Programming Language and compiler
Benchmarks

Python VS Javascript benchmarks

Current benchmark data was generated on Thu May 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
javascript 1-m.js 961ms 19ms 189.3MB 1440ms 253ms bun 1.2.11
python 1.py 1163ms 3.7ms 96.4MB 1093ms 57ms pypy 3.10.16
javascript 1-m.js 1237ms 36ms 250.6MB 2120ms 157ms node 23.11.0
python 1.py timeout 0.0ms 41.0MB 4967ms 20ms cpython 3.13.3
python 1.py timeout 0.0ms 40.6MB 4747ms 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 1.4ms 68.9MB 67ms 20ms pypy 3.10.16
javascript 1.js 101ms 3.1ms 79.5MB 77ms 30ms bun 1.2.11
javascript 1.js 125ms 2.3ms 78.7MB 127ms 27ms node 23.11.0
python 1.py 477ms 5.2ms 11.9MB 453ms 10ms pyston 3.8.12
python 1.py 735ms 1.9ms 12.9MB 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 1189ms 5.0ms 104.1MB 1140ms 33ms pypy 3.10.16
javascript 1.js 1592ms 8.1ms 90.4MB 1680ms 50ms node 23.11.0
javascript 1.js 2477ms 15ms 101.1MB 2510ms 60ms bun 1.2.11
python 1.py 2813ms 42ms 25.2MB 2797ms 7ms cpython 3.13.3
python 1.py timeout 0.0ms 17.3MB 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 3.2ms 71.9MB 143ms 20ms node 23.11.0
javascript 1.js 198ms 3.1ms 86.6MB 223ms 30ms bun 1.2.11
python 1.py 219ms 1.1ms 84.8MB 180ms 20ms pypy 3.10.16
python 1.py 232ms 1.3ms 20.5MB 210ms 0ms cpython 3.13.3
python 1.py 689ms 14ms 16.8MB 670ms 3ms pyston 3.8.12

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 254ms 1.8ms 83.3MB 213ms 27ms pypy 3.10.16
javascript 1.js 271ms 3.9ms 63.7MB 287ms 23ms node 23.11.0
python 1.py 358ms 0.5ms 12.7MB 343ms 0ms cpython 3.13.3
javascript 1.js 522ms 4.8ms 77.6MB 497ms 20ms bun 1.2.11
python 1.py 2007ms 3.8ms 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 101ms 2.1ms 63.4MB 77ms 13ms pypy 3.10.16
python 1.py 110ms 2.3ms 11.6MB 97ms 0ms cpython 3.13.3
javascript 1.js 124ms 0.7ms 61.4MB 143ms 17ms node 23.11.0
python 1.py 347ms 0.6ms 8.8MB 340ms 0ms pyston 3.8.12
javascript 1.js 500ms 3.0ms 67.6MB 477ms 20ms bun 1.2.11

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1844ms 2.1ms 88.9MB 1803ms 27ms pypy 3.10.16
python 5-m.py 2282ms 26ms 65.6MB 3447ms 880ms pypy 3.10.16
python 5-m.py 2440ms 42ms 12.5MB 3553ms 983ms pyston 3.8.12
python 1.py 3029ms 17ms 8.1MB 3013ms 0ms pyston 3.8.12
python 5-m.py 3360ms 25ms 13.8MB 4480ms 893ms cpython 3.13.3
python 1.py 4658ms 29ms 8.9MB 4647ms 0ms cpython 3.13.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 248ms 3.6ms 63.3MB 217ms 13ms pypy 3.10.16
python 5-m.py 310ms 2.9ms 12.5MB 413ms 133ms pyston 3.8.12
python 1.py 316ms 5.2ms 8.1MB 303ms 0ms pyston 3.8.12
python 5-m.py 405ms 7.8ms 13.9MB 507ms 127ms cpython 3.13.3
python 5-m.py 437ms 3.3ms 65.4MB 743ms 283ms pypy 3.10.16
python 1.py 475ms 3.8ms 8.8MB 463ms 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 12ms 0.6ms 7.6MB 0ms 0ms pyston 3.8.12
javascript 1.js 13ms 0.3ms 33.4MB 0ms 10ms bun 1.2.11
python 1.py 14ms 1.0ms 8.6MB 10ms 0ms cpython 3.13.3
python 1.py 29ms 1.3ms 51.6MB 10ms 10ms pypy 3.10.16
javascript 1.js 30ms 0.8ms 47.7MB 18ms 2ms 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 333ms 15ms 76.1MB 143ms 430ms bun 1.2.11
python 1.py 2132ms 35ms 26.6MB 1107ms 1593ms pyston 3.8.12
python 1.py 2410ms 406ms 27.5MB 1607ms 1620ms cpython 3.13.3
javascript 1.js 3165ms 250ms 189.3MB 3020ms 1490ms node 23.11.0
python 1.py 4759ms 237ms 102.9MB 2890ms 1193ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 118ms 5.0ms 55.9MB 33ms 90ms bun 1.2.11
javascript 1.js 355ms 3.4ms 80.2MB 323ms 133ms node 23.11.0
python 1.py 1092ms 9.4ms 21.3MB 240ms 280ms pyston 3.8.12
python 1.py 1202ms 176ms 22.9MB 323ms 280ms cpython 3.13.3
python 1.py 1695ms 370ms 86.8MB 713ms 233ms 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 76ms 7.9ms 68.5MB 47ms 23ms bun 1.2.11
javascript 1.js 111ms 1.2ms 75.3MB 100ms 20ms node 23.11.0
python 1.py 196ms 2.9ms 38.7MB 163ms 20ms pyston 3.8.12
python 1.py 216ms 6.3ms 38.7MB 193ms 10ms cpython 3.13.3
python 1.py 298ms 2.7ms 88.8MB 257ms 23ms pypy 3.10.16

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 392ms 3.5ms 236.5MB 337ms 97ms bun 1.2.11
javascript 1.js 688ms 0.9ms 202.5MB 797ms 87ms node 23.11.0
python 1.py 1820ms 7.0ms 250.6MB 1650ms 157ms pyston 3.8.12
python 1.py 1922ms 24ms 223.6MB 1833ms 73ms pypy 3.10.16
python 1.py 1936ms 7.3ms 221.5MB 1827ms 97ms 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 2338ms 1.4ms 136.4MB 7957ms 330ms pypy 3.10.16
python 3-m.py 3049ms 13ms 34.1MB 11583ms 117ms pyston 3.8.12
python 3.py timeout 0.0ms 35.9MB 90ms 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 378ms 4.0ms 75.7MB 953ms 153ms pypy 3.10.16
python 3-m.py 396ms 3.0ms 14.3MB 1300ms 67ms pyston 3.8.12
python 3-m.py 666ms 1.7ms 15.2MB 2340ms 70ms 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 146ms 2.0ms 58.3MB 120ms 10ms pypy 3.10.16
python 1.py 182ms 1.5ms 59.4MB 157ms 13ms pypy 3.10.16
javascript 2.js 307ms 2.3ms 62.8MB 297ms 13ms node 23.11.0
javascript 1.js 555ms 1.1ms 60.6MB 540ms 10ms node 23.11.0
javascript 2.js 654ms 7.6ms 121.9MB 707ms 60ms bun 1.2.11
python 1.py 719ms 4.1ms 8.9MB 707ms 0ms pyston 3.8.12
javascript 1.js 824ms 5.1ms 111.6MB 920ms 73ms bun 1.2.11
python 2.py 846ms 13ms 8.5MB 833ms 0ms pyston 3.8.12
python 1.py 1151ms 14ms 9.5MB 1137ms 0ms cpython 3.13.3
python 2.py 1319ms 13ms 9.1MB 1307ms 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 338ms 2.2ms 59.3MB 313ms 10ms pypy 3.10.16
python 1.py 385ms 11ms 60.3MB 360ms 13ms pypy 3.10.16
javascript 2.js 840ms 2.4ms 68.5MB 830ms 17ms node 23.11.0
javascript 1.js 1579ms 1.6ms 68.0MB 1563ms 13ms node 23.11.0
javascript 2.js 1820ms 2.5ms 122.2MB 1987ms 77ms bun 1.2.11
python 1.py 2132ms 15ms 8.9MB 2120ms 0ms pyston 3.8.12
javascript 1.js 2446ms 103ms 112.9MB 2770ms 150ms bun 1.2.11
python 2.py 2534ms 37ms 8.5MB 2523ms 0ms pyston 3.8.12
python 1.py 3411ms 66ms 9.5MB 3397ms 0ms cpython 3.13.3
python 2.py 3945ms 23ms 9.1MB 3933ms 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 105ms 0.6ms 58.1MB 80ms 10ms pypy 3.10.16
python 1.py 121ms 3.1ms 58.8MB 97ms 10ms pypy 3.10.16
javascript 1.js 161ms 1.1ms 58.0MB 150ms 7ms node 23.11.0
javascript 2.js 163ms 0.7ms 56.5MB 160ms 7ms node 23.11.0
javascript 1.js 317ms 2.2ms 115.6MB 353ms 77ms bun 1.2.11
python 1.py 345ms 3.5ms 8.5MB 330ms 0ms pyston 3.8.12
javascript 2.js 354ms 4.5ms 125.5MB 377ms 50ms bun 1.2.11
python 2.py 387ms 4.3ms 8.1MB 373ms 0ms pyston 3.8.12
python 1.py 543ms 3.8ms 9.3MB 533ms 0ms cpython 3.13.3
python 2.py 634ms 7.0ms 8.8MB 620ms 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 487ms 5.6ms 135.7MB 657ms 133ms bun 1.2.11
javascript 1.js 533ms 5.3ms 130.5MB 620ms 57ms node 23.11.0
python 1.py 2205ms 15ms 202.6MB 2087ms 107ms pypy 3.10.16
python 1.py timeout 0.0ms 93.9MB 4953ms 37ms cpython 3.13.3
python 1.py timeout 0.0ms 130.3MB 4937ms 50ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 115ms 2.7ms 87.3MB 100ms 30ms bun 1.2.11
javascript 1.js 158ms 1.6ms 98.3MB 160ms 33ms node 23.11.0
python 1.py 374ms 1.8ms 105.3MB 317ms 40ms pypy 3.10.16
python 1.py 2897ms 36ms 37.3MB 2873ms 10ms cpython 3.13.3
python 1.py timeout 0.0ms 48.9MB 4940ms 50ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6.js 457ms 5.8ms 56.0MB 443ms 10ms node 23.11.0
javascript 6.js 609ms 19ms 45.5MB 600ms 3ms bun 1.2.11
python 2.py 1359ms 3.9ms 58.1MB 1333ms 10ms pypy 3.10.16
python 1.py 2652ms 15ms 57.1MB 2627ms 13ms pypy 3.10.16
python 1.py timeout 0.0ms 8.8MB 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 76ms 0.8ms 55.8MB 67ms 3ms node 23.11.0
javascript 6.js 80ms 2.5ms 45.6MB 73ms 3ms bun 1.2.11
python 2.py 180ms 3.6ms 57.9MB 153ms 10ms pypy 3.10.16
python 1.py 303ms 3.1ms 57.2MB 280ms 10ms pypy 3.10.16
python 1.py 926ms 7.5ms 8.3MB 910ms 0ms pyston 3.8.12
python 2.py 1300ms 5.2ms 8.3MB 1293ms 0ms pyston 3.8.12
python 1.py 2952ms 2.0ms 8.9MB 2940ms 0ms cpython 3.13.3
python 2.py 3262ms 188ms 8.9MB 3250ms 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 2568ms 13ms 369.6MB 2497ms 60ms pypy 3.10.16
python 2.py 3071ms 131ms 633.0MB 2887ms 167ms pyston 3.8.12
python 1.py 4763ms 47ms 320.4MB 4703ms 50ms pyston 3.8.12
python 1.py timeout 0.0ms 321.3MB 4960ms 20ms cpython 3.13.3
python 2.py timeout 0.0ms 633.7MB 4823ms 163ms cpython 3.13.3
python 2.py timeout 0.0ms 959.9MB 4720ms 267ms pypy 3.10.16

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 533ms 4.7ms 135.3MB 493ms 23ms pypy 3.10.16
python 2.py 719ms 1.6ms 164.2MB 673ms 30ms pyston 3.8.12
python 1.py 1046ms 3.4ms 86.1MB 1020ms 10ms pyston 3.8.12
python 2.py 1404ms 6.2ms 165.0MB 1367ms 27ms cpython 3.13.3
python 2.py 1537ms 17ms 290.2MB 1447ms 77ms pypy 3.10.16
python 1.py 2673ms 5.0ms 86.9MB 2650ms 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 1915ms 12ms 8.9MB 1873ms 27ms pyston 3.8.12
python 4.py 1986ms 7.7ms 9.4MB 1933ms 40ms cpython 3.13.3
python 4.py 2182ms 4.7ms 89.6MB 2143ms 27ms pypy 3.10.16
javascript 3.js 4795ms 24ms 88.0MB 4770ms 27ms node 23.11.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 451ms 2.1ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 470ms 1.0ms 9.1MB 460ms 0ms cpython 3.13.3
python 4.py 550ms 2.6ms 83.9MB 520ms 20ms pypy 3.10.16
javascript 3.js 1040ms 4.3ms 70.7MB 1020ms 13ms 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 2242ms 6.5ms 243.1MB 2183ms 50ms pypy 3.10.16
python 1.py 4755ms 17ms 226.2MB 4557ms 183ms pyston 3.8.12
python 1.py timeout 0.0ms 149.3MB 4917ms 67ms cpython 3.13.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 326ms 0.8ms 86.5MB 287ms 23ms pypy 3.10.16
python 1.py 500ms 7.3ms 30.3MB 470ms 20ms pyston 3.8.12
python 1.py 603ms 7.0ms 30.0MB 573ms 13ms cpython 3.13.3

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2491ms 5.7ms 59.8MB 2493ms 23ms node 23.11.0
javascript 1.js 2807ms 14ms 84.1MB 2820ms 53ms bun 1.2.11
python 1.py 3153ms 7.0ms 8.3MB 3143ms 0ms pyston 3.8.12
python 1.py 3535ms 16ms 74.4MB 3503ms 20ms pypy 3.10.16
python 1.py 3806ms 27ms 8.8MB 3797ms 0ms cpython 3.13.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 663ms 0.8ms 57.9MB 673ms 7ms node 23.11.0
javascript 1.js 731ms 8.9ms 84.0MB 730ms 30ms bun 1.2.11
python 1.py 802ms 6.6ms 8.3MB 793ms 0ms pyston 3.8.12
python 1.py 961ms 3.4ms 8.8MB 947ms 0ms cpython 3.13.3
python 1.py 988ms 8.0ms 67.4MB 957ms 20ms 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 2187ms 17ms 115.2MB 8297ms 57ms node 23.11.0
python 8.py timeout 0.0ms 14.9MB 40ms 7ms cpython 3.13.3
python 8.py timeout 0.0ms 95.8MB 763ms 77ms pypy 3.10.16
python 8.py timeout 0.0ms 14.1MB 30ms 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 649ms 2.4ms 112.8MB 2323ms 50ms node 23.11.0
python 8.py timeout 0.0ms 14.5MB 43ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 96.4MB 1267ms 177ms pypy 3.10.16
python 8.py timeout 0.0ms 13.7MB 53ms 17ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 270ms 4.4ms 109.9MB 840ms 50ms node 23.11.0
python 8-m.py 1935ms 16ms 93.6MB 6317ms 250ms pypy 3.10.16
python 8.py timeout 0.0ms 14.3MB 83ms 17ms cpython 3.13.3
python 8.py timeout 0.0ms 13.1MB 137ms 30ms pyston 3.8.12