Programming Language and compiler
Benchmarks

Javascript VS Python benchmarks

Current benchmark data was generated on Sun Jul 13 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
javascript 1.js 1052ms 7.6ms 474.5MB 977ms 230ms node 24.4.0
javascript 1-m.js 1079ms 165ms 176.6MB 1527ms 260ms bun 1.2.18
python 1.py 1162ms 7.5ms 96.8MB 1097ms 47ms pypy 3.11.13
python 1.py timeout 0.0ms 41.0MB 4973ms 10ms cpython 3.13.5
python 1.py timeout 0.0ms 40.5MB 4743ms 240ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 94ms 1.5ms 68.2MB 67ms 13ms pypy 3.11.13
javascript 1.js 98ms 1.3ms 77.8MB 77ms 27ms bun 1.2.18
javascript 1.js 128ms 1.6ms 81.3MB 130ms 20ms node 24.4.0
python 1.py 478ms 3.6ms 11.9MB 457ms 10ms pyston 3.8.12
python 1.py 727ms 3.3ms 12.9MB 717ms 0ms cpython 3.13.5

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1241ms 47ms 104.7MB 1190ms 33ms pypy 3.11.13
javascript 1.js 1600ms 6.3ms 189.8MB 1570ms 100ms node 24.4.0
javascript 1.js 2457ms 68ms 101.6MB 2500ms 63ms bun 1.2.18
python 1.py 2671ms 7.4ms 25.4MB 2650ms 10ms cpython 3.13.5
python 1.py timeout 0.0ms 17.4MB 4980ms 7ms pyston 3.8.12

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 157ms 1.8ms 75.4MB 143ms 23ms node 24.4.0
javascript 1.js 216ms 4.5ms 88.7MB 250ms 33ms bun 1.2.18
python 1.py 223ms 2.2ms 85.2MB 187ms 23ms pypy 3.11.13
python 1.py 228ms 1.3ms 20.6MB 203ms 10ms cpython 3.13.5
python 1.py 660ms 16ms 16.8MB 643ms 0ms pyston 3.8.12

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 266ms 3.3ms 84.9MB 227ms 20ms pypy 3.11.13
javascript 1.js 278ms 4.4ms 67.5MB 290ms 27ms node 24.4.0
python 1.py 362ms 3.7ms 12.6MB 347ms 0ms cpython 3.13.5
javascript 1.js 518ms 1.5ms 75.6MB 490ms 23ms bun 1.2.18
python 1.py 2007ms 3.9ms 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 113ms 2.9ms 65.3MB 87ms 13ms pypy 3.11.13
javascript 1.js 126ms 2.6ms 63.6MB 117ms 13ms node 24.4.0
python 1.py 134ms 46ms 12.3MB 100ms 0ms cpython 3.13.5
python 1.py 349ms 2.6ms 8.8MB 340ms 0ms pyston 3.8.12
javascript 1.js 511ms 2.2ms 65.1MB 483ms 20ms bun 1.2.18

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
javascript 1.js 12ms 0.4ms 31.6MB 0ms 0ms bun 1.2.18
python 1.py 14ms 1.2ms 8.8MB 10ms 0ms cpython 3.13.5
python 1.py 30ms 0.8ms 52.3MB 10ms 10ms pypy 3.11.13
javascript 1.js 31ms 0.6ms 50.8MB 16ms 6ms node 24.4.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 245ms 9.4ms 77.8MB 127ms 323ms bun 1.2.18
python 1.py 2132ms 36ms 26.6MB 1080ms 1440ms pyston 3.8.12
javascript 1.js 2524ms 226ms 270.7MB 2467ms 1187ms node 24.4.0
python 1.py 2538ms 364ms 27.6MB 1573ms 1443ms cpython 3.13.5
python 1.py 4714ms 375ms 102.2MB 3087ms 1100ms pypy 3.11.13

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 96ms 12ms 54.6MB 33ms 73ms bun 1.2.18
javascript 1.js 344ms 3.3ms 85.1MB 327ms 127ms node 24.4.0
python 1.py 1088ms 2.8ms 21.3MB 237ms 253ms pyston 3.8.12
python 1.py 1193ms 73ms 22.9MB 313ms 247ms cpython 3.13.5
python 1.py 1730ms 340ms 87.1MB 750ms 210ms pypy 3.11.13

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 64ms 1.3ms 62.4MB 37ms 13ms bun 1.2.18
javascript 1.js 102ms 0.9ms 74.8MB 90ms 20ms node 24.4.0
python 1.py 201ms 0.9ms 38.1MB 167ms 23ms pyston 3.8.12
python 1.py 217ms 2.1ms 38.7MB 193ms 10ms cpython 3.13.5
python 1.py 451ms 4.1ms 109.3MB 403ms 37ms pypy 3.11.13

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 352ms 0.8ms 200.9MB 317ms 83ms bun 1.2.18
javascript 1.js 575ms 2.3ms 204.0MB 600ms 110ms node 24.4.0
python 1.py 1831ms 9.9ms 220.5MB 1663ms 157ms pyston 3.8.12
python 1.py 1931ms 9.0ms 222.0MB 1827ms 90ms cpython 3.13.5
python 1.py 3242ms 13ms 365.1MB 3083ms 140ms pypy 3.11.13

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 154ms 2.4ms 58.9MB 130ms 10ms pypy 3.11.13
python 1.py 187ms 3.8ms 59.8MB 160ms 10ms pypy 3.11.13
javascript 2.js 308ms 3.4ms 64.9MB 300ms 10ms node 24.4.0
javascript 1.js 572ms 4.7ms 63.7MB 557ms 10ms node 24.4.0
javascript 2.js 688ms 11ms 123.5MB 753ms 57ms bun 1.2.18
python 1.py 730ms 3.4ms 8.9MB 720ms 0ms pyston 3.8.12
javascript 1.js 822ms 6.8ms 106.5MB 900ms 87ms bun 1.2.18
python 2.py 845ms 19ms 8.5MB 833ms 0ms pyston 3.8.12
python 1.py 1136ms 8.0ms 9.5MB 1123ms 0ms cpython 3.13.5
python 2.py 1323ms 19ms 9.3MB 1310ms 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 361ms 2.1ms 59.7MB 330ms 10ms pypy 3.11.13
python 1.py 401ms 4.8ms 60.9MB 377ms 13ms pypy 3.11.13
javascript 2.js 837ms 7.0ms 71.6MB 820ms 17ms node 24.4.0
javascript 1.js 1623ms 6.8ms 70.0MB 1603ms 13ms node 24.4.0
javascript 2.js 1931ms 13ms 123.3MB 2110ms 67ms bun 1.2.18
python 1.py 2157ms 16ms 8.9MB 2143ms 0ms pyston 3.8.12
javascript 1.js 2398ms 29ms 111.6MB 2653ms 207ms bun 1.2.18
python 2.py 2513ms 23ms 8.5MB 2503ms 0ms pyston 3.8.12
python 1.py 3335ms 53ms 9.5MB 3320ms 0ms cpython 3.13.5
python 2.py 3942ms 29ms 9.3MB 3930ms 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 109ms 3.1ms 58.1MB 87ms 10ms pypy 3.11.13
python 1.py 124ms 3.2ms 59.4MB 103ms 10ms pypy 3.11.13
javascript 2.js 163ms 0.9ms 59.3MB 157ms 10ms node 24.4.0
javascript 1.js 169ms 0.4ms 61.0MB 153ms 10ms node 24.4.0
javascript 1.js 317ms 1.9ms 130.9MB 350ms 73ms bun 1.2.18
python 1.py 361ms 6.0ms 8.5MB 347ms 0ms pyston 3.8.12
javascript 2.js 372ms 1.1ms 125.8MB 400ms 50ms bun 1.2.18
python 2.py 388ms 3.0ms 8.1MB 377ms 0ms pyston 3.8.12
python 1.py 534ms 6.3ms 9.3MB 523ms 0ms cpython 3.13.5
python 2.py 638ms 7.1ms 8.9MB 627ms 0ms cpython 3.13.5

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 468ms 20ms 136.0MB 607ms 117ms bun 1.2.18
javascript 1.js 563ms 3.7ms 230.8MB 563ms 117ms node 24.4.0
python 1.py 2184ms 9.5ms 204.9MB 2073ms 97ms pypy 3.11.13
python 1.py timeout 0.0ms 94.1MB 4960ms 27ms cpython 3.13.5
python 1.py timeout 0.0ms 130.4MB 4940ms 47ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 117ms 2.5ms 85.9MB 103ms 30ms bun 1.2.18
javascript 1.js 157ms 1.0ms 100.4MB 153ms 33ms node 24.4.0
python 1.py 378ms 3.7ms 105.2MB 320ms 47ms pypy 3.11.13
python 1.py 2994ms 19ms 37.4MB 2970ms 10ms cpython 3.13.5
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
javascript 6.js 455ms 2.0ms 58.8MB 447ms 3ms node 24.4.0
javascript 6.js 607ms 14ms 44.8MB 610ms 0ms bun 1.2.18
python 2.py 1348ms 4.2ms 60.6MB 1320ms 10ms pypy 3.11.13
python 1.py 2705ms 69ms 57.8MB 2677ms 13ms 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

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6.js 79ms 3.2ms 58.9MB 67ms 10ms node 24.4.0
javascript 6.js 80ms 1.8ms 44.9MB 83ms 7ms bun 1.2.18
python 2.py 178ms 3.3ms 58.3MB 153ms 10ms pypy 3.11.13
python 1.py 309ms 4.0ms 57.8MB 287ms 10ms pypy 3.11.13
python 1.py 936ms 11ms 8.3MB 927ms 0ms pyston 3.8.12
python 2.py 1312ms 18ms 8.3MB 1300ms 0ms pyston 3.8.12
python 1.py 2893ms 26ms 8.9MB 2883ms 0ms cpython 3.13.5
python 2.py 3043ms 14ms 9.0MB 3030ms 0ms cpython 3.13.5

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2515ms 10ms 62.1MB 2517ms 10ms node 24.4.0
javascript 1.js 2811ms 7.5ms 83.4MB 2830ms 50ms bun 1.2.18
python 1.py 3177ms 13ms 8.3MB 3163ms 0ms pyston 3.8.12
python 1.py 3587ms 25ms 75.4MB 3547ms 27ms pypy 3.11.13
python 1.py 3805ms 16ms 8.9MB 3790ms 0ms cpython 3.13.5

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 672ms 3.5ms 58.8MB 680ms 7ms node 24.4.0
javascript 1.js 742ms 1.2ms 82.3MB 740ms 30ms bun 1.2.18
python 1.py 802ms 4.0ms 8.3MB 793ms 0ms pyston 3.8.12
python 1.py 961ms 8.5ms 8.9MB 950ms 0ms cpython 3.13.5
python 1.py 996ms 3.5ms 68.6MB 963ms 17ms pypy 3.11.13

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1921ms 13ms 8.9MB 1873ms 33ms pyston 3.8.12
python 4.py 1974ms 0.7ms 9.5MB 1920ms 40ms cpython 3.13.5
python 4.py 2156ms 3.3ms 89.6MB 2117ms 27ms pypy 3.11.13
javascript 3.js 4804ms 45ms 122.6MB 4760ms 47ms node 24.4.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 454ms 1.7ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 470ms 3.8ms 9.4MB 457ms 0ms cpython 3.13.5
python 4.py 541ms 4.5ms 83.8MB 503ms 23ms pypy 3.11.13
javascript 3.js 1034ms 5.1ms 73.9MB 1010ms 17ms node 24.4.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2178ms 17ms 118.9MB 8247ms 70ms node 24.4.0
python 8.py timeout 0.0ms 14.8MB 33ms 10ms cpython 3.13.5
python 8.py timeout 0.0ms 94.7MB 680ms 60ms pypy 3.11.13
python 8.py timeout 0.0ms 14.2MB 33ms 13ms pyston 3.8.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 654ms 3.1ms 119.7MB 2343ms 57ms node 24.4.0
python 8.py timeout 0.0ms 14.5MB 43ms 10ms cpython 3.13.5
python 8.py timeout 0.0ms 97.8MB 1170ms 147ms pypy 3.11.13
python 8.py timeout 0.0ms 13.6MB 57ms 20ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 273ms 2.7ms 116.3MB 840ms 53ms node 24.4.0
python 8-m.py 2134ms 4.9ms 94.1MB 7090ms 240ms pypy 3.11.13
python 8.py timeout 0.0ms 14.0MB 87ms 17ms cpython 3.13.5
python 8.py timeout 0.0ms 13.2MB 133ms 33ms pyston 3.8.12