Programming Language and compiler
Benchmarks

Python VS Ruby benchmarks

Current benchmark data was generated on Fri Aug 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 1165ms 6.5ms 96.8MB 1107ms 47ms pypy 3.11.13
ruby 1-m.rb 1486ms 2574ms 801.2MB 6400ms 613ms truffleruby 24.2.2
ruby 1.rb 4961ms 19ms 109.4MB 4863ms 83ms ruby/yjit 3.4.5
python 1.py timeout 0.0ms 41.0MB 4967ms 23ms cpython 3.13.5
python 1.py timeout 0.0ms 40.5MB 4733ms 253ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 70.0MB 4943ms 43ms ruby 3.4.5

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 95ms 3.5ms 68.3MB 63ms 17ms pypy 3.11.13
python 1.py 492ms 6.9ms 11.9MB 470ms 10ms pyston 3.8.12
ruby 1.rb 504ms 1.1ms 20.3MB 480ms 10ms ruby/yjit 3.4.5
ruby 1-m.rb 528ms 58ms 407.2MB 1043ms 157ms truffleruby 24.2.2
python 1.py 734ms 16ms 12.9MB 723ms 0ms cpython 3.13.5
ruby 1.rb 932ms 5.8ms 19.5MB 913ms 7ms ruby 3.4.5

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1207ms 3.1ms 105.2MB 1160ms 37ms pypy 3.11.13
ruby 1.rb 1412ms 3.1ms 63.8MB 1330ms 67ms ruby/yjit 3.4.5
ruby 1.rb 1861ms 27ms 63.1MB 1780ms 63ms ruby 3.4.5
python 1.py 2664ms 14ms 25.4MB 2643ms 10ms cpython 3.13.5
python 1.py timeout 0.0ms 17.3MB 4980ms 3ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 339.5MB 4537ms 1523ms truffleruby 24.2.2

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 150ms 1.5ms 25.6MB 117ms 17ms ruby/yjit 3.4.5
ruby 1.rb 181ms 2.8ms 25.0MB 153ms 17ms ruby 3.4.5
python 1.py 223ms 2.8ms 85.4MB 183ms 23ms pypy 3.11.13
python 1.py 230ms 0.7ms 20.6MB 210ms 3ms cpython 3.13.5
python 1.py 692ms 7.5ms 16.8MB 673ms 3ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 339.9MB 4580ms 1487ms truffleruby 24.2.2

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 264ms 5.4ms 84.7MB 227ms 23ms pypy 3.11.13
python 1.py 363ms 1.6ms 12.6MB 347ms 3ms cpython 3.13.5
python 1.py 2009ms 3.5ms 9.6MB 1997ms 0ms pyston 3.8.12

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 106ms 0.4ms 65.4MB 80ms 10ms pypy 3.11.13
python 1.py 107ms 1.1ms 11.8MB 93ms 0ms cpython 3.13.5
python 1.py 348ms 1.8ms 8.8MB 333ms 0ms pyston 3.8.12

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 6.rb 2039ms 34ms 23.0MB 2010ms 13ms ruby/yjit 3.4.5
python 1.py 2215ms 30ms 89.2MB 2163ms 33ms pypy 3.11.13
ruby 6-m.rb 2302ms 225ms 379.4MB 5953ms 337ms truffleruby 24.2.2
python 5-m.py 2319ms 16ms 66.2MB 3547ms 837ms pypy 3.11.13
python 5-m.py 2445ms 19ms 12.5MB 3547ms 983ms pyston 3.8.12
python 1.py 3020ms 14ms 8.1MB 3007ms 0ms pyston 3.8.12
python 5-m.py 3347ms 16ms 13.8MB 4410ms 927ms cpython 3.13.5
ruby 6.rb 3744ms 77ms 22.4MB 3723ms 10ms ruby 3.4.5
python 1.py 4661ms 7.5ms 9.0MB 4647ms 0ms cpython 3.13.5

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 6.rb 261ms 6.6ms 15.0MB 243ms 0ms ruby/yjit 3.4.5
python 1.py 279ms 1.4ms 63.5MB 250ms 10ms pypy 3.11.13
python 5-m.py 310ms 1.1ms 12.5MB 393ms 143ms pyston 3.8.12
python 1.py 313ms 2.4ms 8.1MB 303ms 0ms pyston 3.8.12
python 5-m.py 394ms 3.6ms 13.8MB 473ms 127ms cpython 3.13.5
ruby 6.rb 429ms 2.4ms 14.4MB 410ms 3ms ruby 3.4.5
python 5-m.py 448ms 1.8ms 66.2MB 763ms 273ms pypy 3.11.13
python 1.py 491ms 9.3ms 8.9MB 480ms 0ms cpython 3.13.5
ruby 6-m.rb 825ms 31ms 410.3MB 2047ms 173ms truffleruby 24.2.2

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 13ms 0.8ms 8.8MB 0ms 0ms cpython 3.13.5
python 1.py 29ms 0.8ms 52.2MB 10ms 10ms pypy 3.11.13
ruby 1.rb 35ms 0.6ms 141.9MB 12ms 28ms truffleruby 24.2.2
ruby 1.rb 50ms 0.8ms 12.8MB 36ms 4ms ruby 3.4.5
ruby 1.rb 51ms 1.7ms 13.0MB 36ms 4ms ruby/yjit 3.4.5

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2261ms 207ms 26.4MB 1067ms 1463ms pyston 3.8.12
python 1.py 2324ms 148ms 27.6MB 1560ms 1477ms cpython 3.13.5
python 1.py 4664ms 163ms 103.1MB 3057ms 1103ms pypy 3.11.13

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1128ms 37ms 21.4MB 243ms 243ms pyston 3.8.12
python 1.py 1182ms 83ms 22.8MB 307ms 267ms cpython 3.13.5
python 1.py 1817ms 105ms 87.1MB 737ms 220ms pypy 3.11.13

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 203ms 4.0ms 38.1MB 163ms 27ms pyston 3.8.12
python 1.py 217ms 2.8ms 38.5MB 190ms 13ms cpython 3.13.5
ruby 1.rb 251ms 0.5ms 29.2MB 220ms 13ms ruby 3.4.5
ruby 1.rb 253ms 3.8ms 29.0MB 227ms 10ms ruby/yjit 3.4.5
python 1.py 452ms 7.1ms 109.3MB 397ms 43ms pypy 3.11.13
ruby 1-m.rb 4461ms 188ms 483.7MB 11710ms 347ms truffleruby 24.2.2

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1851ms 3.5ms 220.5MB 1680ms 157ms pyston 3.8.12
python 1.py 1926ms 13ms 222.0MB 1827ms 90ms cpython 3.13.5
ruby 1.rb 2102ms 20ms 132.8MB 2010ms 77ms ruby/yjit 3.4.5
ruby 1.rb 2103ms 10ms 133.9MB 2020ms 70ms ruby 3.4.5
python 1.py 3254ms 25ms 365.0MB 3087ms 150ms pypy 3.11.13
ruby 1.rb timeout 0.0ms 502.2MB 13287ms 387ms truffleruby 24.2.2

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 3-m.py 2327ms 11ms 142.4MB 7870ms 307ms pypy 3.11.13
python 3-m.py 3105ms 7.2ms 34.0MB 11830ms 113ms pyston 3.8.12
python 3.py timeout 0.0ms 35.8MB 90ms 13ms cpython 3.13.5

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 3-m.py 380ms 3.0ms 77.0MB 967ms 143ms pypy 3.11.13
python 3-m.py 398ms 5.7ms 14.2MB 1317ms 70ms pyston 3.8.12
python 3-m.py 657ms 3.2ms 15.3MB 2323ms 67ms cpython 3.13.5

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 148ms 2.3ms 58.9MB 123ms 7ms pypy 3.11.13
python 1.py 187ms 5.0ms 59.8MB 163ms 10ms pypy 3.11.13
ruby 1.rb 340ms 5.5ms 13.5MB 323ms 3ms ruby/yjit 3.4.5
ruby 1.rb 544ms 2.3ms 12.9MB 530ms 3ms ruby 3.4.5
ruby 1-m.rb 702ms 23ms 374.1MB 1243ms 143ms truffleruby 24.2.2
python 1.py 734ms 3.0ms 8.9MB 717ms 0ms pyston 3.8.12
python 2.py 857ms 2.7ms 8.5MB 847ms 0ms pyston 3.8.12
python 1.py 1149ms 2.1ms 9.5MB 1140ms 0ms cpython 3.13.5
python 2.py 1312ms 22ms 9.3MB 1300ms 0ms cpython 3.13.5

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 349ms 5.1ms 59.7MB 320ms 13ms pypy 3.11.13
python 1.py 399ms 2.9ms 60.7MB 373ms 10ms pypy 3.11.13
ruby 1.rb 893ms 4.0ms 13.5MB 873ms 10ms ruby/yjit 3.4.5
ruby 1-m.rb 1199ms 32ms 415.0MB 1677ms 160ms truffleruby 24.2.2
ruby 1.rb 1542ms 5.2ms 12.9MB 1523ms 3ms ruby 3.4.5
python 1.py 2181ms 1.1ms 8.9MB 2170ms 0ms pyston 3.8.12
python 2.py 2527ms 6.0ms 8.5MB 2513ms 0ms pyston 3.8.12
python 1.py 3381ms 12ms 9.5MB 3373ms 0ms cpython 3.13.5
python 2.py 3934ms 57ms 9.3MB 3923ms 0ms cpython 3.13.5

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 106ms 3.8ms 58.1MB 83ms 10ms pypy 3.11.13
python 1.py 122ms 3.9ms 59.3MB 103ms 10ms pypy 3.11.13
ruby 1.rb 195ms 1.8ms 13.5MB 180ms 3ms ruby/yjit 3.4.5
ruby 1.rb 297ms 2.9ms 12.8MB 280ms 3ms ruby 3.4.5
python 1.py 357ms 3.8ms 8.5MB 347ms 0ms pyston 3.8.12
python 2.py 391ms 3.4ms 8.1MB 383ms 0ms pyston 3.8.12
ruby 1-m.rb 476ms 13ms 357.3MB 890ms 140ms truffleruby 24.2.2
python 1.py 540ms 3.8ms 9.3MB 527ms 0ms cpython 3.13.5
python 2.py 631ms 12ms 8.9MB 620ms 0ms cpython 3.13.5

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2182ms 14ms 204.7MB 2060ms 107ms pypy 3.11.13
ruby 1-m.rb 3864ms 19ms 565.6MB 9860ms 350ms truffleruby 24.2.2
python 1.py timeout 0.0ms 94.1MB 4957ms 33ms cpython 3.13.5
python 1.py timeout 0.0ms 130.4MB 4937ms 53ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 94.1MB 4937ms 47ms ruby 3.4.5
ruby 1.rb timeout 0.0ms 94.8MB 4940ms 50ms ruby/yjit 3.4.5

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 375ms 1.4ms 105.3MB 317ms 43ms pypy 3.11.13
ruby 1-m.rb 2027ms 88ms 571.0MB 5207ms 273ms truffleruby 24.2.2
python 1.py 3001ms 36ms 37.4MB 2973ms 13ms cpython 3.13.5
ruby 1.rb 3296ms 19ms 38.3MB 3260ms 20ms ruby/yjit 3.4.5
ruby 1.rb 4401ms 19ms 37.8MB 4363ms 20ms ruby 3.4.5
python 1.py timeout 0.0ms 48.9MB 4940ms 47ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 2.rb 817ms 1.5ms 309.6MB 1057ms 110ms truffleruby 24.2.2
python 2.py 1342ms 2.7ms 60.5MB 1317ms 13ms pypy 3.11.13
python 1.py 2650ms 17ms 57.8MB 2627ms 10ms pypy 3.11.13
python 1.py timeout 0.0ms 8.9MB 4990ms 0ms cpython 3.13.5
python 2.py timeout 0.0ms 9.0MB 4990ms 0ms cpython 3.13.5
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 7ms ruby 3.4.5
ruby 2.rb timeout 0.0ms 13.5MB 4980ms 0ms ruby/yjit 3.4.5

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 176ms 4.7ms 58.5MB 153ms 10ms pypy 3.11.13
python 1.py 305ms 1.6ms 57.8MB 283ms 7ms pypy 3.11.13
ruby 2-m.rb 309ms 13ms 309.8MB 537ms 117ms truffleruby 24.2.2
python 1.py 940ms 29ms 8.3MB 927ms 0ms pyston 3.8.12
ruby 2.rb 1044ms 2.3ms 13.5MB 1023ms 7ms ruby/yjit 3.4.5
python 2.py 1345ms 52ms 8.1MB 1330ms 0ms pyston 3.8.12
ruby 2.rb 2832ms 56ms 12.8MB 2813ms 7ms ruby 3.4.5
python 1.py 2971ms 99ms 8.9MB 2960ms 0ms cpython 3.13.5
python 2.py 2989ms 51ms 9.0MB 2977ms 0ms cpython 3.13.5

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2403ms 56ms 369.9MB 2330ms 57ms pypy 3.11.13
python 2.py 2979ms 17ms 633.0MB 2793ms 170ms pyston 3.8.12
python 1.py 4806ms 156ms 320.4MB 4743ms 47ms pyston 3.8.12
python 1.py timeout 0.0ms 321.4MB 4960ms 20ms cpython 3.13.5
python 2.py timeout 0.0ms 633.8MB 4827ms 160ms cpython 3.13.5
python 2.py timeout 0.0ms 1017.7MB 4707ms 280ms pypy 3.11.13
ruby 1.rb timeout 0.0ms 325.3MB 4840ms 140ms ruby 3.4.5
ruby 1.rb timeout 0.0ms 327.0MB 4847ms 140ms ruby/yjit 3.4.5
ruby 1.rb timeout 0.0ms 737.6MB 5057ms 157ms truffleruby 24.2.2

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 503ms 12ms 135.7MB 463ms 23ms pypy 3.11.13
python 2.py 726ms 6.1ms 164.2MB 683ms 30ms pyston 3.8.12
python 1.py 1068ms 11ms 86.0MB 1040ms 10ms pyston 3.8.12
python 2.py 1370ms 7.2ms 165.1MB 1327ms 30ms cpython 3.13.5
python 2.py 1392ms 15ms 290.8MB 1303ms 73ms pypy 3.11.13
ruby 1-m.rb 1694ms 36ms 474.9MB 2407ms 170ms truffleruby 24.2.2
python 1.py 2819ms 6.7ms 87.0MB 2793ms 10ms cpython 3.13.5
ruby 1.rb 3393ms 45ms 131.6MB 3303ms 70ms ruby/yjit 3.4.5
ruby 1.rb 4458ms 22ms 131.0MB 4367ms 77ms ruby 3.4.5

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1924ms 4.4ms 8.9MB 1873ms 37ms pyston 3.8.12
python 4.py 1956ms 1.7ms 9.5MB 1913ms 33ms cpython 3.13.5
python 4.py 2159ms 6.6ms 89.6MB 2120ms 30ms pypy 3.11.13
ruby 1.rb timeout 0.0ms 130.1MB 4833ms 153ms ruby 3.4.5
ruby 1.rb timeout 0.0ms 130.9MB 4840ms 147ms ruby/yjit 3.4.5
ruby 1.rb timeout 0.0ms 451.7MB 13370ms 400ms truffleruby 24.2.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 453ms 2.0ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 468ms 3.7ms 9.4MB 457ms 0ms cpython 3.13.5
python 4.py 549ms 3.2ms 83.6MB 510ms 27ms pypy 3.11.13
ruby 1-m.rb 1509ms 109ms 384.9MB 4013ms 193ms truffleruby 24.2.2
ruby 1.rb 1759ms 8.3ms 130.9MB 1633ms 113ms ruby/yjit 3.4.5
ruby 1.rb 1782ms 5.6ms 130.0MB 1650ms 123ms ruby 3.4.5

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2244ms 7.2ms 245.8MB 2183ms 43ms pypy 3.11.13
python 1.py 4754ms 9.8ms 226.2MB 4570ms 170ms pyston 3.8.12
python 1.py timeout 0.0ms 137.9MB 4930ms 53ms cpython 3.13.5

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 333ms 7.5ms 87.3MB 290ms 30ms pypy 3.11.13
python 1.py 497ms 1.8ms 30.3MB 463ms 20ms pyston 3.8.12
python 1.py 617ms 0.3ms 30.0MB 587ms 17ms cpython 3.13.5

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 3157ms 7.5ms 8.4MB 3143ms 0ms pyston 3.8.12
python 1.py 3590ms 17ms 75.7MB 3557ms 23ms pypy 3.11.13
python 1.py 3831ms 12ms 8.9MB 3817ms 0ms cpython 3.13.5

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 800ms 1.0ms 8.3MB 790ms 0ms pyston 3.8.12
python 1.py 955ms 9.6ms 8.9MB 943ms 0ms cpython 3.13.5
python 1.py 1001ms 6.1ms 68.6MB 973ms 13ms pypy 3.11.13

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 3.13.5
python 8.py timeout 0.0ms 94.2MB 653ms 73ms pypy 3.11.13
python 8.py timeout 0.0ms 14.3MB 40ms 10ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 12.9MB 4987ms 0ms ruby 3.4.5
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 10ms ruby/yjit 3.4.5
ruby 4.rb timeout 0.0ms 420.8MB 5170ms 227ms truffleruby 24.2.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 4.rb 4810ms 20ms 422.1MB 5107ms 190ms truffleruby 24.2.2
python 8.py timeout 0.0ms 14.4MB 50ms 7ms cpython 3.13.5
python 8.py timeout 0.0ms 96.2MB 1180ms 140ms pypy 3.11.13
python 8.py timeout 0.0ms 13.6MB 63ms 13ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 12.9MB 4983ms 0ms ruby 3.4.5
ruby 4.rb timeout 0.0ms 13.6MB 4983ms 0ms ruby/yjit 3.4.5

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 4.rb 1419ms 19ms 379.8MB 1753ms 130ms truffleruby 24.2.2
python 8-m.py 2147ms 28ms 94.2MB 7087ms 240ms pypy 3.11.13
python 8.py timeout 0.0ms 14.3MB 90ms 13ms cpython 3.13.5
python 8.py timeout 0.0ms 13.1MB 133ms 37ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 12.9MB 4987ms 0ms ruby 3.4.5
ruby 4.rb timeout 0.0ms 13.8MB 4983ms 0ms ruby/yjit 3.4.5