Programming Language and compiler
Benchmarks

Rust VS Ruby benchmarks

Current benchmark data was generated on Sun Jun 01 2025, 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
rust 1.rs 1.2ms 0.0ms 1.8MB 0ms 0ms rustc 1.87.0
rust 1.rs 1.4ms 0.2ms 1.8MB 0ms 0ms rustc 1.89.0-nightly
ruby 1.rb 34ms 0.5ms 141.5MB 10ms 26ms truffleruby 24.2.1
ruby 1.rb 50ms 1.4ms 12.9MB 38ms 2ms ruby/yjit 3.4.4
ruby 1.rb 51ms 1.7ms 12.8MB 36ms 2ms ruby 3.4.4

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 247ms 0.7ms 4.9MB 240ms 0ms rustc 1.89.0-nightly
rust 8.rs 291ms 1.6ms 4.8MB 283ms 0ms rustc 1.87.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 13ms 0.3ms 2.0MB 10ms 0ms rustc 1.89.0-nightly
rust 8.rs 14ms 0.4ms 1.9MB 10ms 0ms rustc 1.87.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 164ms 0.4ms 1.8MB 157ms 0ms rustc 1.87.0
rust 7-i.rs 217ms 0.1ms 1.8MB 210ms 0ms rustc 1.87.0
rust 1.rs 229ms 0.8ms 1.8MB 220ms 0ms rustc 1.87.0
rust 3.rs 279ms 0.8ms 1.8MB 270ms 0ms rustc 1.89.0-nightly
rust 2.rs 279ms 0.6ms 1.6MB 270ms 0ms rustc 1.87.0
ruby 2.rb 823ms 8.8ms 310.2MB 1070ms 110ms truffleruby 24.2.1
ruby 2.rb timeout 0.0ms 12.8MB 4983ms 3ms ruby 3.4.4
ruby 2.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.4

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 18ms 0.1ms 1.8MB 10ms 0ms rustc 1.87.0
rust 7-i.rs 24ms 0.5ms 1.8MB 20ms 0ms rustc 1.87.0
rust 1.rs 25ms 0.4ms 1.8MB 20ms 0ms rustc 1.87.0
rust 3.rs 30ms 0.1ms 1.8MB 20ms 0ms rustc 1.89.0-nightly
rust 2.rs 30ms 0.2ms 1.6MB 20ms 0ms rustc 1.87.0
ruby 2-m.rb 323ms 5.2ms 325.5MB 593ms 110ms truffleruby 24.2.1
ruby 2.rb 1025ms 6.4ms 13.5MB 1010ms 3ms ruby/yjit 3.4.4
ruby 2.rb 2919ms 94ms 12.8MB 2903ms 3ms ruby 3.4.4

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 493ms 0.4ms 2.1MB 1903ms 3ms rustc 1.87.0
rust 8-m.rs 494ms 3.1ms 2.4MB 1890ms 7ms rustc 1.89.0-nightly
rust 8.rs 993ms 1.1ms 2.3MB 980ms 0ms rustc 1.89.0-nightly
rust 7.rs 1955ms 10ms 2.0MB 1947ms 0ms rustc 1.87.0
rust 2-m.rs 2077ms 1.2ms 2.3MB 8183ms 0ms rustc 1.87.0
rust 2.rs 4266ms 7.7ms 2.0MB 4257ms 0ms rustc 1.87.0
ruby 4.rb timeout 0.0ms 12.9MB 4983ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.4
ruby 4.rb timeout 0.0ms 436.2MB 5167ms 233ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 127ms 0.1ms 2.1MB 470ms 0ms rustc 1.87.0
rust 8-m.rs 127ms 1.0ms 2.1MB 467ms 3ms rustc 1.89.0-nightly
rust 8.rs 250ms 0.5ms 2.0MB 240ms 0ms rustc 1.89.0-nightly
rust 7.rs 491ms 2.2ms 1.8MB 480ms 0ms rustc 1.87.0
rust 2-m.rs 522ms 0.1ms 2.1MB 2030ms 0ms rustc 1.87.0
rust 2.rs 1068ms 1.1ms 2.0MB 1060ms 0ms rustc 1.87.0
ruby 4.rb 4820ms 15ms 423.5MB 5103ms 203ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4987ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 0ms ruby/yjit 3.4.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 35ms 0.3ms 2.1MB 110ms 0ms rustc 1.87.0
rust 8-m.rs 35ms 0.7ms 2.1MB 117ms 0ms rustc 1.89.0-nightly
rust 8.rs 66ms 0.4ms 1.9MB 60ms 0ms rustc 1.89.0-nightly
rust 7.rs 126ms 2.5ms 1.8MB 120ms 0ms rustc 1.87.0
rust 2-m.rs 134ms 0.3ms 2.0MB 493ms 3ms rustc 1.87.0
rust 2.rs 270ms 1.4ms 1.9MB 260ms 0ms rustc 1.87.0
ruby 4.rb 1453ms 19ms 405.2MB 1797ms 150ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4983ms 7ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 7ms ruby/yjit 3.4.4

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1263ms 18ms 33.6MB 1243ms 3ms rustc 1.87.0
rust 5.rs 1337ms 12ms 33.8MB 1313ms 7ms rustc 1.87.0
rust 3.rs 1434ms 36ms 49.8MB 1403ms 17ms rustc 1.87.0
ruby 1-m.rb 4549ms 73ms 838.0MB 6403ms 490ms truffleruby 24.2.1
ruby 1.rb 4697ms 113ms 110.0MB 4607ms 77ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 70.4MB 4953ms 37ms ruby 3.4.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 122ms 2.1ms 5.8MB 110ms 0ms rustc 1.87.0
rust 5.rs 125ms 2.8ms 5.8MB 113ms 0ms rustc 1.87.0
rust 3.rs 137ms 1.7ms 7.8MB 130ms 0ms rustc 1.87.0
ruby 1.rb 489ms 7.3ms 20.3MB 463ms 10ms ruby/yjit 3.4.4
ruby 1-m.rb 502ms 12ms 405.6MB 983ms 153ms truffleruby 24.2.1
ruby 1.rb 948ms 7.8ms 19.5MB 927ms 10ms ruby 3.4.4

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 559ms 49ms 9.1MB 2110ms 60ms rustc 1.87.0
rust 5-m.rs 658ms 6.0ms 5.9MB 2497ms 63ms rustc 1.87.0
rust 1-m.rs 966ms 9.1ms 7.3MB 3573ms 223ms rustc 1.87.0
rust 3.rs 1139ms 7.2ms 9.3MB 1103ms 20ms rustc 1.87.0
ruby 1.rb 1405ms 6.4ms 63.8MB 1330ms 60ms ruby/yjit 3.4.4
ruby 1.rb 1867ms 34ms 63.0MB 1787ms 63ms ruby 3.4.4
rust 4.rs 1950ms 56ms 6.9MB 1937ms 0ms rustc 1.87.0
ruby 1.rb timeout 0.0ms 348.7MB 4700ms 1477ms truffleruby 24.2.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 52ms 1.1ms 3.3MB 160ms 7ms rustc 1.87.0
rust 3-m.rs 54ms 7.6ms 4.3MB 170ms 10ms rustc 1.87.0
rust 3.rs 72ms 2.6ms 4.0MB 60ms 0ms rustc 1.87.0
rust 1-m.rs 75ms 0.8ms 3.6MB 240ms 20ms rustc 1.87.0
rust 4.rs 119ms 4.2ms 3.1MB 113ms 0ms rustc 1.87.0
ruby 1.rb 152ms 1.3ms 25.6MB 123ms 13ms ruby/yjit 3.4.4
ruby 1.rb 182ms 1.0ms 25.0MB 150ms 13ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 356.8MB 4790ms 1430ms truffleruby 24.2.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 121ms 2.9ms 3.6MB 113ms 0ms rustc 1.87.0
rust 2.rs 415ms 1.7ms 3.6MB 407ms 0ms rustc 1.87.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 34ms 1.8ms 2.9MB 30ms 0ms rustc 1.87.0
rust 2.rs 77ms 1.3ms 3.0MB 70ms 0ms rustc 1.87.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 410ms 0.9ms 2.0MB 1590ms 0ms rustc 1.87.0
rust 5-m.rs 554ms 6.5ms 2.1MB 2127ms 0ms rustc 1.87.0
rust 2-im.rs 663ms 7.6ms 2.0MB 2550ms 0ms rustc 1.87.0
rust 1-m.rs 966ms 8.0ms 2.0MB 3750ms 0ms rustc 1.87.0
rust 3-i.rs 1498ms 2.8ms 1.9MB 1490ms 0ms rustc 1.87.0
rust 2-i.rs 2404ms 1.8ms 1.8MB 2393ms 0ms rustc 1.87.0
rust 1.rs 2720ms 4.9ms 1.8MB 2710ms 0ms rustc 1.87.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 37ms 0.2ms 2.1MB 123ms 0ms rustc 1.87.0
rust 5-m.rs 51ms 1.3ms 2.0MB 170ms 0ms rustc 1.87.0
rust 2-im.rs 72ms 13ms 2.1MB 200ms 0ms rustc 1.87.0
rust 1-m.rs 85ms 1.4ms 2.1MB 297ms 0ms rustc 1.87.0
rust 3-i.rs 125ms 0.5ms 1.9MB 120ms 0ms rustc 1.87.0
rust 2-i.rs 198ms 0.5ms 1.8MB 190ms 0ms rustc 1.87.0
rust 1.rs 225ms 2.5ms 1.8MB 217ms 0ms rustc 1.87.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 6.rs 87ms 2.1ms 2.0MB 80ms 0ms rustc 1.87.0
rust 5c-m.rs 88ms 0.2ms 3.2MB 247ms 0ms rustc 1.87.0
rust 5-m.rs 92ms 1.2ms 3.2MB 283ms 0ms rustc 1.87.0
rust 1c.rs 163ms 1.1ms 1.9MB 150ms 0ms rustc 1.87.0
rust 1.rs 195ms 1.0ms 2.0MB 187ms 0ms rustc 1.87.0
ruby 6.rb 2020ms 7.1ms 23.0MB 1993ms 13ms ruby/yjit 3.4.4
ruby 6-m.rb 2228ms 213ms 408.8MB 5793ms 337ms truffleruby 24.2.1
ruby 6.rb 3691ms 14ms 22.4MB 3667ms 10ms ruby 3.4.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 6.rs 11ms 1.2ms 1.9MB 0ms 0ms rustc 1.87.0
rust 5c-m.rs 16ms 0.7ms 3.2MB 20ms 0ms rustc 1.87.0
rust 5-m.rs 16ms 0.4ms 3.2MB 27ms 0ms rustc 1.87.0
rust 1c.rs 18ms 0.1ms 1.9MB 10ms 0ms rustc 1.87.0
rust 1.rs 22ms 0.7ms 1.9MB 17ms 0ms rustc 1.87.0
ruby 6.rb 255ms 2.3ms 15.2MB 240ms 0ms ruby/yjit 3.4.4
ruby 6.rb 420ms 5.4ms 14.5MB 403ms 0ms ruby 3.4.4
ruby 6-m.rb 729ms 109ms 365.6MB 1803ms 163ms truffleruby 24.2.1

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1-m.rs 284ms 67ms 73.3MB 163ms 437ms rustc 1.87.0
rust 2-http2.rs 345ms 19ms 53.5MB 813ms 367ms rustc 1.87.0
rust 2-m.rs 418ms 86ms 65.8MB 213ms 777ms rustc 1.87.0
rust 1-http2.rs 491ms 205ms 68.1MB 1267ms 467ms rustc 1.87.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1-m.rs 43ms 3.0ms 17.5MB 20ms 60ms rustc 1.87.0
rust 2-m.rs 83ms 4.6ms 22.9MB 30ms 167ms rustc 1.87.0
rust 1-http2.rs 209ms 59ms 26.9MB 540ms 187ms rustc 1.87.0
rust 2-http2.rs 247ms 14ms 27.1MB 687ms 183ms rustc 1.87.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 29ms 1.8ms 9.8MB 20ms 0ms rustc 1.87.0
rust 4-i.rs 31ms 0.8ms 7.9MB 20ms 0ms rustc 1.87.0
rust 2.rs 59ms 2.6ms 33.8MB 37ms 10ms rustc 1.87.0
rust 3.rs 59ms 2.5ms 32.0MB 37ms 7ms rustc 1.87.0
rust 1.rs 99ms 3.4ms 67.4MB 63ms 23ms rustc 1.87.0
ruby 1.rb 247ms 0.5ms 27.5MB 220ms 10ms ruby 3.4.4
ruby 1.rb 249ms 5.5ms 27.8MB 220ms 13ms ruby/yjit 3.4.4
ruby 1-m.rb 4414ms 177ms 502.4MB 11650ms 337ms truffleruby 24.2.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 217ms 2.8ms 53.3MB 190ms 10ms rustc 1.87.0
rust 4-i.rs 259ms 4.8ms 54.5MB 207ms 40ms rustc 1.87.0
rust 2.rs 389ms 5.3ms 238.3MB 283ms 93ms rustc 1.87.0
rust 3.rs 406ms 4.6ms 237.8MB 303ms 90ms rustc 1.87.0
rust 1.rs 684ms 5.4ms 551.8MB 440ms 233ms rustc 1.87.0
ruby 1.rb 2068ms 11ms 135.0MB 1977ms 77ms ruby/yjit 3.4.4
ruby 1.rb 2084ms 23ms 133.9MB 2000ms 73ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 515.9MB 13230ms 373ms truffleruby 24.2.1

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 218ms 8.0ms 26.9MB 633ms 10ms rustc 1.87.0
rust 8.rs 410ms 12ms 24.3MB 390ms 10ms rustc 1.87.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 29ms 1.5ms 16.3MB 60ms 7ms rustc 1.87.0
rust 8.rs 55ms 2.0ms 11.4MB 40ms 0ms rustc 1.87.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 37ms 4.5ms 1.9MB 27ms 0ms rustc 1.87.0
rust 1.rs 45ms 1.9ms 1.9MB 40ms 0ms rustc 1.87.0
ruby 1.rb 345ms 2.2ms 13.5MB 327ms 10ms ruby/yjit 3.4.4
ruby 1.rb 531ms 3.8ms 12.9MB 507ms 10ms ruby 3.4.4
ruby 1-m.rb 681ms 22ms 372.4MB 1237ms 140ms truffleruby 24.2.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 144ms 3.7ms 1.8MB 133ms 0ms rustc 1.87.0
rust 1.rs 212ms 30ms 1.9MB 200ms 0ms rustc 1.87.0
ruby 1.rb 906ms 5.6ms 13.5MB 890ms 3ms ruby/yjit 3.4.4
ruby 1-m.rb 1181ms 17ms 400.4MB 1707ms 157ms truffleruby 24.2.1
ruby 1.rb 1478ms 4.7ms 12.8MB 1460ms 3ms ruby 3.4.4

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 23ms 0.6ms 1.8MB 13ms 0ms rustc 1.87.0
rust 1.rs 29ms 0.6ms 1.8MB 20ms 0ms rustc 1.87.0
ruby 1.rb 194ms 1.0ms 13.5MB 177ms 7ms ruby/yjit 3.4.4
ruby 1.rb 292ms 3.6ms 12.8MB 280ms 7ms ruby 3.4.4
ruby 1-m.rb 532ms 4.1ms 356.3MB 1023ms 140ms truffleruby 24.2.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 690ms 2.4ms 33.8MB 667ms 7ms rustc 1.87.0
ruby 1-m.rb 4042ms 349ms 544.7MB 10327ms 353ms truffleruby 24.2.1
ruby 1.rb timeout 0.0ms 93.5MB 4940ms 47ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 97.4MB 4940ms 47ms ruby/yjit 3.4.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 152ms 5.9ms 9.8MB 143ms 0ms rustc 1.87.0
ruby 1-m.rb 2018ms 52ms 569.1MB 5267ms 243ms truffleruby 24.2.1
ruby 1.rb 3259ms 25ms 38.3MB 3220ms 20ms ruby/yjit 3.4.4
ruby 1.rb 4347ms 35ms 37.6MB 4310ms 20ms ruby 3.4.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 298ms 3.3ms 40.9MB 283ms 0ms rustc 1.87.0
rust 2.rs 308ms 4.1ms 6.6MB 293ms 0ms rustc 1.87.0
ruby 1.rb timeout 0.0ms 325.3MB 4850ms 133ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 327.0MB 4847ms 140ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 731.9MB 5060ms 163ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 64ms 1.3ms 11.6MB 50ms 0ms rustc 1.87.0
rust 2.rs 78ms 1.1ms 2.9MB 70ms 0ms rustc 1.87.0
ruby 1-m.rb 1696ms 5.1ms 473.6MB 2500ms 160ms truffleruby 24.2.1
ruby 1.rb 3471ms 137ms 131.8MB 3380ms 80ms ruby/yjit 3.4.4
ruby 1.rb 4452ms 24ms 131.1MB 4367ms 70ms ruby 3.4.4

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1517ms 14ms 2.7MB 1313ms 187ms rustc 1.87.0
rust 2.rs 1714ms 21ms 2.7MB 1633ms 67ms rustc 1.87.0
ruby 1.rb timeout 0.0ms 130.3MB 4870ms 113ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 131.1MB 4837ms 147ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 465.0MB 13420ms 380ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 319ms 4.3ms 2.4MB 290ms 13ms rustc 1.87.0
rust 2.rs 381ms 2.2ms 2.4MB 367ms 0ms rustc 1.87.0
ruby 1-m.rb 1723ms 255ms 383.7MB 4550ms 200ms truffleruby 24.2.1
ruby 1.rb 1760ms 71ms 130.8MB 1653ms 93ms ruby/yjit 3.4.4
ruby 1.rb 1813ms 6.5ms 130.4MB 1677ms 123ms ruby 3.4.4

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 443ms 4.9ms 78.6MB 457ms 13ms rustc 1.87.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 50ms 1.8ms 11.6MB 40ms 0ms rustc 1.87.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 117ms 3.1ms 1.9MB 110ms 0ms rustc 1.87.0
rust 1.rs 1422ms 8.7ms 1.9MB 1410ms 0ms rustc 1.87.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 32ms 1.3ms 1.8MB 23ms 0ms rustc 1.87.0
rust 1.rs 359ms 1.5ms 1.9MB 350ms 0ms rustc 1.87.0