Programming Language and compiler
Benchmarks

Ruby VS Python benchmarks

Current benchmark data was generated on Mon Mar 31 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
python 1.py 1210ms 7.0ms 96.2MB 1147ms 47ms pypy 3.10.16
ruby 1.rb 4874ms 16ms 109.4MB 4770ms 90ms ruby/yjit 3.4.2
python 1.py timeout 0.0ms 40.8MB 4963ms 20ms cpython 3.13.2
python 1.py timeout 0.0ms 40.5MB 4747ms 240ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 70.1MB 4937ms 43ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 793.7MB 6597ms 650ms truffleruby 24.2.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 95ms 1.1ms 68.8MB 67ms 17ms pypy 3.10.16
python 1.py 479ms 4.3ms 11.9MB 453ms 10ms pyston 3.8.12
ruby 1.rb 494ms 2.7ms 20.3MB 470ms 10ms ruby/yjit 3.4.2
ruby 1-m.rb 575ms 60ms 422.2MB 1147ms 167ms truffleruby 24.2.0
python 1.py 718ms 7.5ms 12.6MB 703ms 0ms cpython 3.13.2
ruby 1.rb 937ms 6.7ms 19.6MB 910ms 13ms ruby 3.4.2

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1217ms 27ms 107.0MB 1170ms 30ms pypy 3.10.16
ruby 1.rb 1478ms 22ms 63.8MB 1397ms 67ms ruby/yjit 3.4.2
ruby 1.rb 1855ms 2.6ms 63.1MB 1780ms 60ms ruby 3.4.2
python 1.py 2643ms 6.3ms 25.0MB 2620ms 13ms cpython 3.13.2
python 1.py timeout 0.0ms 17.3MB 4980ms 7ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 347.0MB 4763ms 1433ms truffleruby 24.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 159ms 1.0ms 25.6MB 127ms 17ms ruby/yjit 3.4.2
ruby 1.rb 185ms 1.3ms 25.1MB 153ms 17ms ruby 3.4.2
python 1.py 224ms 3.9ms 86.3MB 190ms 20ms pypy 3.10.16
python 1.py 228ms 1.1ms 20.2MB 207ms 10ms cpython 3.13.2
python 1.py 685ms 12ms 16.8MB 667ms 7ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 353.2MB 4600ms 1553ms truffleruby 24.2.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1852ms 1.6ms 88.8MB 1807ms 30ms pypy 3.10.16
ruby 6.rb 2060ms 10ms 23.0MB 2030ms 13ms ruby/yjit 3.4.2
ruby 6-m.rb 2165ms 97ms 405.7MB 5593ms 363ms truffleruby 24.2.0
python 5-m.py 2282ms 30ms 65.4MB 3493ms 843ms pypy 3.10.16
python 5-m.py 2455ms 13ms 12.5MB 3537ms 1010ms pyston 3.8.12
python 1.py 3017ms 14ms 8.1MB 3007ms 0ms pyston 3.8.12
python 5-m.py 3351ms 11ms 13.5MB 4443ms 913ms cpython 3.13.2
ruby 6.rb 3848ms 36ms 22.5MB 3820ms 10ms ruby 3.4.2
python 1.py 4656ms 26ms 8.8MB 4640ms 0ms cpython 3.13.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 251ms 5.7ms 63.3MB 223ms 13ms pypy 3.10.16
ruby 6.rb 266ms 4.3ms 15.0MB 247ms 10ms ruby/yjit 3.4.2
python 5-m.py 311ms 1.4ms 12.4MB 393ms 143ms pyston 3.8.12
python 1.py 318ms 0.3ms 8.1MB 310ms 0ms pyston 3.8.12
python 5-m.py 397ms 5.6ms 13.6MB 480ms 133ms cpython 3.13.2
ruby 6.rb 437ms 2.4ms 14.5MB 420ms 7ms ruby 3.4.2
python 5-m.py 445ms 6.3ms 65.4MB 737ms 310ms pypy 3.10.16
python 1.py 488ms 7.2ms 8.6MB 477ms 0ms cpython 3.13.2
ruby 6-m.rb 815ms 10ms 363.4MB 2020ms 177ms truffleruby 24.2.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 11ms 0.5ms 7.6MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.0ms 8.6MB 10ms 0ms cpython 3.13.2
python 1.py 29ms 1.1ms 51.6MB 10ms 10ms pypy 3.10.16
ruby 1.rb 35ms 0.4ms 142.2MB 14ms 28ms truffleruby 24.2.0
ruby 1.rb 52ms 3.5ms 12.9MB 34ms 2ms ruby 3.4.2
ruby 1.rb 53ms 0.9ms 13.0MB 34ms 6ms ruby/yjit 3.4.2

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 194ms 6.5ms 38.4MB 163ms 20ms pyston 3.8.12
python 1.py 214ms 1.4ms 38.6MB 187ms 13ms cpython 3.13.2
ruby 1.rb 252ms 3.6ms 29.1MB 220ms 20ms ruby 3.4.2
ruby 1.rb 256ms 3.5ms 28.4MB 227ms 17ms ruby/yjit 3.4.2
python 1.py 298ms 2.7ms 89.5MB 260ms 20ms pypy 3.10.16
ruby 1-m.rb 4493ms 172ms 518.1MB 11833ms 350ms truffleruby 24.2.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1815ms 17ms 220.5MB 1643ms 160ms pyston 3.8.12
python 1.py 1915ms 31ms 222.2MB 1830ms 73ms pypy 3.10.16
python 1.py 1927ms 7.1ms 221.4MB 1830ms 87ms cpython 3.13.2
ruby 1.rb 2091ms 5.7ms 132.7MB 2000ms 77ms ruby 3.4.2
ruby 1.rb 2116ms 29ms 135.1MB 2017ms 83ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 495.0MB 13197ms 370ms truffleruby 24.2.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 144ms 0.5ms 58.3MB 120ms 10ms pypy 3.10.16
python 1.py 179ms 2.6ms 59.4MB 157ms 10ms pypy 3.10.16
ruby 1.rb 338ms 2.7ms 13.5MB 320ms 7ms ruby/yjit 3.4.2
ruby 1.rb 534ms 7.9ms 13.0MB 517ms 7ms ruby 3.4.2
ruby 1-m.rb 679ms 33ms 375.8MB 1217ms 147ms truffleruby 24.2.0
python 1.py 719ms 5.8ms 8.9MB 707ms 0ms pyston 3.8.12
python 2.py 833ms 11ms 8.5MB 820ms 0ms pyston 3.8.12
python 1.py 1138ms 4.4ms 9.4MB 1127ms 0ms cpython 3.13.2
python 2.py 1348ms 40ms 9.0MB 1337ms 0ms cpython 3.13.2

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 338ms 2.7ms 59.3MB 320ms 3ms pypy 3.10.16
python 1.py 380ms 6.1ms 60.3MB 353ms 10ms pypy 3.10.16
ruby 1.rb 880ms 3.0ms 13.5MB 857ms 7ms ruby/yjit 3.4.2
ruby 1-m.rb 1252ms 51ms 416.2MB 1803ms 183ms truffleruby 24.2.0
ruby 1.rb 1490ms 12ms 13.0MB 1470ms 7ms ruby 3.4.2
python 1.py 2132ms 18ms 8.9MB 2123ms 0ms pyston 3.8.12
python 2.py 2501ms 6.7ms 8.5MB 2490ms 0ms pyston 3.8.12
python 1.py 3370ms 28ms 9.4MB 3357ms 0ms cpython 3.13.2
python 2.py 3950ms 27ms 9.0MB 3937ms 0ms cpython 3.13.2

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 106ms 5.2ms 57.9MB 83ms 10ms pypy 3.10.16
python 1.py 122ms 1.9ms 58.7MB 100ms 10ms pypy 3.10.16
ruby 1.rb 196ms 2.7ms 13.5MB 177ms 7ms ruby/yjit 3.4.2
ruby 1.rb 292ms 5.2ms 12.9MB 273ms 0ms ruby 3.4.2
python 1.py 348ms 6.0ms 8.5MB 333ms 0ms pyston 3.8.12
python 2.py 387ms 2.2ms 8.1MB 373ms 0ms pyston 3.8.12
ruby 1-m.rb 513ms 36ms 360.4MB 1000ms 140ms truffleruby 24.2.0
python 1.py 539ms 4.9ms 9.0MB 523ms 0ms cpython 3.13.2
python 2.py 634ms 5.0ms 8.6MB 623ms 0ms cpython 3.13.2

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2202ms 10ms 203.1MB 2083ms 107ms pypy 3.10.16
ruby 1-m.rb 4071ms 251ms 628.9MB 10250ms 363ms truffleruby 24.2.0
python 1.py timeout 0.0ms 93.9MB 4950ms 40ms cpython 3.13.2
python 1.py timeout 0.0ms 130.4MB 4940ms 50ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 94.3MB 4930ms 50ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 94.8MB 4937ms 50ms ruby/yjit 3.4.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 377ms 5.4ms 105.2MB 323ms 40ms pypy 3.10.16
ruby 1-m.rb 2113ms 104ms 582.3MB 5393ms 277ms truffleruby 24.2.0
python 1.py 3111ms 151ms 37.2MB 3083ms 13ms cpython 3.13.2
ruby 1.rb 3439ms 28ms 38.3MB 3403ms 23ms ruby/yjit 3.4.2
ruby 1.rb 4410ms 17ms 37.8MB 4373ms 23ms ruby 3.4.2
python 1.py timeout 0.0ms 48.9MB 4940ms 43ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 2.rb 830ms 8.7ms 322.7MB 1090ms 113ms truffleruby 24.2.0
python 2.py 1353ms 7.7ms 60.3MB 1330ms 10ms pypy 3.10.16
python 1.py 2647ms 8.4ms 57.2MB 2623ms 10ms pypy 3.10.16
python 1.py timeout 0.0ms 8.6MB 4990ms 0ms cpython 3.13.2
python 2.py timeout 0.0ms 8.8MB 4990ms 0ms cpython 3.13.2
python 1.py timeout 0.0ms 8.3MB 4990ms 0ms pyston 3.8.12
python 2.py timeout 0.0ms 8.1MB 4990ms 0ms pyston 3.8.12
ruby 2.rb timeout 0.0ms 12.9MB 4987ms 0ms ruby 3.4.2
ruby 2.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 182ms 1.3ms 58.1MB 160ms 10ms pypy 3.10.16
python 1.py 299ms 2.7ms 57.1MB 280ms 10ms pypy 3.10.16
ruby 2-m.rb 310ms 2.6ms 310.1MB 543ms 113ms truffleruby 24.2.0
python 1.py 932ms 16ms 8.3MB 920ms 0ms pyston 3.8.12
ruby 2.rb 1066ms 0.5ms 13.5MB 1047ms 3ms ruby/yjit 3.4.2
python 2.py 1282ms 11ms 8.3MB 1270ms 0ms pyston 3.8.12
ruby 2.rb 2789ms 66ms 12.9MB 2773ms 0ms ruby 3.4.2
python 1.py 2968ms 4.6ms 8.8MB 2953ms 0ms cpython 3.13.2
python 2.py 3214ms 99ms 8.8MB 3200ms 0ms cpython 3.13.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2527ms 58ms 369.5MB 2457ms 57ms pypy 3.10.16
python 2.py 3022ms 8.2ms 633.0MB 2873ms 137ms pyston 3.8.12
python 1.py 4719ms 120ms 320.4MB 4657ms 50ms pyston 3.8.12
python 1.py timeout 0.0ms 321.1MB 4960ms 27ms cpython 3.13.2
python 2.py timeout 0.0ms 633.6MB 4843ms 143ms cpython 3.13.2
python 2.py timeout 0.0ms 959.8MB 4730ms 260ms pypy 3.10.16
ruby 1.rb timeout 0.0ms 325.4MB 4847ms 140ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 327.0MB 4853ms 137ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 709.5MB 5073ms 150ms truffleruby 24.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 524ms 3.5ms 135.2MB 490ms 20ms pypy 3.10.16
python 2.py 734ms 1.6ms 164.2MB 697ms 27ms pyston 3.8.12
python 1.py 1045ms 7.6ms 86.0MB 1023ms 10ms pyston 3.8.12
python 2.py 1423ms 16ms 164.8MB 1380ms 30ms cpython 3.13.2
python 2.py 1530ms 19ms 290.2MB 1440ms 77ms pypy 3.10.16
ruby 1-m.rb 1735ms 26ms 487.2MB 2477ms 167ms truffleruby 24.2.0
python 1.py 2661ms 20ms 86.8MB 2640ms 10ms cpython 3.13.2
ruby 1.rb 3439ms 35ms 131.8MB 3347ms 77ms ruby/yjit 3.4.2
ruby 1.rb 4550ms 60ms 131.1MB 4463ms 77ms ruby 3.4.2

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1915ms 5.6ms 8.9MB 1873ms 30ms pyston 3.8.12
python 4.py 1945ms 3.8ms 9.4MB 1893ms 40ms cpython 3.13.2
python 4.py 2174ms 1.1ms 89.4MB 2133ms 30ms pypy 3.10.16
ruby 1.rb timeout 0.0ms 46.7MB 4923ms 67ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 126.8MB 4890ms 100ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 457.8MB 13330ms 427ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 451ms 0.7ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 468ms 3.4ms 9.0MB 457ms 0ms cpython 3.13.2
python 4.py 549ms 3.3ms 83.8MB 513ms 20ms pypy 3.10.16
ruby 1-m.rb 1582ms 157ms 399.4MB 4173ms 207ms truffleruby 24.2.0
ruby 1.rb 1703ms 3.1ms 46.2MB 1657ms 33ms ruby 3.4.2
ruby 1.rb 1706ms 60ms 127.5MB 1643ms 50ms ruby/yjit 3.4.2

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 8.py timeout 0.0ms 14.9MB 40ms 10ms cpython 3.13.2
python 8.py timeout 0.0ms 95.4MB 790ms 77ms pypy 3.10.16
python 8.py timeout 0.0ms 14.2MB 37ms 13ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.2
ruby 4.rb timeout 0.0ms 463.4MB 5177ms 250ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 4.rb 4892ms 24ms 472.1MB 5177ms 213ms truffleruby 24.2.0
python 8.py timeout 0.0ms 14.4MB 43ms 10ms cpython 3.13.2
python 8.py timeout 0.0ms 96.7MB 1313ms 177ms pypy 3.10.16
python 8.py timeout 0.0ms 13.7MB 53ms 20ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 13.0MB 4980ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 0ms ruby/yjit 3.4.2

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 4.rb 1453ms 12ms 389.8MB 1777ms 143ms truffleruby 24.2.0
python 8-m.py 1974ms 19ms 92.9MB 6383ms 260ms pypy 3.10.16
python 8.py timeout 0.0ms 14.0MB 90ms 20ms cpython 3.13.2
python 8.py timeout 0.0ms 13.1MB 123ms 37ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 13.0MB 4980ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.8MB 4983ms 0ms ruby/yjit 3.4.2