Programming Language and compiler
Benchmarks

Rust VS C++ benchmarks

Current benchmark data was generated on Thu Jul 13 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 185ms 2.2ms 1.7MB 327ms 0ms rustc 1.73.0-nightly
rust 5-m.rs 204ms 3.5ms 1.8MB 367ms 0ms rustc 1.70.0
rust 1c.rs 228ms 1.2ms 1.1MB 220ms 0ms rustc 1.73.0-nightly
rust 1.rs 316ms 1.6ms 1.0MB 297ms 3ms rustc 1.70.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1c.rs 26ms 1.1ms 1.1MB 20ms 0ms rustc 1.73.0-nightly
rust 5c-m.rs 26ms 0.8ms 1.7MB 30ms 0ms rustc 1.73.0-nightly
rust 5-m.rs 29ms 2.2ms 1.7MB 33ms 0ms rustc 1.70.0
rust 1.rs 33ms 0.2ms 1.0MB 27ms 0ms rustc 1.70.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.7ms 0.4ms 1.4MB 0ms 0ms clang++ 14.0.0
rust 1.rs 2.1ms 0.4ms 1.9MB 0ms 0ms rustc 1.73.0-nightly
cpp 1.cpp 2.1ms 0.9ms 1.0MB 0ms 0ms g++ 11.3.0
rust 1.rs 2.1ms 0.4ms 2.0MB 0ms 0ms rustc 1.70.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 412ms 1.0ms 4.9MB 400ms 0ms rustc 1.73.0-nightly
rust 8.rs 490ms 1.3ms 4.9MB 477ms 0ms rustc 1.70.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 19ms 0.1ms 1.1MB 10ms 0ms rustc 1.73.0-nightly
rust 8.rs 23ms 0.5ms 1.0MB 10ms 0ms rustc 1.70.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 225ms 1.3ms 1.0MB 220ms 0ms g++ 11.3.0
cpp 0-i.cpp 253ms 0.7ms 1.5MB 240ms 0ms clang++ 14.0.0
rust 4-i.rs 255ms 0.2ms 1.0MB 247ms 0ms rustc 1.70.0
rust 3.rs 321ms 0.4ms 1.0MB 310ms 0ms rustc 1.73.0-nightly
rust 7-i.rs 322ms 0.4ms 1.1MB 310ms 0ms rustc 1.70.0
cpp 1.cpp 327ms 1.0ms 1.4MB 317ms 0ms clang++ 14.0.0
rust 2.rs 332ms 2.6ms 1.0MB 323ms 0ms rustc 1.70.0
cpp 1.cpp 341ms 0.8ms 1.2MB 327ms 0ms g++ 11.3.0
rust 1.rs 390ms 4.6ms 1.1MB 377ms 0ms rustc 1.70.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 25ms 0.4ms 1.0MB 17ms 0ms g++ 11.3.0
rust 4-i.rs 28ms 0.2ms 1.1MB 20ms 0ms rustc 1.70.0
cpp 0-i.cpp 28ms 0.6ms 1.4MB 20ms 0ms clang++ 14.0.0
rust 7-i.rs 34ms 0.2ms 1.1MB 27ms 0ms rustc 1.70.0
rust 3.rs 35ms 1.1ms 1.0MB 23ms 0ms rustc 1.73.0-nightly
rust 2.rs 35ms 0.3ms 1.0MB 30ms 0ms rustc 1.70.0
cpp 1.cpp 35ms 0.8ms 1.5MB 25ms 0ms clang++ 14.0.0
cpp 1.cpp 37ms 0.6ms 1.3MB 27ms 0ms g++ 11.3.0
rust 1.rs 41ms 0.6ms 1.1MB 30ms 0ms rustc 1.70.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 1057ms 1.6ms 2.5MB 2053ms 0ms rustc 1.73.0-nightly
cpp 8-m.cpp 1057ms 1.1ms 3.3MB 2077ms 0ms clang++ 14.0.0
cpp 7-m.cpp 1059ms 0.7ms 2.3MB 2077ms 0ms g++ 11.3.0
cpp 7-m.cpp 1061ms 1.7ms 3.3MB 2070ms 0ms clang++ 14.0.0
cpp 8-m.cpp 1063ms 2.1ms 2.2MB 2080ms 0ms g++ 11.3.0
rust 7-m.rs 1469ms 5.7ms 2.2MB 2853ms 0ms rustc 1.70.0
rust 8.rs 2060ms 0.8ms 2.4MB 2047ms 0ms rustc 1.73.0-nightly
cpp 6-im.cpp 2221ms 26ms 3.3MB 4363ms 0ms clang++ 14.0.0
cpp 6-im.cpp 2251ms 15ms 2.2MB 4413ms 0ms g++ 11.3.0
rust 2-m.rs 2810ms 17ms 2.3MB 5467ms 10ms rustc 1.70.0
rust 7.rs 2956ms 3.2ms 1.0MB 2947ms 0ms rustc 1.70.0
rust 2.rs timeout 0.0ms 2.2MB 4990ms 0ms rustc 1.70.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 273ms 0.5ms 1.3MB 520ms 0ms g++ 11.3.0
cpp 8-m.cpp 274ms 0.5ms 3.3MB 520ms 0ms clang++ 14.0.0
cpp 7-m.cpp 274ms 2.3ms 1.3MB 523ms 0ms g++ 11.3.0
cpp 7-m.cpp 275ms 1.9ms 3.4MB 517ms 0ms clang++ 14.0.0
rust 8-m.rs 276ms 3.1ms 2.1MB 503ms 3ms rustc 1.73.0-nightly
rust 7-m.rs 376ms 1.4ms 1.0MB 710ms 0ms rustc 1.70.0
rust 8.rs 518ms 0.5ms 2.2MB 507ms 0ms rustc 1.73.0-nightly
cpp 6-im.cpp 564ms 3.8ms 3.4MB 1087ms 0ms clang++ 14.0.0
cpp 6-im.cpp 572ms 1.4ms 1.3MB 1107ms 0ms g++ 11.3.0
rust 2-m.rs 717ms 3.1ms 2.1MB 1367ms 3ms rustc 1.70.0
rust 7.rs 742ms 1.2ms 1.0MB 730ms 0ms rustc 1.70.0
rust 2.rs 1423ms 0.6ms 1.1MB 1410ms 0ms rustc 1.70.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 74ms 1.1ms 1.0MB 127ms 0ms rustc 1.73.0-nightly
cpp 8-m.cpp 75ms 0.5ms 3.3MB 127ms 0ms clang++ 14.0.0
cpp 7-m.cpp 75ms 0.8ms 3.5MB 127ms 0ms clang++ 14.0.0
cpp 8-m.cpp 75ms 0.6ms 1.3MB 127ms 0ms g++ 11.3.0
cpp 7-m.cpp 76ms 0.9ms 1.3MB 130ms 0ms g++ 11.3.0
rust 7-m.rs 102ms 1.8ms 1.0MB 170ms 0ms rustc 1.70.0
rust 8.rs 131ms 0.1ms 1.1MB 120ms 0ms rustc 1.73.0-nightly
cpp 6-im.cpp 150ms 0.9ms 5.2MB 270ms 0ms clang++ 14.0.0
cpp 6-im.cpp 152ms 2.2ms 1.3MB 280ms 0ms g++ 11.3.0
rust 2-m.rs 184ms 0.6ms 1.1MB 333ms 0ms rustc 1.70.0
rust 7.rs 188ms 1.0ms 1.1MB 177ms 0ms rustc 1.70.0
rust 2.rs 358ms 0.8ms 1.1MB 350ms 0ms rustc 1.70.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1642ms 2.2ms 33.8MB 1623ms 3ms rustc 1.70.0
rust 5.rs 1724ms 5.8ms 33.9MB 1697ms 10ms rustc 1.70.0
rust 3.rs 1918ms 21ms 49.9MB 1893ms 7ms rustc 1.70.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 148ms 0.5ms 5.6MB 140ms 0ms rustc 1.70.0
rust 5.rs 156ms 0.5ms 5.7MB 143ms 0ms rustc 1.70.0
rust 3.rs 174ms 0.5ms 7.9MB 160ms 0ms rustc 1.70.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 1526ms 487ms 5.5MB 2950ms 47ms rustc 1.70.0
rust 3.rs 1892ms 8.6ms 7.4MB 1837ms 37ms rustc 1.70.0
rust 3-m.rs 2420ms 212ms 7.2MB 4707ms 53ms rustc 1.70.0
rust 1-m.rs 2933ms 25ms 4.6MB 5687ms 90ms rustc 1.70.0
rust 4.rs 3210ms 10ms 4.3MB 3197ms 0ms rustc 1.70.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 80ms 7.5ms 3.5MB 137ms 3ms rustc 1.70.0
rust 5-m.rs 101ms 25ms 3.5MB 163ms 7ms rustc 1.70.0
rust 3.rs 121ms 1.0ms 3.9MB 110ms 0ms rustc 1.70.0
rust 4.rs 212ms 1.4ms 2.2MB 200ms 0ms rustc 1.70.0
rust 1-m.rs 214ms 2.2ms 2.8MB 380ms 17ms rustc 1.70.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 148ms 0.6ms 3.5MB 140ms 0ms rustc 1.70.0
rust 2.rs 597ms 0.6ms 3.8MB 580ms 3ms rustc 1.70.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 40ms 0.4ms 2.8MB 30ms 0ms rustc 1.70.0
rust 2.rs 112ms 0.2ms 3.1MB 100ms 0ms rustc 1.70.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 755ms 45ms 1.2MB 1417ms 0ms g++ 11.3.0
cpp 1-im.cpp 767ms 1.8ms 4.0MB 1490ms 0ms clang++ 14.0.0
rust 3-im.rs 805ms 10ms 1.1MB 1557ms 0ms rustc 1.70.0
rust 2-im.rs 1055ms 3.5ms 1.0MB 2027ms 0ms rustc 1.70.0
rust 5-m.rs 1197ms 13ms 1.1MB 2310ms 0ms rustc 1.70.0
rust 3-i.rs 1678ms 2.7ms 1.0MB 1667ms 0ms rustc 1.70.0
rust 1-m.rs 1980ms 32ms 1.1MB 3797ms 0ms rustc 1.70.0
rust 2-i.rs 2298ms 0.8ms 1.0MB 2290ms 0ms rustc 1.70.0
rust 1.rs 3718ms 31ms 1.0MB 3707ms 0ms rustc 1.70.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 71ms 2.2ms 1.2MB 120ms 0ms g++ 11.3.0
cpp 1-im.cpp 72ms 2.1ms 4.3MB 120ms 0ms clang++ 14.0.0
rust 3-im.rs 72ms 1.1ms 1.0MB 120ms 0ms rustc 1.70.0
rust 2-im.rs 95ms 0.5ms 1.0MB 160ms 0ms rustc 1.70.0
rust 5-m.rs 112ms 1.6ms 1.0MB 183ms 0ms rustc 1.70.0
rust 3-i.rs 140ms 0.4ms 1.0MB 130ms 0ms rustc 1.70.0
rust 1-m.rs 172ms 4.7ms 1.1MB 310ms 0ms rustc 1.70.0
rust 2-i.rs 195ms 0.7ms 1.0MB 183ms 0ms rustc 1.70.0
rust 1.rs 314ms 4.7ms 1.0MB 300ms 0ms rustc 1.70.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 222ms 15ms 48.5MB 100ms 140ms rustc 1.70.0
rust 2.rs 382ms 18ms 55.1MB 200ms 353ms rustc 1.70.0
rust 2-http2.rs 413ms 89ms 54.3MB 497ms 170ms rustc 1.70.0
rust 1-http2.rs 853ms 170ms 76.0MB 1097ms 400ms rustc 1.70.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 81ms 3.1ms 16.4MB 13ms 40ms rustc 1.70.0
rust 2.rs 125ms 9.5ms 25.9MB 37ms 73ms rustc 1.70.0
rust 2-http2.rs 275ms 67ms 31.4MB 347ms 80ms rustc 1.70.0
rust 1-http2.rs 339ms 80ms 27.2MB 447ms 80ms rustc 1.70.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 72ms 1.3ms 38.1MB 50ms 10ms rustc 1.70.0
rust 3.rs 75ms 1.6ms 36.1MB 50ms 13ms rustc 1.70.0
rust 1.rs 120ms 3.5ms 75.3MB 90ms 13ms rustc 1.70.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 495ms 0.8ms 258.3MB 393ms 80ms rustc 1.70.0
rust 3.rs 509ms 0.8ms 257.4MB 403ms 90ms rustc 1.70.0
rust 1.rs 872ms 0.3ms 606.1MB 627ms 230ms rustc 1.70.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 318ms 4.0ms 27.9MB 563ms 10ms rustc 1.70.0
rust 8.rs 548ms 0.9ms 23.7MB 530ms 7ms rustc 1.70.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 44ms 1.8ms 16.0MB 57ms 3ms rustc 1.70.0
rust 8.rs 71ms 1.1ms 11.4MB 57ms 0ms rustc 1.70.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 49ms 0.4ms 1.0MB 40ms 0ms rustc 1.70.0
rust 1.rs 69ms 0.8ms 1.0MB 57ms 0ms rustc 1.70.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 206ms 0.8ms 1.0MB 200ms 0ms rustc 1.70.0
rust 1.rs 290ms 0.2ms 1.0MB 280ms 0ms rustc 1.70.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 37ms 2.5ms 1.0MB 23ms 0ms rustc 1.70.0
rust 1.rs 46ms 0.4ms 1.0MB 40ms 0ms rustc 1.70.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 930ms 5.0ms 33.9MB 907ms 7ms rustc 1.70.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 195ms 2.3ms 9.9MB 183ms 0ms rustc 1.70.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 459ms 1.6ms 6.6MB 443ms 0ms rustc 1.70.0
rust 1.rs 519ms 15ms 40.9MB 497ms 7ms rustc 1.70.0
cpp 1.cpp 657ms 2.1ms 6.9MB 650ms 0ms g++ 11.3.0
cpp 1.cpp 718ms 8.5ms 7.5MB 703ms 0ms clang++ 14.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 102ms 1.2ms 3.1MB 90ms 0ms rustc 1.70.0
rust 1.rs 124ms 4.5ms 11.6MB 110ms 0ms rustc 1.70.0
cpp 1.cpp 153ms 0.2ms 3.5MB 140ms 0ms g++ 11.3.0
cpp 1.cpp 170ms 0.3ms 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 1748ms 0.4ms 2.8MB 1683ms 47ms rustc 1.70.0
rust 1.rs 1879ms 1.5ms 2.8MB 1703ms 163ms rustc 1.70.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 389ms 0.2ms 2.4MB 377ms 0ms rustc 1.70.0
rust 1.rs 399ms 0.5ms 2.5MB 380ms 3ms rustc 1.70.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 571ms 3.3ms 78.6MB 607ms 10ms rustc 1.70.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 64ms 2.1ms 12.5MB 60ms 0ms rustc 1.70.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 155ms 12ms 1.0MB 147ms 0ms rustc 1.70.0
rust 1.rs 1892ms 9.3ms 1.1MB 1877ms 0ms rustc 1.70.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 40ms 0.7ms 1.1MB 30ms 0ms rustc 1.70.0
rust 1.rs 475ms 0.7ms 1.0MB 463ms 0ms rustc 1.70.0