Programming Language and compiler
Benchmarks

Rust VS Ruby benchmarks

Current benchmark data was generated on Tue Apr 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 1.3ms 0.0ms 1.8MB 0ms 0ms rustc 1.85.1
rust 1.rs 1.4ms 0.1ms 1.8MB 0ms 0ms rustc 1.88.0-nightly
ruby 1.rb 35ms 0.3ms 139.0MB 12ms 24ms truffleruby 24.2.0
ruby 1.rb 53ms 1.0ms 13.1MB 40ms 2ms ruby/yjit 3.4.2
ruby 1.rb 54ms 1.4ms 12.9MB 40ms 2ms ruby 3.4.2

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 248ms 2.0ms 4.8MB 240ms 0ms rustc 1.88.0-nightly
rust 8.rs 308ms 0.6ms 4.8MB 300ms 0ms rustc 1.85.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 14ms 1.4ms 1.8MB 10ms 0ms rustc 1.88.0-nightly
rust 8.rs 15ms 0.2ms 1.9MB 10ms 0ms rustc 1.85.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 165ms 3.6ms 1.9MB 157ms 0ms rustc 1.85.1
rust 7-i.rs 237ms 0.6ms 1.8MB 230ms 0ms rustc 1.85.1
rust 1.rs 240ms 0.7ms 1.8MB 230ms 0ms rustc 1.85.1
rust 3.rs 279ms 0.5ms 1.8MB 270ms 0ms rustc 1.88.0-nightly
rust 2.rs 279ms 0.8ms 1.8MB 270ms 0ms rustc 1.85.1
ruby 2.rb 827ms 10ms 306.8MB 1060ms 120ms truffleruby 24.2.0
ruby 2.rb timeout 0.0ms 12.9MB 4980ms 7ms ruby 3.4.2
ruby 2.rb timeout 0.0ms 13.5MB 4980ms 7ms ruby/yjit 3.4.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 18ms 0.1ms 1.9MB 10ms 0ms rustc 1.85.1
rust 7-i.rs 26ms 0.5ms 1.9MB 20ms 0ms rustc 1.85.1
rust 1.rs 26ms 0.4ms 1.9MB 20ms 0ms rustc 1.85.1
rust 3.rs 30ms 0.0ms 1.8MB 20ms 0ms rustc 1.88.0-nightly
rust 2.rs 30ms 0.8ms 1.8MB 20ms 0ms rustc 1.85.1
ruby 2-m.rb 312ms 17ms 309.9MB 547ms 110ms truffleruby 24.2.0
ruby 2.rb 1069ms 6.2ms 13.5MB 1050ms 7ms ruby/yjit 3.4.2
ruby 2.rb 2781ms 57ms 12.9MB 2763ms 7ms ruby 3.4.2

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 494ms 0.5ms 2.6MB 1913ms 0ms rustc 1.88.0-nightly
rust 7-m.rs 501ms 0.3ms 2.3MB 1940ms 3ms rustc 1.85.1
rust 8.rs 996ms 1.9ms 2.5MB 987ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 1955ms 1.5ms 2.4MB 7683ms 10ms rustc 1.85.1
rust 7.rs 2107ms 4.3ms 2.0MB 2100ms 0ms rustc 1.85.1
rust 2.rs 4218ms 10.0ms 2.0MB 4207ms 0ms rustc 1.85.1
ruby 4.rb timeout 0.0ms 12.9MB 4987ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.2
ruby 4.rb timeout 0.0ms 425.1MB 5170ms 247ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 128ms 0.2ms 2.4MB 470ms 0ms rustc 1.88.0-nightly
rust 7-m.rs 131ms 1.8ms 2.1MB 477ms 0ms rustc 1.85.1
rust 8.rs 251ms 2.0ms 2.1MB 240ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 493ms 0.3ms 2.1MB 1907ms 0ms rustc 1.85.1
rust 7.rs 531ms 2.8ms 1.8MB 520ms 0ms rustc 1.85.1
rust 2.rs 1054ms 2.3ms 1.9MB 1043ms 0ms rustc 1.85.1
ruby 4.rb 4858ms 56ms 417.3MB 5143ms 210ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 12.9MB 4983ms 7ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 7ms ruby/yjit 3.4.2

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 35ms 0.1ms 2.1MB 107ms 3ms rustc 1.88.0-nightly
rust 7-m.rs 36ms 0.2ms 2.1MB 110ms 0ms rustc 1.85.1
rust 8.rs 64ms 0.0ms 2.0MB 60ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 127ms 0.2ms 2.1MB 467ms 3ms rustc 1.85.1
rust 7.rs 138ms 1.1ms 1.9MB 130ms 0ms rustc 1.85.1
rust 2.rs 266ms 1.3ms 1.9MB 260ms 0ms rustc 1.85.1
ruby 4.rb 1459ms 49ms 378.8MB 1800ms 147ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.8MB 4980ms 3ms ruby/yjit 3.4.2

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1275ms 2.7ms 33.8MB 1250ms 10ms rustc 1.85.1
rust 5.rs 1350ms 10ms 33.8MB 1330ms 7ms rustc 1.85.1
rust 3.rs 1456ms 37ms 49.8MB 1427ms 20ms rustc 1.85.1
ruby 1-m.rb 4767ms 126ms 811.9MB 6707ms 477ms truffleruby 24.2.0
ruby 1.rb 4863ms 1.8ms 109.4MB 4763ms 83ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 70.1MB 4940ms 43ms ruby 3.4.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 119ms 2.7ms 5.8MB 110ms 0ms rustc 1.85.1
rust 5.rs 127ms 3.5ms 5.8MB 117ms 0ms rustc 1.85.1
rust 3.rs 143ms 2.0ms 7.8MB 130ms 0ms rustc 1.85.1
ruby 1.rb 508ms 33ms 20.3MB 483ms 10ms ruby/yjit 3.4.2
ruby 1-m.rb 555ms 69ms 418.8MB 1097ms 167ms truffleruby 24.2.0
ruby 1.rb 928ms 2.7ms 19.6MB 903ms 10ms ruby 3.4.2

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 515ms 33ms 9.1MB 1920ms 73ms rustc 1.85.1
rust 5-m.rs 705ms 15ms 5.5MB 2663ms 83ms rustc 1.85.1
rust 1-m.rs 972ms 6.4ms 8.5MB 3587ms 207ms rustc 1.85.1
rust 3.rs 1150ms 20ms 9.3MB 1100ms 37ms rustc 1.85.1
ruby 1.rb 1459ms 16ms 63.8MB 1383ms 60ms ruby/yjit 3.4.2
ruby 1.rb 1869ms 36ms 63.1MB 1790ms 63ms ruby 3.4.2
rust 4.rs 1914ms 27ms 7.4MB 1900ms 0ms rustc 1.85.1
ruby 1.rb timeout 0.0ms 344.5MB 4627ms 1523ms truffleruby 24.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 52ms 1.0ms 3.4MB 157ms 10ms rustc 1.85.1
rust 3-m.rs 57ms 3.9ms 4.4MB 173ms 13ms rustc 1.85.1
rust 3.rs 73ms 1.3ms 4.0MB 63ms 0ms rustc 1.85.1
rust 1-m.rs 75ms 0.5ms 3.8MB 243ms 17ms rustc 1.85.1
rust 4.rs 116ms 2.5ms 3.3MB 107ms 0ms rustc 1.85.1
ruby 1.rb 158ms 1.9ms 25.6MB 127ms 20ms ruby/yjit 3.4.2
ruby 1.rb 188ms 3.4ms 25.1MB 157ms 20ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 346.9MB 4623ms 1517ms truffleruby 24.2.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 122ms 2.6ms 3.6MB 110ms 0ms rustc 1.85.1
rust 2.rs 422ms 2.5ms 3.6MB 410ms 0ms rustc 1.85.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 34ms 1.7ms 2.9MB 27ms 0ms rustc 1.85.1
rust 2.rs 77ms 0.9ms 3.0MB 70ms 0ms rustc 1.85.1

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 410ms 2.4ms 2.1MB 1577ms 0ms rustc 1.85.1
rust 5-m.rs 571ms 5.2ms 2.0MB 2193ms 0ms rustc 1.85.1
rust 2-im.rs 627ms 5.5ms 2.0MB 2410ms 0ms rustc 1.85.1
rust 1-m.rs 977ms 9.9ms 2.1MB 3773ms 0ms rustc 1.85.1
rust 3-i.rs 1500ms 2.2ms 1.9MB 1490ms 0ms rustc 1.85.1
rust 2-i.rs 1760ms 2.0ms 1.8MB 1750ms 0ms rustc 1.85.1
rust 1.rs 2692ms 5.3ms 1.8MB 2683ms 0ms rustc 1.85.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 0.2ms 2.1MB 123ms 0ms rustc 1.85.1
rust 5-m.rs 55ms 2.1ms 2.0MB 177ms 0ms rustc 1.85.1
rust 2-im.rs 60ms 0.2ms 2.1MB 200ms 0ms rustc 1.85.1
rust 1-m.rs 87ms 1.2ms 2.1MB 310ms 0ms rustc 1.85.1
rust 3-i.rs 126ms 1.6ms 1.9MB 120ms 0ms rustc 1.85.1
rust 2-i.rs 150ms 1.0ms 1.8MB 140ms 0ms rustc 1.85.1
rust 1.rs 229ms 0.4ms 1.8MB 220ms 0ms rustc 1.85.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 90ms 0.3ms 3.2MB 263ms 0ms rustc 1.85.1
rust 5-m.rs 95ms 0.8ms 3.2MB 290ms 0ms rustc 1.85.1
rust 6.rs 143ms 0.2ms 1.9MB 133ms 0ms rustc 1.85.1
rust 1c.rs 163ms 1.1ms 1.9MB 153ms 0ms rustc 1.85.1
rust 1.rs 195ms 0.5ms 1.9MB 183ms 0ms rustc 1.85.1
ruby 6.rb 2077ms 33ms 23.0MB 2053ms 10ms ruby/yjit 3.4.2
ruby 6-m.rb 2154ms 27ms 419.9MB 5600ms 347ms truffleruby 24.2.0
ruby 6.rb 3878ms 66ms 22.5MB 3853ms 13ms ruby 3.4.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 16ms 0.3ms 3.2MB 23ms 0ms rustc 1.85.1
rust 5-m.rs 17ms 0.6ms 3.3MB 30ms 0ms rustc 1.85.1
rust 6.rs 17ms 0.8ms 1.9MB 10ms 0ms rustc 1.85.1
rust 1c.rs 19ms 0.1ms 1.9MB 10ms 0ms rustc 1.85.1
rust 1.rs 22ms 0.4ms 1.9MB 10ms 0ms rustc 1.85.1
ruby 6.rb 265ms 3.1ms 15.0MB 247ms 7ms ruby/yjit 3.4.2
ruby 6.rb 439ms 2.9ms 14.5MB 420ms 3ms ruby 3.4.2
ruby 6-m.rb 812ms 40ms 382.1MB 2017ms 183ms truffleruby 24.2.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1-m.rs 290ms 60ms 84.0MB 173ms 503ms rustc 1.85.1
rust 2-m.rs 364ms 16ms 70.9MB 253ms 867ms rustc 1.85.1
rust 1-http2.rs 379ms 64ms 58.0MB 867ms 423ms rustc 1.85.1
rust 2-http2.rs 467ms 58ms 64.2MB 1067ms 527ms rustc 1.85.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1-m.rs 42ms 3.1ms 15.8MB 17ms 57ms rustc 1.85.1
rust 2-m.rs 81ms 7.9ms 21.8MB 27ms 167ms rustc 1.85.1
rust 1-http2.rs 187ms 57ms 23.3MB 443ms 180ms rustc 1.85.1
rust 2-http2.rs 224ms 48ms 25.5MB 577ms 187ms rustc 1.85.1

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 30ms 1.2ms 9.8MB 13ms 3ms rustc 1.85.1
rust 4-i.rs 34ms 2.7ms 7.9MB 23ms 0ms rustc 1.85.1
rust 3.rs 61ms 1.3ms 32.0MB 40ms 10ms rustc 1.85.1
rust 2.rs 62ms 1.6ms 33.8MB 37ms 13ms rustc 1.85.1
rust 1.rs 103ms 1.3ms 67.4MB 70ms 20ms rustc 1.85.1
ruby 1.rb 258ms 2.9ms 28.1MB 233ms 10ms ruby/yjit 3.4.2
ruby 1.rb 259ms 4.0ms 26.6MB 230ms 13ms ruby 3.4.2
ruby 1-m.rb 4362ms 155ms 576.2MB 11467ms 350ms truffleruby 24.2.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 208ms 3.5ms 52.6MB 187ms 7ms rustc 1.85.1
rust 4-i.rs 257ms 1.3ms 53.6MB 203ms 37ms rustc 1.85.1
rust 2.rs 404ms 1.3ms 237.6MB 300ms 90ms rustc 1.85.1
rust 3.rs 412ms 3.5ms 237.6MB 303ms 97ms rustc 1.85.1
rust 1.rs 698ms 3.3ms 550.2MB 457ms 230ms rustc 1.85.1
ruby 1.rb 2091ms 12ms 134.7MB 1990ms 87ms ruby 3.4.2
ruby 1.rb 2092ms 9.2ms 132.2MB 2000ms 80ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 485.6MB 13250ms 367ms truffleruby 24.2.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 226ms 1.7ms 26.7MB 670ms 10ms rustc 1.85.1
rust 8.rs 469ms 8.7ms 22.5MB 447ms 7ms rustc 1.85.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 30ms 1.9ms 16.0MB 60ms 0ms rustc 1.85.1
rust 8.rs 60ms 0.6ms 11.4MB 50ms 0ms rustc 1.85.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 39ms 9.6ms 1.8MB 30ms 0ms rustc 1.85.1
rust 1.rs 47ms 2.9ms 2.0MB 40ms 0ms rustc 1.85.1
ruby 1.rb 331ms 1.9ms 13.5MB 313ms 3ms ruby/yjit 3.4.2
ruby 1.rb 541ms 20ms 13.0MB 527ms 3ms ruby 3.4.2
ruby 1-m.rb 654ms 36ms 370.3MB 1150ms 157ms truffleruby 24.2.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 155ms 14ms 1.9MB 147ms 0ms rustc 1.85.1
rust 1.rs 187ms 18ms 2.0MB 180ms 0ms rustc 1.85.1
ruby 1.rb 876ms 8.2ms 13.5MB 857ms 7ms ruby/yjit 3.4.2
ruby 1-m.rb 1234ms 21ms 404.6MB 1727ms 163ms truffleruby 24.2.0
ruby 1.rb 1479ms 10ms 13.0MB 1457ms 10ms ruby 3.4.2

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 22ms 0.3ms 1.8MB 13ms 0ms rustc 1.85.1
rust 1.rs 30ms 0.7ms 1.9MB 20ms 0ms rustc 1.85.1
ruby 1.rb 192ms 1.5ms 13.5MB 170ms 7ms ruby/yjit 3.4.2
ruby 1.rb 292ms 3.4ms 12.9MB 277ms 0ms ruby 3.4.2
ruby 1-m.rb 512ms 30ms 361.1MB 973ms 137ms truffleruby 24.2.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 763ms 45ms 33.8MB 737ms 10ms rustc 1.85.1
ruby 1-m.rb 4430ms 469ms 527.4MB 11217ms 380ms truffleruby 24.2.0
ruby 1.rb timeout 0.0ms 93.6MB 4933ms 50ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 94.8MB 4940ms 50ms ruby/yjit 3.4.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 153ms 2.9ms 9.8MB 143ms 0ms rustc 1.85.1
ruby 1-m.rb 1938ms 44ms 591.3MB 5030ms 250ms truffleruby 24.2.0
ruby 1.rb 3421ms 15ms 38.3MB 3377ms 30ms ruby/yjit 3.4.2
ruby 1.rb 4437ms 12ms 37.8MB 4397ms 27ms ruby 3.4.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 311ms 3.9ms 40.9MB 297ms 0ms rustc 1.85.1
rust 2.rs 315ms 2.5ms 6.6MB 303ms 0ms rustc 1.85.1
ruby 1.rb timeout 0.0ms 325.4MB 4843ms 140ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 327.0MB 4850ms 137ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 695.1MB 5063ms 153ms truffleruby 24.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 63ms 2.3ms 11.6MB 53ms 0ms rustc 1.85.1
rust 2.rs 77ms 0.9ms 2.9MB 70ms 0ms rustc 1.85.1
ruby 1-m.rb 1704ms 22ms 482.3MB 2477ms 170ms truffleruby 24.2.0
ruby 1.rb 3396ms 18ms 131.8MB 3303ms 80ms ruby/yjit 3.4.2
ruby 1.rb 4463ms 12ms 131.1MB 4370ms 77ms ruby 3.4.2

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1524ms 4.2ms 2.7MB 1303ms 203ms rustc 1.85.1
rust 2.rs 1708ms 4.8ms 2.6MB 1630ms 67ms rustc 1.85.1
ruby 1.rb timeout 0.0ms 46.5MB 4930ms 60ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 47.1MB 4923ms 60ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 443.3MB 13133ms 447ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 324ms 4.6ms 2.4MB 297ms 13ms rustc 1.85.1
rust 2.rs 383ms 6.3ms 2.4MB 373ms 0ms rustc 1.85.1
ruby 1-m.rb 1605ms 209ms 383.3MB 4227ms 207ms truffleruby 24.2.0
ruby 1.rb 1696ms 3.3ms 46.1MB 1657ms 27ms ruby 3.4.2
ruby 1.rb 1784ms 9.6ms 127.6MB 1637ms 133ms ruby/yjit 3.4.2

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 445ms 11ms 77.5MB 463ms 17ms rustc 1.85.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 49ms 0.9ms 12.4MB 40ms 0ms rustc 1.85.1

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 120ms 2.0ms 1.9MB 110ms 0ms rustc 1.85.1
rust 1.rs 1453ms 31ms 1.9MB 1443ms 0ms rustc 1.85.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 33ms 1.0ms 1.8MB 23ms 0ms rustc 1.85.1
rust 1.rs 365ms 3.7ms 1.9MB 357ms 0ms rustc 1.85.1