Programming Language and compiler
Benchmarks

Python VS Ruby benchmarks

Current benchmark data was generated on Mon Apr 14 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 1213ms 9.6ms 96.3MB 1153ms 47ms pypy 3.10.16
ruby 1.rb 4815ms 21ms 109.4MB 4710ms 90ms ruby/yjit 3.4.2
python 1.py timeout 0.0ms 40.9MB 4967ms 17ms cpython 3.13.3
python 1.py timeout 0.0ms 40.5MB 4760ms 227ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 70.5MB 4953ms 37ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 758.8MB 6567ms 693ms truffleruby 24.2.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 97ms 0.7ms 68.7MB 70ms 20ms pypy 3.10.16
python 1.py 477ms 2.7ms 11.9MB 450ms 10ms pyston 3.8.12
ruby 1.rb 492ms 5.0ms 20.4MB 467ms 10ms ruby/yjit 3.4.2
ruby 1-m.rb 537ms 66ms 418.7MB 1060ms 157ms truffleruby 24.2.0
python 1.py 732ms 10.0ms 12.8MB 720ms 0ms cpython 3.13.3
ruby 1.rb 937ms 8.8ms 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 1229ms 8.1ms 106.1MB 1177ms 37ms pypy 3.10.16
ruby 1.rb 1460ms 7.9ms 63.8MB 1380ms 63ms ruby/yjit 3.4.2
ruby 1.rb 1856ms 18ms 63.1MB 1783ms 60ms ruby 3.4.2
python 1.py 2740ms 11ms 25.2MB 2720ms 10ms cpython 3.13.3
python 1.py timeout 0.0ms 17.3MB 4980ms 3ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 357.5MB 4680ms 1437ms truffleruby 24.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 155ms 0.2ms 25.8MB 127ms 17ms ruby/yjit 3.4.2
ruby 1.rb 180ms 0.8ms 25.1MB 150ms 17ms ruby 3.4.2
python 1.py 226ms 4.5ms 86.4MB 190ms 23ms pypy 3.10.16
python 1.py 238ms 4.8ms 20.5MB 217ms 7ms cpython 3.13.3
python 1.py 677ms 17ms 16.8MB 657ms 7ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 332.3MB 4803ms 1357ms truffleruby 24.2.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 249ms 0.9ms 83.6MB 213ms 20ms pypy 3.10.16
python 1.py 364ms 4.3ms 12.6MB 350ms 0ms cpython 3.13.3
python 1.py 2004ms 3.1ms 9.6MB 1990ms 0ms pyston 3.8.12

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 101ms 1.7ms 63.4MB 73ms 13ms pypy 3.10.16
python 1.py 112ms 3.3ms 12.4MB 97ms 0ms cpython 3.13.3
python 1.py 350ms 3.1ms 8.8MB 340ms 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 1856ms 3.7ms 88.7MB 1810ms 33ms pypy 3.10.16
ruby 6.rb 2050ms 4.6ms 23.0MB 2020ms 13ms ruby/yjit 3.4.2
ruby 6-m.rb 2229ms 245ms 437.5MB 5773ms 363ms truffleruby 24.2.0
python 5-m.py 2281ms 14ms 65.4MB 3517ms 857ms pypy 3.10.16
python 5-m.py 2454ms 16ms 12.5MB 3597ms 933ms pyston 3.8.12
python 1.py 3039ms 6.1ms 8.1MB 3027ms 0ms pyston 3.8.12
python 5-m.py 3378ms 6.8ms 13.9MB 4507ms 907ms cpython 3.13.3
ruby 6.rb 3848ms 19ms 22.4MB 3823ms 13ms ruby 3.4.2
python 1.py 4717ms 37ms 8.9MB 4703ms 0ms cpython 3.13.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 253ms 4.7ms 63.3MB 227ms 10ms pypy 3.10.16
ruby 6.rb 267ms 5.3ms 15.0MB 250ms 0ms ruby/yjit 3.4.2
python 5-m.py 311ms 6.2ms 12.5MB 407ms 143ms pyston 3.8.12
python 1.py 313ms 1.7ms 8.1MB 300ms 0ms pyston 3.8.12
python 5-m.py 410ms 4.8ms 13.8MB 487ms 147ms cpython 3.13.3
ruby 6.rb 439ms 1.1ms 14.5MB 420ms 3ms ruby 3.4.2
python 5-m.py 451ms 3.7ms 65.4MB 747ms 310ms pypy 3.10.16
python 1.py 498ms 22ms 8.9MB 483ms 0ms cpython 3.13.3
ruby 6-m.rb 828ms 16ms 375.5MB 2057ms 180ms 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 0.9ms 7.8MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.3ms 8.6MB 10ms 0ms cpython 3.13.3
python 1.py 28ms 0.4ms 51.6MB 10ms 10ms pypy 3.10.16
ruby 1.rb 35ms 0.5ms 141.8MB 14ms 24ms truffleruby 24.2.0
ruby 1.rb 51ms 1.1ms 12.9MB 38ms 0ms ruby 3.4.2
ruby 1.rb 53ms 1.6ms 13.1MB 38ms 2ms ruby/yjit 3.4.2

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1982ms 291ms 26.5MB 1100ms 1583ms pyston 3.8.12
python 1.py 2558ms 418ms 27.5MB 1607ms 1657ms cpython 3.13.3
python 1.py 4758ms 76ms 103.4MB 2947ms 1227ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1099ms 21ms 21.1MB 243ms 273ms pyston 3.8.12
python 1.py 1164ms 45ms 22.8MB 320ms 287ms cpython 3.13.3
python 1.py 1596ms 195ms 86.4MB 730ms 227ms 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 3.2ms 38.2MB 167ms 17ms pyston 3.8.12
python 1.py 222ms 3.4ms 38.8MB 197ms 10ms cpython 3.13.3
ruby 1.rb 249ms 0.3ms 29.0MB 220ms 13ms ruby/yjit 3.4.2
ruby 1.rb 254ms 0.5ms 27.4MB 220ms 20ms ruby 3.4.2
python 1.py 299ms 3.1ms 89.5MB 260ms 27ms pypy 3.10.16
ruby 1-m.rb 4445ms 295ms 567.1MB 11670ms 337ms truffleruby 24.2.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1828ms 1.9ms 220.5MB 1663ms 153ms pyston 3.8.12
python 1.py 1898ms 10ms 222.2MB 1817ms 63ms pypy 3.10.16
python 1.py 1919ms 14ms 221.5MB 1827ms 80ms cpython 3.13.3
ruby 1.rb 2093ms 6.5ms 135.0MB 2003ms 77ms ruby/yjit 3.4.2
ruby 1.rb 2093ms 7.0ms 134.5MB 2003ms 73ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 522.9MB 13260ms 347ms truffleruby 24.2.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 3-m.py 2479ms 7.2ms 136.3MB 8417ms 323ms pypy 3.10.16
python 3-m.py 3176ms 41ms 34.3MB 12123ms 117ms pyston 3.8.12
python 3.py timeout 0.0ms 35.7MB 93ms 20ms 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 389ms 2.2ms 75.7MB 997ms 157ms pypy 3.10.16
python 3-m.py 395ms 1.5ms 14.3MB 1307ms 67ms pyston 3.8.12
python 3-m.py 691ms 2.2ms 15.2MB 2443ms 60ms 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 145ms 1.4ms 58.3MB 120ms 10ms pypy 3.10.16
python 1.py 178ms 1.3ms 59.3MB 150ms 10ms pypy 3.10.16
ruby 1.rb 334ms 6.3ms 13.5MB 317ms 3ms ruby/yjit 3.4.2
ruby 1.rb 528ms 4.6ms 12.9MB 513ms 3ms ruby 3.4.2
ruby 1-m.rb 680ms 43ms 373.6MB 1197ms 137ms truffleruby 24.2.0
python 1.py 726ms 8.6ms 8.9MB 717ms 0ms pyston 3.8.12
python 2.py 840ms 8.8ms 8.5MB 830ms 0ms pyston 3.8.12
python 1.py 1148ms 17ms 9.5MB 1137ms 0ms cpython 3.13.3
python 2.py 1347ms 2.0ms 9.3MB 1333ms 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 344ms 7.2ms 59.2MB 320ms 10ms pypy 3.10.16
python 1.py 380ms 1.8ms 60.3MB 357ms 10ms pypy 3.10.16
ruby 1.rb 883ms 3.5ms 13.5MB 860ms 10ms ruby/yjit 3.4.2
ruby 1-m.rb 1207ms 46ms 407.2MB 1677ms 157ms truffleruby 24.2.0
ruby 1.rb 1475ms 9.5ms 13.0MB 1453ms 10ms ruby 3.4.2
python 1.py 2133ms 11ms 8.9MB 2120ms 0ms pyston 3.8.12
python 2.py 2493ms 11ms 8.5MB 2480ms 0ms pyston 3.8.12
python 1.py 3395ms 51ms 9.5MB 3383ms 0ms cpython 3.13.3
python 2.py 3992ms 18ms 9.1MB 3980ms 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 104ms 2.3ms 58.1MB 87ms 7ms pypy 3.10.16
python 1.py 122ms 4.0ms 58.7MB 100ms 13ms pypy 3.10.16
ruby 1.rb 192ms 1.4ms 13.5MB 177ms 7ms ruby/yjit 3.4.2
ruby 1.rb 294ms 2.8ms 12.9MB 280ms 3ms ruby 3.4.2
python 1.py 349ms 7.4ms 8.5MB 337ms 0ms pyston 3.8.12
python 2.py 390ms 5.2ms 8.1MB 377ms 0ms pyston 3.8.12
ruby 1-m.rb 515ms 15ms 357.6MB 1040ms 137ms truffleruby 24.2.0
python 1.py 552ms 6.4ms 9.3MB 540ms 0ms cpython 3.13.3
python 2.py 649ms 7.0ms 8.8MB 637ms 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 2227ms 9.2ms 202.8MB 2113ms 100ms pypy 3.10.16
ruby 1-m.rb 4155ms 538ms 542.6MB 10537ms 360ms truffleruby 24.2.0
python 1.py timeout 0.0ms 94.0MB 4960ms 27ms cpython 3.13.3
python 1.py timeout 0.0ms 130.4MB 4937ms 47ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 93.6MB 4933ms 50ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 94.1MB 4943ms 40ms ruby/yjit 3.4.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 384ms 2.6ms 105.2MB 327ms 43ms pypy 3.10.16
ruby 1-m.rb 2026ms 131ms 594.1MB 5157ms 270ms truffleruby 24.2.0
ruby 1.rb 3422ms 26ms 38.3MB 3383ms 23ms ruby/yjit 3.4.2
python 1.py 3481ms 73ms 37.3MB 3450ms 20ms cpython 3.13.3
ruby 1.rb 4463ms 59ms 37.8MB 4427ms 27ms ruby 3.4.2
python 1.py timeout 0.0ms 48.9MB 4957ms 30ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 2.rb 825ms 4.5ms 309.8MB 1053ms 117ms truffleruby 24.2.0
python 2.py 1350ms 3.5ms 57.9MB 1327ms 10ms pypy 3.10.16
python 1.py 2654ms 20ms 57.2MB 2627ms 13ms 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 12.9MB 4987ms 0ms ruby 3.4.2
ruby 2.rb timeout 0.0ms 13.5MB 4983ms 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 177ms 2.0ms 57.9MB 157ms 10ms pypy 3.10.16
ruby 2-m.rb 308ms 6.2ms 310.0MB 540ms 117ms truffleruby 24.2.0
python 1.py 309ms 11ms 57.1MB 287ms 7ms pypy 3.10.16
python 1.py 1009ms 134ms 8.3MB 997ms 0ms pyston 3.8.12
ruby 2.rb 1062ms 3.2ms 13.5MB 1047ms 3ms ruby/yjit 3.4.2
python 2.py 1304ms 5.0ms 8.3MB 1293ms 0ms pyston 3.8.12
ruby 2.rb 2806ms 75ms 12.9MB 2787ms 3ms ruby 3.4.2
python 1.py 2984ms 72ms 8.8MB 2970ms 0ms cpython 3.13.3
python 2.py 3398ms 9.8ms 8.9MB 3387ms 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 2598ms 14ms 369.5MB 2527ms 60ms pypy 3.10.16
python 2.py 3071ms 19ms 633.0MB 2897ms 157ms pyston 3.8.12
python 1.py 4831ms 76ms 320.4MB 4770ms 47ms pyston 3.8.12
python 1.py timeout 0.0ms 321.3MB 4960ms 27ms cpython 3.13.3
python 2.py timeout 0.0ms 633.8MB 4833ms 150ms cpython 3.13.3
python 2.py timeout 0.0ms 959.7MB 4723ms 260ms pypy 3.10.16
ruby 1.rb timeout 0.0ms 325.4MB 4860ms 130ms 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 703.0MB 5090ms 140ms truffleruby 24.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 545ms 16ms 135.2MB 510ms 20ms pypy 3.10.16
python 2.py 746ms 6.9ms 164.2MB 707ms 27ms pyston 3.8.12
python 1.py 1093ms 21ms 86.0MB 1070ms 10ms pyston 3.8.12
python 2.py 1471ms 14ms 165.0MB 1430ms 30ms cpython 3.13.3
python 2.py 1569ms 31ms 290.2MB 1480ms 77ms pypy 3.10.16
ruby 1.rb 1725ms 19ms 476.7MB 2387ms 160ms truffleruby 24.2.0
python 1.py 2775ms 8.1ms 86.9MB 2750ms 10ms cpython 3.13.3
ruby 1.rb 3412ms 46ms 131.8MB 3323ms 73ms ruby/yjit 3.4.2
ruby 1.rb 4494ms 36ms 131.1MB 4403ms 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 1925ms 11ms 8.9MB 1877ms 33ms pyston 3.8.12
python 4.py 1996ms 9.8ms 9.5MB 1940ms 43ms cpython 3.13.3
python 4.py 2190ms 2.9ms 89.4MB 2150ms 27ms pypy 3.10.16
ruby 1.rb timeout 0.0ms 46.6MB 4920ms 60ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 127.6MB 4830ms 157ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 437.3MB 13257ms 400ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 451ms 0.8ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 476ms 4.0ms 9.3MB 467ms 0ms cpython 3.13.3
python 4.py 553ms 5.0ms 83.9MB 513ms 23ms pypy 3.10.16
ruby 1.rb 1663ms 2.6ms 46.0MB 1623ms 27ms ruby 3.4.2
ruby 1.rb 1695ms 86ms 126.8MB 1620ms 60ms ruby/yjit 3.4.2
ruby 1-m.rb 1731ms 175ms 412.7MB 4540ms 227ms truffleruby 24.2.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2250ms 7.9ms 243.5MB 2190ms 40ms pypy 3.10.16
python 1.py 4742ms 16ms 252.7MB 4557ms 170ms pyston 3.8.12
python 1.py timeout 0.0ms 149.9MB 4927ms 57ms cpython 3.13.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 332ms 4.0ms 87.9MB 293ms 23ms pypy 3.10.16
python 1.py 499ms 5.4ms 30.0MB 467ms 23ms pyston 3.8.12
python 1.py 619ms 0.9ms 29.5MB 583ms 23ms cpython 3.13.3

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 3164ms 6.1ms 8.4MB 3153ms 0ms pyston 3.8.12
python 1.py 3535ms 23ms 74.3MB 3500ms 20ms pypy 3.10.16
python 1.py 3825ms 22ms 8.9MB 3813ms 0ms cpython 3.13.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 801ms 5.4ms 8.3MB 790ms 0ms pyston 3.8.12
python 1.py 970ms 6.6ms 8.8MB 957ms 0ms cpython 3.13.3
python 1.py 992ms 6.4ms 67.3MB 963ms 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 7ms cpython 3.13.3
python 8.py timeout 0.0ms 96.8MB 803ms 73ms pypy 3.10.16
python 8.py timeout 0.0ms 14.1MB 33ms 10ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 7ms ruby/yjit 3.4.2
ruby 4.rb timeout 0.0ms 434.6MB 5167ms 233ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 4.rb 4868ms 23ms 439.6MB 5153ms 217ms truffleruby 24.2.0
python 8.py timeout 0.0ms 14.6MB 50ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 96.2MB 1303ms 180ms pypy 3.10.16
python 8.py timeout 0.0ms 13.7MB 57ms 20ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 13.0MB 4987ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.2

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 4.rb 1435ms 5.1ms 375.6MB 1770ms 137ms truffleruby 24.2.0
python 8-m.py 1955ms 10ms 93.2MB 6330ms 253ms pypy 3.10.16
python 8.py timeout 0.0ms 14.3MB 90ms 13ms cpython 3.13.3
python 8.py timeout 0.0ms 13.1MB 127ms 37ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.8MB 4980ms 3ms ruby/yjit 3.4.2