Programming Language and compiler
Benchmarks

Python VS Javascript 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
javascript 1-m.js 1036ms 29ms 187.6MB 1633ms 273ms bun 1.2.9
python 1.py 1213ms 9.6ms 96.3MB 1153ms 47ms pypy 3.10.16
javascript 1-m.js 1296ms 2.8ms 272.7MB 2237ms 170ms node 23.11.0
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

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
javascript 1.js 102ms 0.7ms 79.0MB 77ms 30ms bun 1.2.9
javascript 1.js 130ms 3.3ms 78.4MB 137ms 23ms node 23.11.0
python 1.py 477ms 2.7ms 11.9MB 450ms 10ms pyston 3.8.12
python 1.py 732ms 10.0ms 12.8MB 720ms 0ms cpython 3.13.3

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
javascript 1.js 1638ms 3.3ms 89.9MB 1727ms 60ms node 23.11.0
javascript 1.js 2497ms 24ms 101.7MB 2517ms 73ms bun 1.2.9
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

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 160ms 0.1ms 72.0MB 147ms 23ms node 23.11.0
javascript 1.js 201ms 1.0ms 86.8MB 220ms 40ms bun 1.2.9
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

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
javascript 1.js 282ms 4.5ms 62.6MB 303ms 20ms node 23.11.0
python 1.py 364ms 4.3ms 12.6MB 350ms 0ms cpython 3.13.3
javascript 1.js 537ms 11ms 77.3MB 513ms 23ms bun 1.2.9
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
javascript 1.js 130ms 1.2ms 61.4MB 150ms 20ms node 23.11.0
python 1.py 350ms 3.1ms 8.8MB 340ms 0ms pyston 3.8.12
javascript 1.js 504ms 0.5ms 67.4MB 480ms 17ms bun 1.2.9

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
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
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
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
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

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
javascript 1.js 13ms 0.4ms 33.3MB 0ms 0ms bun 1.2.9
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
javascript 1.js 33ms 1.0ms 47.8MB 18ms 4ms node 23.11.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 354ms 14ms 77.7MB 163ms 447ms bun 1.2.9
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
javascript 1.js 3078ms 160ms 183.3MB 3010ms 1423ms node 23.11.0
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
javascript 1.bun.js 106ms 6.8ms 55.5MB 40ms 100ms bun 1.2.9
javascript 1.js 376ms 5.1ms 79.2MB 353ms 140ms node 23.11.0
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
javascript 1.js 80ms 6.4ms 68.8MB 53ms 20ms bun 1.2.9
javascript 1.js 125ms 0.8ms 75.8MB 110ms 20ms node 23.11.0
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
python 1.py 299ms 3.1ms 89.5MB 260ms 27ms pypy 3.10.16

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 390ms 3.3ms 236.7MB 333ms 103ms bun 1.2.9
javascript 1.js 730ms 6.0ms 204.3MB 810ms 93ms node 23.11.0
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

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
javascript 2.js 312ms 0.7ms 62.9MB 300ms 13ms node 23.11.0
javascript 1.js 568ms 2.8ms 60.7MB 553ms 13ms node 23.11.0
javascript 2.js 664ms 4.0ms 122.4MB 723ms 50ms bun 1.2.9
python 1.py 726ms 8.6ms 8.9MB 717ms 0ms pyston 3.8.12
javascript 1.js 830ms 3.2ms 111.2MB 930ms 70ms bun 1.2.9
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
javascript 2.js 860ms 1.2ms 68.7MB 850ms 10ms node 23.11.0
javascript 1.js 1604ms 4.1ms 67.8MB 1583ms 13ms node 23.11.0
javascript 2.js 1861ms 7.8ms 122.4MB 2037ms 77ms bun 1.2.9
python 1.py 2133ms 11ms 8.9MB 2120ms 0ms pyston 3.8.12
javascript 1.js 2403ms 5.2ms 111.5MB 2730ms 157ms bun 1.2.9
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
javascript 1.js 165ms 2.5ms 58.0MB 157ms 10ms node 23.11.0
javascript 2.js 169ms 1.3ms 56.6MB 163ms 7ms node 23.11.0
javascript 1.js 325ms 3.1ms 115.1MB 367ms 77ms bun 1.2.9
python 1.py 349ms 7.4ms 8.5MB 337ms 0ms pyston 3.8.12
javascript 2.js 364ms 2.6ms 126.0MB 383ms 57ms bun 1.2.9
python 2.py 390ms 5.2ms 8.1MB 377ms 0ms pyston 3.8.12
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
javascript 1-m.js 519ms 4.4ms 144.8MB 687ms 143ms bun 1.2.9
javascript 1.js 576ms 13ms 130.3MB 670ms 63ms node 23.11.0
python 1.py 2227ms 9.2ms 202.8MB 2113ms 100ms pypy 3.10.16
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

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 120ms 1.1ms 86.9MB 110ms 30ms bun 1.2.9
javascript 1.js 166ms 1.7ms 98.2MB 167ms 40ms node 23.11.0
python 1.py 384ms 2.6ms 105.2MB 327ms 43ms pypy 3.10.16
python 1.py 3481ms 73ms 37.3MB 3450ms 20ms cpython 3.13.3
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
javascript 6.js 462ms 6.7ms 56.1MB 447ms 10ms node 23.11.0
javascript 6.js 601ms 3.1ms 45.5MB 593ms 7ms bun 1.2.9
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

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6.js 81ms 0.6ms 45.6MB 73ms 10ms bun 1.2.9
javascript 6.js 81ms 0.3ms 56.1MB 70ms 10ms node 23.11.0
python 2.py 177ms 2.0ms 57.9MB 157ms 10ms pypy 3.10.16
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
python 2.py 1304ms 5.0ms 8.3MB 1293ms 0ms pyston 3.8.12
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

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
python 1.py 2775ms 8.1ms 86.9MB 2750ms 10ms cpython 3.13.3

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
javascript 3.js 4871ms 6.7ms 87.6MB 4850ms 30ms node 23.11.0

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
javascript 3.js 1057ms 2.7ms 70.6MB 1037ms 20ms node 23.11.0

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
javascript 1.js 2621ms 17ms 60.0MB 2633ms 23ms node 23.11.0
javascript 1.js 2878ms 9.0ms 84.4MB 2900ms 57ms bun 1.2.9
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
javascript 1.js 693ms 5.4ms 57.4MB 700ms 13ms node 23.11.0
javascript 1.js 757ms 15ms 83.9MB 757ms 30ms bun 1.2.9
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
javascript 6-m.js 2192ms 18ms 115.7MB 8290ms 60ms node 23.11.0
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

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 668ms 7.2ms 113.6MB 2350ms 57ms node 23.11.0
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

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 277ms 3.0ms 109.7MB 853ms 53ms node 23.11.0
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