Programming Language and compiler
Benchmarks

Python 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1209ms 11ms 96.2MB 1140ms 50ms pypy 3.10.16
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
python 1.py timeout 0.0ms 40.9MB 4973ms 13ms cpython 3.13.3
python 1.py timeout 0.0ms 40.7MB 4747ms 240ms pyston 3.8.12
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
python 1.py 97ms 3.0ms 68.8MB 70ms 13ms pypy 3.10.16
python 1.py 478ms 6.6ms 11.9MB 453ms 13ms pyston 3.8.12
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
python 1.py 737ms 8.4ms 12.8MB 723ms 0ms cpython 3.13.3
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
python 1.py 1242ms 23ms 105.6MB 1193ms 33ms pypy 3.10.16
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
python 1.py 2750ms 1.9ms 25.2MB 2727ms 10ms cpython 3.13.3
python 1.py timeout 0.0ms 17.3MB 4983ms 7ms pyston 3.8.12
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
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
python 1.py 225ms 3.8ms 84.6MB 183ms 30ms pypy 3.10.16
python 1.py 234ms 2.3ms 20.5MB 210ms 10ms cpython 3.13.3
python 1.py 668ms 16ms 16.8MB 647ms 7ms pyston 3.8.12
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
python 1.py 251ms 2.2ms 83.2MB 213ms 23ms pypy 3.10.16
python 1.py 358ms 2.4ms 12.7MB 347ms 0ms cpython 3.13.3
python 1.py 2006ms 9.8ms 9.6MB 1993ms 0ms pyston 3.8.12

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 100ms 0.5ms 63.4MB 73ms 13ms pypy 3.10.16
python 1.py 139ms 54ms 12.4MB 100ms 0ms cpython 3.13.3
python 1.py 349ms 2.4ms 8.8MB 330ms 0ms pyston 3.8.12

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1886ms 8.1ms 88.9MB 1843ms 30ms pypy 3.10.16
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
python 5-m.py 2274ms 5.2ms 65.6MB 3513ms 847ms pypy 3.10.16
python 5-m.py 2449ms 16ms 12.4MB 3560ms 1017ms pyston 3.8.12
python 1.py 3024ms 34ms 8.1MB 3010ms 0ms pyston 3.8.12
python 5-m.py 3346ms 15ms 13.8MB 4457ms 907ms cpython 3.13.3
ruby 6.rb 3691ms 14ms 22.4MB 3667ms 10ms ruby 3.4.4
python 1.py 4648ms 12ms 8.9MB 4633ms 0ms cpython 3.13.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 6.rb 255ms 2.3ms 15.2MB 240ms 0ms ruby/yjit 3.4.4
python 1.py 256ms 4.3ms 63.4MB 230ms 13ms pypy 3.10.16
python 1.py 315ms 2.3ms 8.1MB 300ms 0ms pyston 3.8.12
python 5-m.py 319ms 6.7ms 12.5MB 417ms 150ms pyston 3.8.12
python 5-m.py 398ms 1.9ms 13.9MB 473ms 137ms cpython 3.13.3
ruby 6.rb 420ms 5.4ms 14.5MB 403ms 0ms ruby 3.4.4
python 5-m.py 445ms 4.8ms 65.6MB 737ms 310ms pypy 3.10.16
python 1.py 494ms 9.3ms 8.9MB 483ms 0ms cpython 3.13.3
ruby 6-m.rb 729ms 109ms 365.6MB 1803ms 163ms truffleruby 24.2.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 12ms 0.9ms 7.6MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.3ms 8.6MB 10ms 0ms cpython 3.13.3
python 1.py 29ms 1.0ms 51.7MB 10ms 8ms pypy 3.10.16
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

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2196ms 97ms 27.0MB 1093ms 1400ms pyston 3.8.12
python 1.py 2303ms 111ms 27.5MB 1587ms 1423ms cpython 3.13.3
python 1.py 4543ms 1.6ms 101.8MB 2897ms 1107ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1106ms 34ms 22.8MB 307ms 247ms cpython 3.13.3
python 1.py 1170ms 149ms 21.3MB 237ms 247ms pyston 3.8.12
python 1.py 1580ms 287ms 86.0MB 717ms 220ms pypy 3.10.16

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 201ms 2.9ms 38.2MB 170ms 20ms pyston 3.8.12
python 1.py 217ms 3.3ms 38.6MB 193ms 10ms cpython 3.13.3
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
python 1.py 303ms 4.4ms 88.7MB 267ms 27ms pypy 3.10.16
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
python 1.py 1846ms 14ms 220.5MB 1683ms 150ms pyston 3.8.12
python 1.py 1926ms 22ms 223.4MB 1847ms 67ms pypy 3.10.16
python 1.py 1927ms 18ms 221.3MB 1823ms 87ms cpython 3.13.3
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
python 3-m.py 2576ms 18ms 136.5MB 8740ms 333ms pypy 3.10.16
python 3-m.py 3287ms 36ms 34.0MB 12567ms 110ms pyston 3.8.12
python 3.py timeout 0.0ms 35.3MB 97ms 13ms cpython 3.13.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 3-m.py 399ms 1.9ms 75.8MB 1023ms 157ms pypy 3.10.16
python 3-m.py 410ms 3.4ms 14.2MB 1370ms 67ms pyston 3.8.12
python 3-m.py 663ms 5.8ms 15.2MB 2337ms 63ms cpython 3.13.3

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 149ms 4.3ms 58.4MB 120ms 13ms pypy 3.10.16
python 1.py 181ms 4.1ms 59.4MB 157ms 10ms pypy 3.10.16
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
python 1.py 720ms 3.1ms 8.9MB 707ms 0ms pyston 3.8.12
python 2.py 844ms 8.9ms 8.5MB 830ms 0ms pyston 3.8.12
python 1.py 1166ms 4.3ms 9.5MB 1157ms 0ms cpython 3.13.3
python 2.py 1359ms 24ms 9.1MB 1347ms 0ms cpython 3.13.3

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 342ms 3.7ms 59.1MB 320ms 10ms pypy 3.10.16
python 1.py 395ms 7.5ms 60.4MB 367ms 13ms pypy 3.10.16
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
python 1.py 2150ms 11ms 8.9MB 2140ms 0ms pyston 3.8.12
python 2.py 2522ms 10ms 8.5MB 2513ms 0ms pyston 3.8.12
python 1.py 3503ms 80ms 9.5MB 3490ms 0ms cpython 3.13.3
python 2.py 4083ms 116ms 9.1MB 4070ms 0ms cpython 3.13.3

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 107ms 3.5ms 58.2MB 83ms 10ms pypy 3.10.16
python 1.py 123ms 2.2ms 58.8MB 100ms 10ms pypy 3.10.16
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
python 1.py 352ms 1.5ms 8.5MB 340ms 0ms pyston 3.8.12
python 2.py 384ms 4.5ms 8.1MB 373ms 0ms pyston 3.8.12
ruby 1-m.rb 532ms 4.1ms 356.3MB 1023ms 140ms truffleruby 24.2.1
python 1.py 548ms 3.1ms 9.3MB 537ms 0ms cpython 3.13.3
python 2.py 667ms 2.4ms 8.8MB 653ms 0ms cpython 3.13.3

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2223ms 4.3ms 202.6MB 2110ms 100ms pypy 3.10.16
ruby 1-m.rb 4042ms 349ms 544.7MB 10327ms 353ms truffleruby 24.2.1
python 1.py timeout 0.0ms 94.0MB 4950ms 37ms cpython 3.13.3
python 1.py timeout 0.0ms 130.4MB 4933ms 53ms pyston 3.8.12
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
python 1.py 380ms 0.7ms 104.8MB 320ms 43ms pypy 3.10.16
ruby 1-m.rb 2018ms 52ms 569.1MB 5267ms 243ms truffleruby 24.2.1
python 1.py 2901ms 23ms 37.3MB 2873ms 13ms cpython 3.13.3
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
python 1.py timeout 0.0ms 48.9MB 4943ms 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 823ms 8.8ms 310.2MB 1070ms 110ms truffleruby 24.2.1
python 2.py 1361ms 8.4ms 60.3MB 1333ms 10ms pypy 3.10.16
python 1.py 2648ms 10ms 57.1MB 2623ms 10ms pypy 3.10.16
python 1.py timeout 0.0ms 8.9MB 4990ms 0ms cpython 3.13.3
python 2.py timeout 0.0ms 8.9MB 4990ms 0ms cpython 3.13.3
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 12.8MB 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
python 2.py 180ms 3.2ms 58.1MB 153ms 13ms pypy 3.10.16
python 1.py 303ms 4.6ms 57.1MB 280ms 10ms pypy 3.10.16
ruby 2-m.rb 323ms 5.2ms 325.5MB 593ms 110ms truffleruby 24.2.1
python 1.py 943ms 20ms 8.3MB 933ms 0ms pyston 3.8.12
ruby 2.rb 1025ms 6.4ms 13.5MB 1010ms 3ms ruby/yjit 3.4.4
python 2.py 1311ms 6.8ms 8.3MB 1300ms 0ms pyston 3.8.12
ruby 2.rb 2919ms 94ms 12.8MB 2903ms 3ms ruby 3.4.4
python 1.py 3029ms 49ms 8.9MB 3017ms 0ms cpython 3.13.3
python 2.py 3194ms 81ms 8.9MB 3183ms 0ms cpython 3.13.3

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2510ms 35ms 369.7MB 2443ms 53ms pypy 3.10.16
python 2.py 3001ms 11ms 632.9MB 2817ms 167ms pyston 3.8.12
python 1.py 4815ms 106ms 320.4MB 4753ms 47ms pyston 3.8.12
python 1.py timeout 0.0ms 321.4MB 4960ms 23ms cpython 3.13.3
python 2.py timeout 0.0ms 633.8MB 4820ms 160ms cpython 3.13.3
python 2.py timeout 0.0ms 959.9MB 4717ms 273ms pypy 3.10.16
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
python 1.py 534ms 6.8ms 135.3MB 497ms 20ms pypy 3.10.16
python 2.py 727ms 14ms 164.2MB 683ms 27ms pyston 3.8.12
python 1.py 1059ms 9.9ms 86.0MB 1033ms 10ms pyston 3.8.12
python 2.py 1436ms 9.3ms 165.0MB 1393ms 27ms cpython 3.13.3
python 2.py 1518ms 1.3ms 290.1MB 1430ms 73ms pypy 3.10.16
ruby 1-m.rb 1696ms 5.1ms 473.6MB 2500ms 160ms truffleruby 24.2.1
python 1.py 2777ms 67ms 87.0MB 2753ms 10ms cpython 3.13.3
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
python 4.py 1909ms 6.7ms 9.0MB 1870ms 27ms pyston 3.8.12
python 4.py 1984ms 4.8ms 9.4MB 1933ms 37ms cpython 3.13.3
python 4.py 2200ms 2.7ms 89.4MB 2163ms 20ms pypy 3.10.16
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
python 4.py 452ms 2.1ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 475ms 3.4ms 9.1MB 463ms 0ms cpython 3.13.3
python 4.py 549ms 4.9ms 83.9MB 513ms 20ms pypy 3.10.16
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
python 1.py 2247ms 6.5ms 243.1MB 2183ms 50ms pypy 3.10.16
python 1.py 4720ms 8.5ms 226.6MB 4537ms 167ms pyston 3.8.12
python 1.py timeout 0.0ms 150.6MB 4930ms 53ms cpython 3.13.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 335ms 3.2ms 85.4MB 297ms 23ms pypy 3.10.16
python 1.py 496ms 2.1ms 30.3MB 457ms 27ms pyston 3.8.12
python 1.py 613ms 9.2ms 29.9MB 583ms 17ms cpython 3.13.3

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 3163ms 11ms 8.4MB 3150ms 0ms pyston 3.8.12
python 1.py 3521ms 3.2ms 74.6MB 3487ms 20ms pypy 3.10.16
python 1.py 3837ms 22ms 8.8MB 3827ms 0ms cpython 3.13.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 804ms 7.4ms 8.3MB 793ms 0ms pyston 3.8.12
python 1.py 970ms 5.5ms 8.9MB 960ms 0ms cpython 3.13.3
python 1.py 988ms 1.4ms 67.4MB 960ms 13ms pypy 3.10.16

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 8.py timeout 0.0ms 14.8MB 40ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 95.2MB 787ms 80ms pypy 3.10.16
python 8.py timeout 0.0ms 14.2MB 37ms 10ms pyston 3.8.12
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
ruby 4.rb 4820ms 15ms 423.5MB 5103ms 203ms truffleruby 24.2.1
python 8.py timeout 0.0ms 14.6MB 50ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 96.8MB 1343ms 173ms pypy 3.10.16
python 8.py timeout 0.0ms 13.6MB 53ms 23ms pyston 3.8.12
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
ruby 4.rb 1453ms 19ms 405.2MB 1797ms 150ms truffleruby 24.2.1
python 8-m.py 1961ms 11ms 93.0MB 6377ms 250ms pypy 3.10.16
python 8.py timeout 0.0ms 14.3MB 90ms 17ms cpython 3.13.3
python 8.py timeout 0.0ms 13.2MB 153ms 37ms pyston 3.8.12
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