Programming Language and compiler
Benchmarks

Python VS Ruby benchmarks

Current benchmark data was generated on Tue Mar 25 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 1197ms 3.3ms 96.2MB 1130ms 53ms pypy 3.10.16
ruby 1-m.rb 1604ms 2779ms 798.2MB 6547ms 637ms truffleruby 24.2.0
ruby 1.rb 4929ms 11ms 110.0MB 4830ms 87ms ruby/yjit 3.4.2
python 1.py timeout 0.0ms 40.8MB 4967ms 17ms cpython 3.13.2
python 1.py timeout 0.0ms 40.5MB 4740ms 250ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 70.6MB 4943ms 43ms ruby 3.4.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 97ms 2.2ms 68.7MB 67ms 17ms pypy 3.10.16
python 1.py 487ms 1.2ms 11.9MB 460ms 13ms pyston 3.8.12
ruby 1.rb 497ms 4.3ms 20.3MB 473ms 10ms ruby/yjit 3.4.2
ruby 1-m.rb 605ms 52ms 425.3MB 1203ms 173ms truffleruby 24.2.0
python 1.py 726ms 15ms 12.6MB 713ms 0ms cpython 3.13.2
ruby 1.rb 935ms 7.2ms 19.6MB 910ms 10ms 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 1280ms 15ms 107.2MB 1230ms 37ms pypy 3.10.16
ruby 1.rb 1467ms 40ms 63.8MB 1387ms 63ms ruby/yjit 3.4.2
ruby 1.rb 1869ms 46ms 63.1MB 1790ms 63ms ruby 3.4.2
python 1.py 2668ms 8.1ms 25.1MB 2643ms 10ms cpython 3.13.2
python 1.py timeout 0.0ms 17.4MB 4980ms 10ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 336.9MB 4703ms 1443ms truffleruby 24.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 160ms 2.1ms 25.6MB 123ms 20ms ruby/yjit 3.4.2
ruby 1.rb 180ms 2.8ms 25.1MB 150ms 20ms ruby 3.4.2
python 1.py 221ms 0.4ms 86.7MB 183ms 23ms pypy 3.10.16
python 1.py 239ms 1.7ms 20.3MB 220ms 10ms cpython 3.13.2
python 1.py 663ms 2.7ms 16.8MB 637ms 10ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 333.3MB 4763ms 1447ms truffleruby 24.2.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 252ms 2.8ms 83.3MB 213ms 27ms pypy 3.10.16
python 1.py 360ms 4.5ms 12.5MB 343ms 0ms cpython 3.13.2
python 1.py 2006ms 3.3ms 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 105ms 0.1ms 63.3MB 73ms 17ms pypy 3.10.16
python 1.py 125ms 28ms 12.3MB 100ms 0ms cpython 3.13.2
python 1.py 349ms 1.6ms 8.8MB 337ms 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 1866ms 18ms 88.8MB 1820ms 33ms pypy 3.10.16
ruby 6.rb 2067ms 17ms 23.0MB 2040ms 13ms ruby/yjit 3.4.2
ruby 6-m.rb 2128ms 75ms 365.9MB 5427ms 350ms truffleruby 24.2.0
python 5-m.py 2278ms 15ms 65.4MB 3513ms 857ms pypy 3.10.16
python 5-m.py 2482ms 19ms 12.5MB 3550ms 1030ms pyston 3.8.12
python 1.py 3030ms 3.8ms 8.1MB 3020ms 0ms pyston 3.8.12
python 5-m.py 3399ms 44ms 13.5MB 4503ms 963ms cpython 3.13.2
ruby 6.rb 3896ms 43ms 22.5MB 3870ms 17ms ruby 3.4.2
python 1.py 4712ms 79ms 8.8MB 4703ms 0ms cpython 3.13.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 249ms 2.9ms 63.3MB 220ms 13ms pypy 3.10.16
ruby 6.rb 262ms 3.7ms 15.0MB 243ms 7ms ruby/yjit 3.4.2
python 1.py 317ms 7.5ms 8.1MB 303ms 0ms pyston 3.8.12
python 5-m.py 321ms 4.6ms 12.5MB 420ms 147ms pyston 3.8.12
python 5-m.py 405ms 4.6ms 13.5MB 490ms 133ms cpython 3.13.2
ruby 6.rb 440ms 7.9ms 14.5MB 420ms 3ms ruby 3.4.2
python 5-m.py 450ms 2.3ms 65.4MB 730ms 327ms pypy 3.10.16
python 1.py 484ms 3.0ms 8.8MB 473ms 0ms cpython 3.13.2
ruby 6-m.rb 787ms 58ms 380.4MB 1943ms 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 12ms 0.8ms 7.6MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.2ms 8.6MB 10ms 0ms cpython 3.13.2
python 1.py 30ms 1.2ms 51.4MB 10ms 10ms pypy 3.10.16
ruby 1.rb 38ms 1.6ms 142.2MB 14ms 28ms truffleruby 24.2.0
ruby 1.rb 52ms 1.2ms 12.9MB 38ms 4ms ruby 3.4.2
ruby 1.rb 54ms 2.1ms 13.0MB 40ms 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 2282ms 194ms 26.9MB 1117ms 1593ms pyston 3.8.12
python 1.py 2580ms 481ms 27.6MB 1630ms 1610ms cpython 3.13.2
python 1.py 4863ms 221ms 103.4MB 2960ms 1227ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1083ms 4.6ms 21.3MB 230ms 290ms pyston 3.8.12
python 1.py 1174ms 104ms 22.5MB 320ms 273ms cpython 3.13.2
python 1.py 1547ms 248ms 85.3MB 713ms 237ms 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 202ms 1.8ms 38.2MB 167ms 23ms pyston 3.8.12
python 1.py 219ms 2.8ms 38.6MB 193ms 13ms cpython 3.13.2
ruby 1.rb 257ms 6.2ms 26.6MB 227ms 17ms ruby 3.4.2
ruby 1.rb 261ms 3.5ms 30.3MB 230ms 13ms ruby/yjit 3.4.2
python 1.py 302ms 5.9ms 89.6MB 263ms 27ms pypy 3.10.16
ruby 1-m.rb 4513ms 198ms 499.5MB 11770ms 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 1859ms 6.2ms 220.5MB 1687ms 153ms pyston 3.8.12
python 1.py 1921ms 20ms 222.2MB 1843ms 63ms pypy 3.10.16
python 1.py 1947ms 15ms 221.4MB 1850ms 83ms cpython 3.13.2
ruby 1.rb 2094ms 7.7ms 134.5MB 2010ms 67ms ruby 3.4.2
ruby 1.rb 2103ms 13ms 135.5MB 2017ms 70ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 542.8MB 13190ms 353ms 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 2464ms 33ms 136.4MB 8333ms 327ms pypy 3.10.16
python 3-m.py 3223ms 25ms 34.3MB 12263ms 117ms pyston 3.8.12
python 3.py timeout 0.0ms 35.6MB 87ms 23ms cpython 3.13.2

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 3-m.py 392ms 2.5ms 76.3MB 1003ms 160ms pypy 3.10.16
python 3-m.py 406ms 1.5ms 14.3MB 1347ms 70ms pyston 3.8.12
python 3-m.py 659ms 5.8ms 15.1MB 2317ms 63ms cpython 3.13.2

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 147ms 1.7ms 58.3MB 127ms 10ms pypy 3.10.16
python 1.py 184ms 4.8ms 59.3MB 160ms 10ms pypy 3.10.16
ruby 1.rb 332ms 5.1ms 13.5MB 313ms 0ms ruby/yjit 3.4.2
ruby 1.rb 524ms 1.2ms 13.0MB 510ms 0ms ruby 3.4.2
ruby 1-m.rb 710ms 32ms 365.2MB 1233ms 153ms truffleruby 24.2.0
python 1.py 721ms 2.1ms 8.9MB 707ms 0ms pyston 3.8.12
python 2.py 846ms 12ms 8.5MB 837ms 0ms pyston 3.8.12
python 1.py 1125ms 14ms 9.3MB 1113ms 0ms cpython 3.13.2
python 2.py 1331ms 3.3ms 9.0MB 1320ms 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 345ms 4.6ms 59.2MB 320ms 10ms pypy 3.10.16
python 1.py 383ms 1.7ms 60.3MB 360ms 10ms pypy 3.10.16
ruby 1.rb 886ms 4.7ms 13.5MB 863ms 10ms ruby/yjit 3.4.2
ruby 1-m.rb 1259ms 50ms 413.3MB 1827ms 197ms truffleruby 24.2.0
ruby 1.rb 1482ms 23ms 13.0MB 1463ms 7ms ruby 3.4.2
python 1.py 2123ms 11ms 8.9MB 2107ms 0ms pyston 3.8.12
python 2.py 2478ms 14ms 8.5MB 2463ms 0ms pyston 3.8.12
python 1.py 3384ms 51ms 9.3MB 3370ms 0ms cpython 3.13.2
python 2.py 4191ms 262ms 9.0MB 4180ms 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 108ms 2.1ms 57.9MB 83ms 10ms pypy 3.10.16
python 1.py 124ms 2.8ms 58.7MB 97ms 13ms pypy 3.10.16
ruby 1.rb 195ms 2.2ms 13.5MB 177ms 7ms ruby/yjit 3.4.2
ruby 1.rb 289ms 2.1ms 12.9MB 273ms 0ms ruby 3.4.2
python 1.py 350ms 0.8ms 8.5MB 337ms 0ms pyston 3.8.12
python 2.py 388ms 2.7ms 8.1MB 380ms 0ms pyston 3.8.12
ruby 1-m.rb 514ms 28ms 357.0MB 993ms 137ms truffleruby 24.2.0
python 1.py 535ms 0.5ms 9.0MB 520ms 0ms cpython 3.13.2
python 2.py 638ms 8.7ms 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 2242ms 13ms 202.7MB 2123ms 100ms pypy 3.10.16
ruby 1-m.rb 3955ms 22ms 606.4MB 10090ms 377ms truffleruby 24.2.0
python 1.py timeout 0.0ms 93.6MB 4953ms 30ms cpython 3.13.2
python 1.py timeout 0.0ms 130.4MB 4930ms 53ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 94.3MB 4940ms 50ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 94.1MB 4933ms 53ms 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 3.7ms 105.2MB 320ms 47ms pypy 3.10.16
ruby 1-m.rb 2157ms 107ms 616.5MB 5503ms 283ms truffleruby 24.2.0
python 1.py 3229ms 20ms 37.2MB 3203ms 13ms cpython 3.13.2
ruby 1.rb 3496ms 172ms 38.3MB 3457ms 23ms ruby/yjit 3.4.2
ruby 1.rb 4445ms 2.9ms 37.8MB 4413ms 17ms ruby 3.4.2
python 1.py timeout 0.0ms 48.4MB 4963ms 23ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 2.rb 846ms 5.3ms 311.6MB 1087ms 127ms truffleruby 24.2.0
python 2.py 1357ms 7.5ms 57.9MB 1330ms 10ms pypy 3.10.16
python 1.py 2662ms 11ms 57.2MB 2640ms 10ms pypy 3.10.16
python 1.py timeout 0.0ms 8.8MB 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 4983ms 7ms ruby 3.4.2
ruby 2.rb timeout 0.0ms 13.5MB 4987ms 0ms ruby/yjit 3.4.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 179ms 2.5ms 57.9MB 157ms 10ms pypy 3.10.16
python 1.py 310ms 12ms 57.0MB 287ms 10ms pypy 3.10.16
ruby 2-m.rb 313ms 8.1ms 310.0MB 540ms 123ms truffleruby 24.2.0
python 1.py 934ms 14ms 8.3MB 920ms 0ms pyston 3.8.12
ruby 2.rb 1065ms 2.9ms 13.5MB 1043ms 0ms ruby/yjit 3.4.2
python 2.py 1326ms 45ms 8.1MB 1313ms 0ms pyston 3.8.12
ruby 2.rb 2836ms 76ms 12.9MB 2817ms 3ms ruby 3.4.2
python 1.py 3035ms 123ms 8.6MB 3020ms 0ms cpython 3.13.2
python 2.py 3207ms 87ms 8.8MB 3197ms 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 2644ms 5.0ms 369.5MB 2577ms 57ms pypy 3.10.16
python 2.py 3165ms 30ms 633.0MB 2990ms 157ms pyston 3.8.12
python 1.py timeout 0.0ms 321.1MB 4960ms 30ms cpython 3.13.2
python 2.py timeout 0.0ms 633.6MB 4830ms 153ms cpython 3.13.2
python 2.py timeout 0.0ms 959.7MB 4717ms 270ms pypy 3.10.16
python 1.py timeout 0.0ms 320.4MB 4933ms 50ms pyston 3.8.12
ruby 1.rb timeout 0.0ms 325.4MB 4847ms 137ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 327.0MB 4840ms 143ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 707.0MB 5073ms 153ms truffleruby 24.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 554ms 4.7ms 135.2MB 517ms 23ms pypy 3.10.16
python 2.py 754ms 4.9ms 164.2MB 710ms 27ms pyston 3.8.12
python 1.py 1144ms 17ms 86.0MB 1117ms 10ms pyston 3.8.12
python 2.py 1460ms 5.5ms 164.8MB 1417ms 30ms cpython 3.13.2
python 2.py 1589ms 53ms 290.2MB 1500ms 77ms pypy 3.10.16
ruby 1-m.rb 1762ms 23ms 498.0MB 2533ms 183ms truffleruby 24.2.0
python 1.py 2736ms 37ms 86.8MB 2710ms 10ms cpython 3.13.2
ruby 1.rb 3732ms 397ms 131.8MB 3640ms 77ms ruby/yjit 3.4.2
ruby 1.rb 4536ms 21ms 131.1MB 4440ms 80ms ruby 3.4.2

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1912ms 9.2ms 8.9MB 1870ms 27ms pyston 3.8.12
python 4.py 1956ms 14ms 9.3MB 1890ms 47ms cpython 3.13.2
python 4.py 2197ms 12ms 89.4MB 2153ms 30ms pypy 3.10.16
ruby 1.rb timeout 0.0ms 46.7MB 4920ms 67ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 123.9MB 4887ms 100ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 457.3MB 13323ms 400ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 453ms 3.4ms 8.6MB 443ms 0ms pyston 3.8.12
python 4.py 463ms 0.7ms 9.1MB 450ms 0ms cpython 3.13.2
python 4.py 551ms 4.4ms 83.8MB 517ms 20ms pypy 3.10.16
ruby 1.rb 1685ms 6.0ms 46.0MB 1633ms 37ms ruby 3.4.2
ruby 1-m.rb 1729ms 252ms 405.1MB 4537ms 220ms truffleruby 24.2.0
ruby 1.rb 1798ms 0.8ms 127.8MB 1647ms 133ms ruby/yjit 3.4.2

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2254ms 9.7ms 243.7MB 2197ms 43ms pypy 3.10.16
python 1.py 4766ms 18ms 268.3MB 4583ms 167ms pyston 3.8.12
python 1.py timeout 0.0ms 144.0MB 4937ms 47ms cpython 3.13.2

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 331ms 4.0ms 85.9MB 290ms 27ms pypy 3.10.16
python 1.py 498ms 3.7ms 36.1MB 467ms 20ms pyston 3.8.12
python 1.py 611ms 4.7ms 31.0MB 580ms 13ms cpython 3.13.2

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 3166ms 15ms 8.3MB 3153ms 0ms pyston 3.8.12
python 1.py 3558ms 6.3ms 74.3MB 3520ms 20ms pypy 3.10.16
python 1.py 3834ms 38ms 8.6MB 3823ms 0ms cpython 3.13.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 806ms 3.4ms 8.3MB 793ms 0ms pyston 3.8.12
python 1.py 971ms 7.2ms 8.6MB 960ms 0ms cpython 3.13.2
python 1.py 996ms 9.3ms 67.4MB 967ms 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 30ms 10ms cpython 3.13.2
python 8.py timeout 0.0ms 95.8MB 803ms 87ms pypy 3.10.16
python 8.py timeout 0.0ms 14.2MB 40ms 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 3ms ruby/yjit 3.4.2
ruby 4.rb timeout 0.0ms 454.8MB 5133ms 270ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 4.rb 4888ms 24ms 442.4MB 5167ms 227ms truffleruby 24.2.0
python 8.py timeout 0.0ms 14.3MB 47ms 13ms cpython 3.13.2
python 8.py timeout 0.0ms 96.3MB 1323ms 190ms pypy 3.10.16
python 8.py timeout 0.0ms 13.6MB 63ms 20ms 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 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 1433ms 18ms 370.1MB 1793ms 130ms truffleruby 24.2.0
python 8-m.py 1978ms 5.9ms 93.1MB 6363ms 257ms pypy 3.10.16
python 8.py timeout 0.0ms 14.0MB 90ms 17ms cpython 3.13.2
python 8.py timeout 0.0ms 13.2MB 130ms 40ms pyston 3.8.12
ruby 4.rb timeout 0.0ms 13.0MB 4980ms 7ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.8MB 4980ms 7ms ruby/yjit 3.4.2