Programming Language and compiler
Benchmarks

Rust VS Ruby benchmarks

Current benchmark data was generated on Mon Jun 23 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 0.1ms 1.8MB 0ms 0ms rustc 1.87.0
rust 1.rs 1.2ms 0.0ms 1.8MB 0ms 0ms rustc 1.89.0-nightly
ruby 1.rb 36ms 0.9ms 141.8MB 12ms 30ms truffleruby 24.2.1
ruby 1.rb 51ms 1.3ms 12.8MB 40ms 0ms ruby 3.4.4
ruby 1.rb 54ms 1.3ms 12.9MB 40ms 4ms ruby/yjit 3.4.4

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 256ms 17ms 4.8MB 250ms 0ms rustc 1.89.0-nightly
rust 8.rs 293ms 1.7ms 4.9MB 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 12ms 0.5ms 2.0MB 0ms 0ms rustc 1.89.0-nightly
rust 8.rs 14ms 0.1ms 2.0MB 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 0.9ms 1.9MB 160ms 0ms rustc 1.87.0
rust 7-i.rs 219ms 0.9ms 1.8MB 210ms 0ms rustc 1.87.0
rust 1.rs 230ms 0.5ms 1.9MB 220ms 0ms rustc 1.87.0
rust 3.rs 279ms 0.3ms 1.9MB 270ms 0ms rustc 1.89.0-nightly
rust 2.rs 279ms 0.6ms 1.8MB 270ms 0ms rustc 1.87.0
ruby 2.rb 831ms 18ms 310.8MB 1067ms 110ms truffleruby 24.2.1
ruby 2.rb timeout 0.0ms 12.8MB 4983ms 0ms ruby 3.4.4
ruby 2.rb timeout 0.0ms 13.5MB 4980ms 7ms 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 19ms 0.1ms 1.8MB 10ms 0ms rustc 1.87.0
rust 7-i.rs 24ms 0.2ms 1.8MB 20ms 0ms rustc 1.87.0
rust 1.rs 25ms 0.2ms 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 0.4ms 1.8MB 20ms 0ms rustc 1.87.0
ruby 2-m.rb 310ms 3.7ms 323.2MB 563ms 110ms truffleruby 24.2.1
ruby 2.rb 1029ms 3.6ms 13.5MB 1017ms 0ms ruby/yjit 3.4.4
ruby 2.rb 2937ms 80ms 12.8MB 2920ms 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 492ms 0.0ms 2.1MB 1907ms 7ms rustc 1.87.0
rust 8-m.rs 497ms 4.4ms 2.4MB 1893ms 3ms rustc 1.89.0-nightly
rust 8.rs 991ms 0.5ms 2.3MB 980ms 0ms rustc 1.89.0-nightly
rust 7.rs 1957ms 10ms 1.9MB 1947ms 0ms rustc 1.87.0
rust 2-m.rs 2070ms 0.9ms 2.3MB 8153ms 7ms rustc 1.87.0
rust 2.rs 4266ms 8.9ms 2.1MB 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 4983ms 3ms ruby/yjit 3.4.4
ruby 4.rb timeout 0.0ms 444.0MB 5170ms 240ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 128ms 0.4ms 2.1MB 470ms 0ms rustc 1.87.0
rust 8-m.rs 128ms 0.2ms 2.3MB 470ms 0ms rustc 1.89.0-nightly
rust 8.rs 250ms 0.1ms 2.1MB 240ms 0ms rustc 1.89.0-nightly
rust 7.rs 495ms 6.2ms 1.8MB 487ms 0ms rustc 1.87.0
rust 2-m.rs 521ms 0.3ms 2.1MB 2020ms 3ms rustc 1.87.0
rust 2.rs 1067ms 0.1ms 2.0MB 1060ms 0ms rustc 1.87.0
ruby 4.rb 4929ms 35ms 450.6MB 5243ms 210ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4987ms 0ms ruby/yjit 3.4.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 36ms 0.5ms 2.3MB 110ms 0ms rustc 1.89.0-nightly
rust 7-m.rs 36ms 0.5ms 2.0MB 113ms 0ms rustc 1.87.0
rust 8.rs 65ms 0.5ms 2.0MB 60ms 0ms rustc 1.89.0-nightly
rust 7.rs 125ms 1.2ms 1.9MB 120ms 0ms rustc 1.87.0
rust 2-m.rs 134ms 0.3ms 2.0MB 490ms 0ms rustc 1.87.0
rust 2.rs 269ms 0.2ms 1.9MB 260ms 0ms rustc 1.87.0
ruby 4.rb 1454ms 17ms 382.2MB 1783ms 143ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 0ms 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 1281ms 3.7ms 33.6MB 1260ms 10ms rustc 1.87.0
rust 5.rs 1360ms 12ms 33.8MB 1337ms 7ms rustc 1.87.0
rust 3.rs 1485ms 57ms 49.8MB 1453ms 17ms rustc 1.87.0
ruby 1.rb 4905ms 47ms 110.1MB 4803ms 87ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 70.5MB 4950ms 37ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 757.2MB 6760ms 690ms truffleruby 24.2.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 124ms 2.4ms 5.8MB 113ms 0ms rustc 1.87.0
rust 5.rs 127ms 3.7ms 5.8MB 117ms 0ms rustc 1.87.0
rust 3.rs 138ms 7.0ms 7.8MB 127ms 0ms rustc 1.87.0
ruby 1.rb 500ms 4.2ms 20.3MB 477ms 10ms ruby/yjit 3.4.4
ruby 1-m.rb 571ms 43ms 418.8MB 1113ms 167ms truffleruby 24.2.1
ruby 1.rb 948ms 9.8ms 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 529ms 9.1ms 9.1MB 2003ms 57ms rustc 1.87.0
rust 5-m.rs 548ms 114ms 5.5MB 2063ms 63ms rustc 1.87.0
rust 1-m.rs 918ms 4.0ms 7.4MB 3403ms 190ms rustc 1.87.0
rust 3.rs 1104ms 13ms 9.3MB 1063ms 27ms rustc 1.87.0
ruby 1.rb 1462ms 9.4ms 63.8MB 1387ms 60ms ruby/yjit 3.4.4
ruby 1.rb 1870ms 14ms 63.3MB 1797ms 60ms ruby 3.4.4
rust 4.rs 1879ms 5.7ms 6.9MB 1863ms 0ms rustc 1.87.0
ruby 1.rb timeout 0.0ms 329.4MB 4770ms 1413ms 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 1.9ms 3.3MB 163ms 7ms rustc 1.87.0
rust 3-m.rs 59ms 3.2ms 4.4MB 187ms 10ms rustc 1.87.0
rust 3.rs 67ms 0.4ms 4.0MB 57ms 0ms rustc 1.87.0
rust 1-m.rs 71ms 0.4ms 3.5MB 223ms 20ms rustc 1.87.0
rust 4.rs 118ms 4.8ms 3.1MB 107ms 0ms rustc 1.87.0
ruby 1.rb 156ms 2.7ms 25.8MB 120ms 20ms ruby/yjit 3.4.4
ruby 1.rb 181ms 2.5ms 25.1MB 147ms 20ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 342.9MB 4630ms 1483ms 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 2.3ms 3.6MB 113ms 0ms rustc 1.87.0
rust 2.rs 427ms 1.5ms 3.6MB 417ms 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 1.6ms 2.9MB 30ms 0ms rustc 1.87.0
rust 2.rs 76ms 0.1ms 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 412ms 1.0ms 2.1MB 1587ms 0ms rustc 1.87.0
rust 5-m.rs 558ms 5.3ms 2.1MB 2150ms 0ms rustc 1.87.0
rust 2-im.rs 666ms 4.7ms 2.0MB 2570ms 0ms rustc 1.87.0
rust 1-m.rs 959ms 43ms 2.1MB 3667ms 0ms rustc 1.87.0
rust 3-i.rs 1498ms 0.7ms 1.8MB 1490ms 0ms rustc 1.87.0
rust 2-i.rs 2345ms 0.3ms 1.8MB 2337ms 0ms rustc 1.87.0
rust 1.rs 2722ms 8.7ms 1.8MB 2713ms 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 38ms 0.4ms 2.0MB 123ms 0ms rustc 1.87.0
rust 5-m.rs 52ms 0.7ms 2.1MB 170ms 0ms rustc 1.87.0
rust 2-im.rs 61ms 2.1ms 2.1MB 207ms 0ms rustc 1.87.0
rust 1-m.rs 82ms 1.9ms 2.1MB 290ms 0ms rustc 1.87.0
rust 3-i.rs 125ms 0.7ms 1.9MB 120ms 0ms rustc 1.87.0
rust 2-i.rs 193ms 0.3ms 1.8MB 183ms 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 5c-m.rs 89ms 0.4ms 3.4MB 260ms 0ms rustc 1.87.0
rust 6.rs 89ms 0.5ms 1.9MB 80ms 0ms rustc 1.87.0
rust 5-m.rs 94ms 0.8ms 3.2MB 293ms 0ms rustc 1.87.0
rust 1c.rs 162ms 0.5ms 1.9MB 150ms 0ms rustc 1.87.0
rust 1.rs 196ms 1.0ms 1.9MB 190ms 0ms rustc 1.87.0
ruby 6.rb 2028ms 6.4ms 23.0MB 2003ms 10ms ruby/yjit 3.4.4
ruby 6-m.rb 2281ms 208ms 390.3MB 5913ms 350ms truffleruby 24.2.1
ruby 6.rb 3700ms 25ms 22.4MB 3677ms 10ms ruby 3.4.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 6.rs 12ms 1.2ms 1.9MB 10ms 0ms rustc 1.87.0
rust 5c-m.rs 16ms 0.5ms 3.2MB 27ms 0ms rustc 1.87.0
rust 5-m.rs 17ms 0.5ms 3.2MB 30ms 0ms rustc 1.87.0
rust 1c.rs 19ms 0.3ms 1.9MB 10ms 0ms rustc 1.87.0
rust 1.rs 22ms 0.4ms 2.0MB 10ms 0ms rustc 1.87.0
ruby 6.rb 302ms 71ms 15.2MB 287ms 3ms ruby/yjit 3.4.4
ruby 6.rb 419ms 3.5ms 14.5MB 400ms 3ms ruby 3.4.4
ruby 6-m.rb 825ms 52ms 388.8MB 2063ms 170ms 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 265ms 55ms 79.6MB 150ms 480ms rustc 1.87.0
rust 2-http2.rs 318ms 19ms 55.1MB 703ms 357ms rustc 1.87.0
rust 2-m.rs 354ms 23ms 73.1MB 230ms 823ms rustc 1.87.0
rust 1-http2.rs 536ms 57ms 70.0MB 1193ms 697ms rustc 1.87.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1-m.rs 40ms 9.1ms 17.4MB 20ms 53ms rustc 1.87.0
rust 2-m.rs 79ms 2.2ms 22.6MB 33ms 163ms rustc 1.87.0
rust 2-http2.rs 193ms 32ms 25.0MB 483ms 170ms rustc 1.87.0
rust 1-http2.rs 268ms 9.1ms 24.9MB 757ms 200ms 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 30ms 0.9ms 9.8MB 20ms 0ms rustc 1.87.0
rust 4-i.rs 32ms 2.3ms 7.9MB 20ms 0ms rustc 1.87.0
rust 2.rs 62ms 2.5ms 33.8MB 37ms 10ms rustc 1.87.0
rust 3.rs 64ms 2.6ms 32.0MB 43ms 10ms rustc 1.87.0
rust 1.rs 105ms 1.3ms 67.4MB 67ms 27ms rustc 1.87.0
ruby 1.rb 254ms 3.5ms 30.1MB 227ms 13ms ruby/yjit 3.4.4
ruby 1.rb 257ms 3.6ms 28.9MB 230ms 10ms ruby 3.4.4
ruby 1-m.rb 4425ms 158ms 530.8MB 11603ms 353ms 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 211ms 3.7ms 53.3MB 187ms 13ms rustc 1.87.0
rust 4-i.rs 262ms 4.6ms 54.5MB 207ms 40ms rustc 1.87.0
rust 2.rs 392ms 0.9ms 237.8MB 287ms 93ms rustc 1.87.0
rust 3.rs 405ms 5.0ms 238.1MB 307ms 83ms rustc 1.87.0
rust 1.rs 693ms 3.9ms 551.8MB 440ms 237ms rustc 1.87.0
ruby 1.rb 2081ms 8.6ms 134.5MB 1993ms 77ms ruby/yjit 3.4.4
ruby 1.rb 2099ms 21ms 133.4MB 2010ms 80ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 595.2MB 13200ms 383ms 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 222ms 6.6ms 28.0MB 630ms 17ms rustc 1.87.0
rust 8.rs 416ms 2.8ms 23.8MB 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 33ms 2.4ms 16.5MB 67ms 0ms rustc 1.87.0
rust 8.rs 55ms 0.9ms 11.4MB 40ms 3ms 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 35ms 5.1ms 1.9MB 27ms 0ms rustc 1.87.0
rust 1.rs 49ms 4.1ms 1.9MB 43ms 0ms rustc 1.87.0
ruby 1.rb 342ms 2.7ms 13.5MB 323ms 7ms ruby/yjit 3.4.4
ruby 1.rb 530ms 6.8ms 12.9MB 513ms 3ms ruby 3.4.4
ruby 1-m.rb 675ms 36ms 370.2MB 1157ms 147ms 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 143ms 28ms 1.8MB 133ms 0ms rustc 1.87.0
rust 1.rs 175ms 13ms 1.9MB 167ms 0ms rustc 1.87.0
ruby 1.rb 908ms 1.9ms 13.5MB 887ms 10ms ruby/yjit 3.4.4
ruby 1-m.rb 1250ms 4.8ms 410.5MB 1783ms 160ms truffleruby 24.2.1
ruby 1.rb 1469ms 7.6ms 12.8MB 1453ms 7ms 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 24ms 2.0ms 1.8MB 17ms 0ms rustc 1.87.0
rust 1.rs 29ms 0.5ms 1.8MB 20ms 0ms rustc 1.87.0
ruby 1.rb 202ms 6.0ms 13.5MB 183ms 7ms ruby/yjit 3.4.4
ruby 1.rb 289ms 3.4ms 12.8MB 273ms 3ms ruby 3.4.4
ruby 1-m.rb 537ms 6.4ms 359.2MB 1050ms 143ms truffleruby 24.2.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 708ms 3.5ms 33.8MB 683ms 10ms rustc 1.87.0
ruby 1-m.rb 3904ms 35ms 557.5MB 9970ms 347ms truffleruby 24.2.1
ruby 1.rb timeout 0.0ms 93.5MB 4940ms 47ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 97.2MB 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 151ms 2.0ms 9.8MB 140ms 0ms rustc 1.87.0
ruby 1-m.rb 2022ms 35ms 597.2MB 5207ms 257ms truffleruby 24.2.1
ruby 1.rb 3278ms 18ms 38.4MB 3243ms 20ms ruby/yjit 3.4.4
ruby 1.rb 4357ms 20ms 37.6MB 4323ms 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 317ms 11ms 40.9MB 300ms 0ms rustc 1.87.0
rust 2.rs 318ms 4.7ms 6.6MB 307ms 0ms rustc 1.87.0
ruby 1.rb timeout 0.0ms 325.3MB 4850ms 137ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 327.0MB 4840ms 140ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 726.3MB 5057ms 167ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 60ms 1.5ms 11.6MB 50ms 0ms rustc 1.87.0
rust 2.rs 78ms 0.2ms 2.9MB 70ms 0ms rustc 1.87.0
ruby 1-m.rb 1705ms 21ms 478.0MB 2453ms 170ms truffleruby 24.2.1
ruby 1.rb 4023ms 798ms 131.8MB 3930ms 73ms ruby/yjit 3.4.4
ruby 1.rb 4558ms 108ms 131.0MB 4463ms 80ms ruby 3.4.4

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1525ms 8.2ms 2.7MB 1313ms 190ms rustc 1.87.0
rust 2.rs 1715ms 7.5ms 2.7MB 1627ms 73ms rustc 1.87.0
ruby 1.rb timeout 0.0ms 130.2MB 4873ms 113ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 131.1MB 4867ms 123ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 456.7MB 13337ms 400ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 326ms 2.2ms 2.4MB 303ms 7ms rustc 1.87.0
rust 2.rs 382ms 2.7ms 2.4MB 370ms 0ms rustc 1.87.0
ruby 1-m.rb 1742ms 229ms 407.7MB 4603ms 207ms truffleruby 24.2.1
ruby 1.rb 1798ms 73ms 130.1MB 1690ms 93ms ruby 3.4.4
ruby 1.rb 1828ms 6.0ms 131.0MB 1690ms 123ms ruby/yjit 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 442ms 4.0ms 78.6MB 450ms 17ms rustc 1.87.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 51ms 1.5ms 11.6MB 43ms 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 116ms 0.3ms 1.8MB 110ms 0ms rustc 1.87.0
rust 1.rs 1414ms 10ms 1.9MB 1403ms 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 1.5ms 1.9MB 23ms 0ms rustc 1.87.0
rust 1.rs 359ms 5.0ms 1.9MB 350ms 0ms rustc 1.87.0