Programming Language and compiler
Benchmarks

Nim VS Ruby benchmarks

Current benchmark data was generated on Mon May 19 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 836ms 40ms 34.9MB 817ms 7ms nim 2.2.4
nim 2.nim 971ms 5.9ms 35.2MB 953ms 3ms nim/clang 2.2.4
ruby 1-m.rb 4550ms 58ms 807.5MB 6423ms 470ms truffleruby 24.2.1
ruby 1.rb 4702ms 91ms 150.6MB 4603ms 87ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 70.4MB 4947ms 40ms ruby 3.4.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 77ms 1.2ms 5.5MB 70ms 0ms nim 2.2.4
nim 2.nim 93ms 2.7ms 5.8MB 80ms 0ms nim/clang 2.2.4
ruby 1.rb 493ms 7.5ms 20.3MB 467ms 10ms ruby/yjit 3.4.4
ruby 1-m.rb 536ms 62ms 418.0MB 1057ms 167ms truffleruby 24.2.1
ruby 1.rb 939ms 7.1ms 19.5MB 917ms 13ms ruby 3.4.4

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 1437ms 31ms 63.8MB 1357ms 67ms ruby/yjit 3.4.4
ruby 1.rb 1867ms 6.6ms 63.0MB 1790ms 63ms ruby 3.4.4
nim 1.nim timeout 0.0ms 575.4MB 2623ms 1900ms nim 2.2.4
nim 1.nim timeout 0.0ms 575.7MB 2560ms 1967ms nim/clang 2.2.4
ruby 1.rb timeout 0.0ms 340.6MB 4643ms 1510ms truffleruby 24.2.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 152ms 2.8ms 25.8MB 120ms 20ms ruby/yjit 3.4.4
ruby 1.rb 181ms 2.5ms 25.0MB 147ms 17ms ruby 3.4.4
nim 1.nim 4094ms 5.6ms 519.3MB 2117ms 1553ms nim 2.2.4
nim 1.nim 4109ms 27ms 518.7MB 2100ms 1580ms nim/clang 2.2.4
ruby 1.rb timeout 0.0ms 353.7MB 4770ms 1417ms truffleruby 24.2.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 188ms 2.8ms 1.5MB 180ms 0ms nim 2.2.4
nim 2.nim 243ms 2.1ms 1.8MB 230ms 0ms nim/clang 2.2.4
nim 1.nim 533ms 0.9ms 1.8MB 453ms 67ms nim/clang 2.2.4
nim 1.nim 557ms 2.9ms 1.5MB 470ms 73ms nim 2.2.4
ruby 6.rb 2027ms 13ms 23.0MB 1997ms 10ms ruby/yjit 3.4.4
ruby 6-m.rb 2068ms 126ms 407.9MB 5310ms 330ms truffleruby 24.2.1
ruby 6.rb 3712ms 34ms 22.4MB 3683ms 13ms ruby 3.4.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 22ms 0.7ms 1.5MB 10ms 0ms nim 2.2.4
nim 2.nim 27ms 1.0ms 1.8MB 20ms 0ms nim/clang 2.2.4
nim 1.nim 56ms 0.8ms 1.8MB 43ms 0ms nim/clang 2.2.4
nim 1.nim 59ms 1.8ms 1.5MB 40ms 3ms nim 2.2.4
ruby 6.rb 259ms 3.2ms 15.2MB 237ms 7ms ruby/yjit 3.4.4
ruby 6.rb 421ms 2.0ms 14.4MB 400ms 7ms ruby 3.4.4
ruby 6-m.rb 817ms 16ms 366.6MB 2047ms 163ms truffleruby 24.2.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.0ms 0.0ms 1.6MB 0ms 0ms nim 2.2.4
nim 1.nim 1.1ms 0.0ms 1.9MB 0ms 0ms nim/clang 2.2.4
ruby 1.rb 35ms 0.5ms 141.3MB 14ms 24ms truffleruby 24.2.1
ruby 1.rb 51ms 1.3ms 12.9MB 36ms 2ms ruby/yjit 3.4.4
ruby 1.rb 51ms 1.6ms 12.8MB 38ms 4ms ruby 3.4.4

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 110ms 1.5ms 1.6MB 100ms 0ms nim/clang 2.2.4
nim 2.nim 114ms 1.4ms 1.4MB 107ms 0ms nim 2.2.4
ruby 1.rb 346ms 5.9ms 13.5MB 327ms 7ms ruby/yjit 3.4.4
ruby 1.rb 528ms 2.9ms 12.9MB 510ms 10ms ruby 3.4.4
ruby 1-m.rb 672ms 40ms 371.0MB 1197ms 137ms truffleruby 24.2.1
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 325ms 2.6ms 1.6MB 317ms 0ms nim/clang 2.2.4
nim 2.nim 336ms 4.1ms 1.4MB 327ms 0ms nim 2.2.4
ruby 1.rb 910ms 1.8ms 13.5MB 890ms 3ms ruby/yjit 3.4.4
ruby 1-m.rb 1245ms 2.3ms 411.8MB 1757ms 167ms truffleruby 24.2.1
ruby 1.rb 1482ms 5.6ms 12.9MB 1460ms 10ms ruby 3.4.4
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 50ms 1.8ms 1.5MB 40ms 0ms nim/clang 2.2.4
nim 2.nim 52ms 1.0ms 1.3MB 43ms 0ms nim 2.2.4
ruby 1.rb 197ms 3.9ms 13.4MB 183ms 3ms ruby/yjit 3.4.4
ruby 1.rb 290ms 4.2ms 12.8MB 273ms 0ms ruby 3.4.4
nim 1.nim 482ms 4.8ms 1.3MB 477ms 0ms nim 2.2.4
nim 1.nim 488ms 14ms 1.5MB 477ms 0ms nim/clang 2.2.4
ruby 1-m.rb 503ms 50ms 362.6MB 967ms 137ms truffleruby 24.2.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 387ms 0.4ms 4.8MB 380ms 0ms nim/clang 2.2.4
nim 1.nim 576ms 1.5ms 4.5MB 563ms 0ms nim 2.2.4

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 19ms 0.5ms 1.9MB 10ms 0ms nim/clang 2.2.4
nim 1.nim 27ms 1.2ms 1.6MB 20ms 0ms nim 2.2.4

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 552ms 1.9ms 34.9MB 530ms 7ms nim 2.2.4
nim 1.nim 634ms 34ms 35.2MB 613ms 10ms nim/clang 2.2.4
ruby 1-m.rb 3839ms 65ms 570.9MB 9800ms 350ms truffleruby 24.2.1
ruby 1.rb timeout 0.0ms 94.1MB 4943ms 47ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 97.2MB 4943ms 43ms ruby/yjit 3.4.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 120ms 2.4ms 9.6MB 110ms 0ms nim 2.2.4
nim 1.nim 135ms 2.2ms 9.9MB 123ms 0ms nim/clang 2.2.4
ruby 1-m.rb 2093ms 126ms 535.8MB 5357ms 270ms truffleruby 24.2.1
ruby 1.rb 3224ms 7.7ms 38.3MB 3190ms 17ms ruby/yjit 3.4.4
ruby 1.rb 4324ms 12ms 37.6MB 4293ms 13ms ruby 3.4.4

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 319ms 1.7ms 1.8MB 310ms 0ms nim 2.2.4
nim 2.nim 340ms 0.5ms 2.0MB 330ms 0ms nim/clang 2.2.4
ruby 2.rb 816ms 4.0ms 312.1MB 1050ms 113ms truffleruby 24.2.1
ruby 2.rb timeout 0.0ms 12.8MB 4987ms 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
nim 2.nim 35ms 1.0ms 1.8MB 30ms 0ms nim 2.2.4
nim 2.nim 40ms 6.2ms 2.0MB 33ms 0ms nim/clang 2.2.4
ruby 2-m.rb 308ms 14ms 317.9MB 567ms 110ms truffleruby 24.2.1
ruby 2.rb 1025ms 1.2ms 13.5MB 1003ms 10ms ruby/yjit 3.4.4
ruby 2.rb 2921ms 95ms 12.8MB 2903ms 3ms ruby 3.4.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 267ms 0.8ms 41.5MB 253ms 0ms nim 2.2.4
nim 1.nim 314ms 3.5ms 41.8MB 303ms 0ms nim/clang 2.2.4
ruby 1.rb timeout 0.0ms 325.3MB 4857ms 133ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 327.0MB 4853ms 130ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 732.0MB 5073ms 150ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 1.1ms 11.6MB 40ms 0ms nim 2.2.4
nim 1.nim 63ms 1.6ms 11.8MB 53ms 0ms nim/clang 2.2.4
ruby 1-m.rb 1691ms 6.2ms 486.6MB 2437ms 163ms truffleruby 24.2.1
ruby 1.rb 3458ms 150ms 131.6MB 3363ms 80ms ruby/yjit 3.4.4
ruby 1.rb 4471ms 23ms 131.1MB 4383ms 73ms ruby 3.4.4

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1651ms 5.5ms 151.9MB 1620ms 13ms nim/clang 2.2.4
nim 1.nim 1683ms 16ms 152.1MB 1650ms 20ms nim 2.2.4

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 3.4ms 17.6MB 160ms 0ms nim/clang 2.2.4
nim 1.nim 176ms 3.6ms 17.2MB 163ms 0ms nim 2.2.4

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 3587ms 2.7ms 1.6MB 3580ms 0ms nim/clang 2.2.4
nim 1.nim 3610ms 12ms 1.4MB 3597ms 0ms nim 2.2.4
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 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 442.8MB 5163ms 247ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 899ms 0.8ms 1.5MB 890ms 0ms nim/clang 2.2.4
nim 1.nim 902ms 1.4ms 1.3MB 893ms 0ms nim 2.2.4
ruby 4.rb 4839ms 22ms 427.6MB 5120ms 207ms 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 4983ms 3ms ruby/yjit 3.4.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 226ms 0.1ms 1.5MB 220ms 0ms nim/clang 2.2.4
nim 1.nim 229ms 1.9ms 1.3MB 220ms 0ms nim 2.2.4
ruby 4.rb 1449ms 47ms 375.2MB 1810ms 133ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 0ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 7ms ruby/yjit 3.4.4