.66.0-nightly
rust 8.rs 581ms 0.1ms 5.0MB 563ms 0ms rustc 1.64.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 20ms 0.2ms 0.6MB 10ms 0ms rustc 1.66.0-nightly
rust 8.rs 27ms 0.6ms 0.6MB 20ms 0ms rustc 1.64.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 225ms 0.4ms 1.0MB 210ms 0ms g++ 12.2.0
rust 4-i.rs 252ms 0.0ms 0.6MB 240ms 0ms rustc 1.64.0
cpp 0-i.cpp 258ms 0.9ms 1.1MB 243ms 0ms clang++ 11.0.0
rust 7-i.rs 305ms 0.6ms 0.6MB 297ms 0ms rustc 1.64.0
rust 3.rs 339ms 0.4ms 0.7MB 330ms 0ms rustc 1.66.0-nightly
cpp 1.cpp 339ms 0.5ms 1.0MB 330ms 0ms g++ 12.2.0
rust 2.rs 345ms 1.7ms 0.6MB 333ms 0ms rustc 1.64.0
cpp 1.cpp 385ms 0.9ms 1.1MB 373ms 0ms clang++ 11.0.0
rust 1.rs 387ms 6.1ms 0.6MB 373ms 0ms rustc 1.64.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 25ms 0.3ms 1.0MB 17ms 0ms g++ 12.2.0
rust 4-i.rs 28ms 0.2ms 0.6MB 20ms 0ms rustc 1.64.0
cpp 0-i.cpp 28ms 0.2ms 1.1MB 20ms 0ms clang++ 11.0.0
rust 7-i.rs 34ms 1.1ms 0.6MB 23ms 0ms rustc 1.64.0
rust 3.rs 36ms 0.4ms 0.6MB 30ms 0ms rustc 1.66.0-nightly
rust 2.rs 37ms 0.5ms 0.6MB 27ms 0ms rustc 1.64.0
cpp 1.cpp 38ms 0.9ms 0.9MB 30ms 0ms g++ 12.2.0
rust 1.rs 41ms 0.7ms 0.6MB 30ms 0ms rustc 1.64.0
cpp 1.cpp 42ms 1.4ms 1.1MB 30ms 0ms clang++ 11.0.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 7-m.cpp 1060ms 3.2ms 3.2MB 2073ms 0ms clang++ 11.0.0
cpp 8-m.cpp 1062ms 3.4ms 3.1MB 2077ms 0ms clang++ 11.0.0
cpp 7-m.cpp 1063ms 1.9ms 0.9MB 2083ms 0ms g++ 12.2.0
rust 8-m.rs 1065ms 2.8ms 2.6MB 2060ms 0ms rustc 1.66.0-nightly
rust 7-m.rs 1066ms 4.5ms 2.2MB 2060ms 0ms rustc 1.64.0
cpp 8-m.cpp 1067ms 6.3ms 1.0MB 2083ms 0ms g++ 12.2.0
rust 8.rs 2063ms 3.3ms 2.5MB 2050ms 0ms rustc 1.66.0-nightly
rust 7.rs 2065ms 5.3ms 2.0MB 2050ms 0ms rustc 1.64.0
rust 2-m.rs 2151ms 4.0ms 2.1MB 4187ms 0ms rustc 1.64.0
cpp 6-im.cpp 2241ms 18ms 0.9MB 4397ms 0ms g++ 12.2.0
cpp 6-im.cpp 2244ms 14ms 3.2MB 4407ms 0ms clang++ 11.0.0
rust 2.rs timeout 0.0ms 0.0MB 0ms 0ms rustc 1.64.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 275ms 0.4ms 0.7MB 507ms 3ms rustc 1.64.0
cpp 7-m.cpp 275ms 1.6ms 3.2MB 520ms 0ms clang++ 11.0.0
cpp 7-m.cpp 276ms 0.6ms 0.9MB 520ms 0ms g++ 12.2.0
cpp 8-m.cpp 276ms 3.4ms 3.2MB 520ms 0ms clang++ 11.0.0
cpp 8-m.cpp 277ms 0.5ms 0.9MB 523ms 0ms g++ 12.2.0
rust 8-m.rs 277ms 2.7ms 2.4MB 510ms 0ms rustc 1.66.0-nightly
rust 7.rs 517ms 0.3ms 0.6MB 507ms 0ms rustc 1.64.0
rust 8.rs 518ms 0.1ms 2.2MB 510ms 0ms rustc 1.66.0-nightly
rust 2-m.rs 545ms 0.6ms 2.1MB 1040ms 0ms rustc 1.64.0
cpp 6-im.cpp 568ms 2.5ms 3.2MB 1100ms 0ms clang++ 11.0.0
cpp 6-im.cpp 570ms 2.4ms 0.9MB 1100ms 0ms g++ 12.2.0
rust 2.rs 1707ms 1.1ms 0.6MB 1697ms 0ms rustc 1.64.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 75ms 1.2ms 2.1MB 130ms 0ms rustc 1.64.0
cpp 8-m.cpp 76ms 1.1ms 0.9MB 127ms 0ms g++ 12.2.0
rust 8-m.rs 77ms 3.5ms 2.2MB 123ms 0ms rustc 1.66.0-nightly
cpp 8-m.cpp 77ms 2.8ms 3.2MB 130ms 0ms clang++ 11.0.0
cpp 7-m.cpp 77ms 1.9ms 3.2MB 127ms 0ms clang++ 11.0.0
cpp 7-m.cpp 79ms 2.3ms 1.0MB 133ms 0ms g++ 12.2.0
rust 8.rs 132ms 0.8ms 2.1MB 120ms 0ms rustc 1.66.0-nightly
rust 7.rs 132ms 0.8ms 0.6MB 120ms 0ms rustc 1.64.0
rust 2-m.rs 145ms 1.3ms 0.7MB 257ms 0ms rustc 1.64.0
cpp 6-im.cpp 151ms 0.5ms 3.2MB 273ms 0ms clang++ 11.0.0
cpp 6-im.cpp 151ms 1.5ms 0.9MB 277ms 0ms g++ 12.2.0
rust 2.rs 429ms 0.2ms 0.6MB 420ms 0ms rustc 1.64.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1550ms 7.8ms 33.7MB 1523ms 10ms rustc 1.64.0
rust 5.rs 1712ms 13ms 33.8MB 1693ms 0ms rustc 1.64.0
rust 3.rs 1852ms 32ms 49.8MB 1823ms 10ms rustc 1.64.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 143ms 3.4ms 5.7MB 130ms 0ms rustc 1.64.0
rust 5.rs 155ms 1.4ms 5.7MB 147ms 0ms rustc 1.64.0
rust 3.rs 163ms 3.1ms 7.7MB 147ms 0ms rustc 1.64.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 915ms 116ms 5.2MB 1747ms 30ms rustc 1.64.0
rust 3-m.rs 935ms 70ms 6.3MB 1773ms 27ms rustc 1.64.0
rust 3.rs 1829ms 16ms 6.5MB 1780ms 30ms rustc 1.64.0
rust 1-m.rs 2570ms 16ms 5.2MB 4930ms 123ms rustc 1.64.0
rust 4.rs 3185ms 4.4ms 4.4MB 3170ms 0ms rustc 1.64.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 72ms 4.5ms 2.9MB 113ms 3ms rustc 1.64.0
rust 5-m.rs 93ms 16ms 3.0MB 153ms 7ms rustc 1.64.0
rust 3.rs 117ms 0.7ms 3.1MB 107ms 0ms rustc 1.64.0
rust 1-m.rs 192ms 1.5ms 2.9MB 327ms 27ms rustc 1.64.0
rust 4.rs 210ms 0.6ms 2.6MB 197ms 0ms rustc 1.64.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 146ms 0.9ms 3.7MB 140ms 0ms rustc 1.64.0
rust 2.rs 599ms 0.4ms 4.1MB 587ms 0ms rustc 1.64.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 41ms 0.2ms 3.0MB 30ms 0ms rustc 1.64.0
rust 2.rs 114ms 1.3ms 3.3MB 100ms 0ms rustc 1.64.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 738ms 20ms 0.7MB 1410ms 0ms rustc 1.64.0
cpp 1-im.cpp 753ms 2.9ms 1.0MB 1457ms 0ms g++ 12.2.0
cpp 1-im.cpp 776ms 3.5ms 3.6MB 1510ms 0ms clang++ 11.0.0
rust 2-im.rs 1077ms 9.7ms 0.7MB 2073ms 0ms rustc 1.64.0
rust 5-m.rs 1228ms 11ms 0.7MB 2377ms 0ms rustc 1.64.0
rust 3-i.rs 1374ms 0.6ms 0.6MB 1363ms 0ms rustc 1.64.0
rust 1-m.rs 1946ms 14ms 0.6MB 3797ms 0ms rustc 1.64.0
rust 2-i.rs 1997ms 1.5ms 0.6MB 1987ms 0ms rustc 1.64.0
rust 1.rs 3938ms 225ms 0.6MB 3927ms 0ms rustc 1.64.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 67ms 0.8ms 0.7MB 110ms 0ms rustc 1.64.0
cpp 1-im.cpp 72ms 2.0ms 1.0MB 123ms 0ms g++ 12.2.0
cpp 1-im.cpp 72ms 0.4ms 3.6MB 120ms 0ms clang++ 11.0.0
rust 2-im.rs 97ms 0.1ms 0.7MB 160ms 0ms rustc 1.64.0
rust 3-i.rs 117ms 0.5ms 0.6MB 110ms 0ms rustc 1.64.0
rust 5-m.rs 118ms 12ms 0.7MB 190ms 0ms rustc 1.64.0
rust 2-i.rs 167ms 0.3ms 0.6MB 160ms 0ms rustc 1.64.0
rust 1-m.rs 177ms 2.0ms 0.7MB 310ms 0ms rustc 1.64.0
rust 1.rs 322ms 0.2ms 0.6MB 310ms 0ms rustc 1.64.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 132ms 13ms 20.4MB 80ms 80ms rustc 1.64.0
rust 2-http2.rs 321ms 53ms 49.8MB 420ms 113ms rustc 1.64.0
rust 2-m.rs 492ms 1.1ms 116.3MB 307ms 447ms rustc 1.64.0
rust 1-http2.rs 882ms 136ms 97.1MB 1097ms 433ms rustc 1.64.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 63ms 9.8ms 18.2MB 17ms 27ms rustc 1.64.0
rust 2.rs 132ms 4.8ms 28.9MB 47ms 73ms rustc 1.64.0
rust 2-http2.rs 347ms 13ms 28.5MB 520ms 87ms rustc 1.64.0
rust 1-http2.rs 369ms 48ms 30.6MB 470ms 110ms rustc 1.64.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 77ms 0.2ms 36.3MB 50ms 13ms rustc 1.64.0
rust 2.rs 78ms 1.5ms 38.0MB 57ms 3ms rustc 1.64.0
rust 1.rs 121ms 0.4ms 75.5MB 80ms 27ms rustc 1.64.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 504ms 0.8ms 257.9MB 393ms 97ms rustc 1.64.0
rust 2.rs 514ms 6.0ms 258.6MB 403ms 93ms rustc 1.64.0
rust 1.rs 872ms 21ms 605.7MB 650ms 207ms rustc 1.64.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 337ms 3.4ms 28.7MB 610ms 3ms rustc 1.64.0
rust 8.rs 592ms 4.2ms 24.0MB 577ms 3ms rustc 1.64.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 48ms 3.5ms 15.4MB 63ms 3ms rustc 1.64.0
rust 8.rs 76ms 0.2ms 11.5MB 57ms 3ms rustc 1.64.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 58ms 2.1ms 0.6MB 50ms 0ms rustc 1.64.0
rust 1.rs 78ms 8.4ms 2.0MB 67ms 0ms rustc 1.64.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 202ms 7.7ms 0.6MB 193ms 0ms rustc 1.64.0
rust 1.rs 333ms 16ms 2.2MB 323ms 0ms rustc 1.64.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 37ms 0.5ms 0.6MB 23ms 0ms rustc 1.64.0
rust 1.rs 46ms 2.0ms 0.6MB 37ms 0ms rustc 1.64.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 896ms 7.1ms 33.9MB 873ms 7ms rustc 1.64.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 186ms 1.0ms 9.8MB 170ms 0ms rustc 1.64.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 415ms 0.6ms 7.4MB 403ms 0ms clang++ 11.0.0
rust 2.rs 462ms 2.0ms 6.6MB 450ms 0ms rustc 1.64.0
cpp 1.cpp 645ms 1.5ms 7.7MB 630ms 0ms g++ 12.2.0
rust 1.rs 847ms 5.7ms 40.8MB 820ms 7ms rustc 1.64.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 94ms 1.0ms 3.8MB 87ms 0ms clang++ 11.0.0
rust 2.rs 106ms 0.5ms 3.2MB 93ms 0ms rustc 1.64.0
rust 1.rs 130ms 1.7ms 11.7MB 117ms 0ms rustc 1.64.0
cpp 1.cpp 155ms 3.0ms 4.1MB 140ms 0ms g++ 12.2.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 1838ms 1.3ms 2.9MB 1770ms 50ms rustc 1.64.0
rust 1.rs 1854ms 1.9ms 2.8MB 1703ms 137ms rustc 1.64.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 395ms 3.1ms 2.5MB 373ms 7ms rustc 1.64.0
rust 2.rs 410ms 0.3ms 2.6MB 397ms 0ms rustc 1.64.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 566ms 3.5ms 77.9MB 710ms 20ms rustc 1.64.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 64ms 2.4ms 11.7MB 73ms 0ms rustc 1.64.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 147ms 3.4ms 0.7MB 133ms 0ms rustc 1.64.0
rust 1.rs 1902ms 3.6ms 0.7MB 1890ms 0ms rustc 1.64.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 39ms 0.6ms 0.7MB 30ms 0ms rustc 1.64.0
rust 1.rs 478ms 3.9ms 0.6MB 460ms 0ms rustc 1.64.0