Programming Language and compiler
Benchmarks

Python VS Javascript benchmarks

Current benchmark data was generated on Mon May 19 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 983ms 44ms 182.9MB 1513ms 227ms bun 1.2.13
javascript 1.js 1066ms 5.1ms 468.4MB 1000ms 220ms node 24.0.2
python 1.py 1208ms 7.9ms 96.1MB 1143ms 53ms pypy 3.10.16
python 1.py timeout 0.0ms 40.9MB 4963ms 20ms cpython 3.13.3
python 1.py timeout 0.0ms 40.5MB 4757ms 230ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 97ms 2.2ms 68.8MB 70ms 13ms pypy 3.10.16
javascript 1.js 102ms 0.9ms 77.4MB 83ms 23ms bun 1.2.13
javascript 1.js 130ms 2.5ms 80.7MB 130ms 27ms node 24.0.2
python 1.py 476ms 3.5ms 11.9MB 453ms 10ms pyston 3.8.12
python 1.py 736ms 14ms 12.8MB 723ms 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 1227ms 12ms 104.8MB 1183ms 33ms pypy 3.10.16
javascript 1.js 1619ms 9.4ms 188.9MB 1593ms 103ms node 24.0.2
javascript 1.js 2477ms 8.3ms 99.5MB 2507ms 57ms bun 1.2.13
python 1.py 2739ms 28ms 25.2MB 2720ms 7ms cpython 3.13.3
python 1.py timeout 0.0ms 17.4MB 4987ms 0ms pyston 3.8.12

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 158ms 3.0ms 74.0MB 143ms 23ms node 24.0.2
javascript 1.js 198ms 1.8ms 85.0MB 220ms 30ms bun 1.2.13
python 1.py 230ms 1.7ms 84.9MB 190ms 27ms pypy 3.10.16
python 1.py 234ms 2.7ms 20.5MB 213ms 10ms cpython 3.13.3
python 1.py 662ms 11ms 16.8MB 647ms 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 252ms 4.6ms 83.0MB 217ms 20ms pypy 3.10.16
javascript 1.js 285ms 5.4ms 66.5MB 297ms 27ms node 24.0.2
python 1.py 361ms 2.9ms 12.7MB 347ms 0ms cpython 3.13.3
javascript 1.js 520ms 3.2ms 75.8MB 493ms 20ms bun 1.2.13
python 1.py 2016ms 25ms 9.6MB 2003ms 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 63.6MB 73ms 13ms pypy 3.10.16
python 1.py 108ms 1.3ms 11.5MB 97ms 0ms cpython 3.13.3
javascript 1.js 127ms 2.1ms 62.6MB 113ms 17ms node 24.0.2
python 1.py 348ms 1.4ms 8.8MB 340ms 0ms pyston 3.8.12
javascript 1.js 499ms 1.6ms 65.8MB 480ms 17ms bun 1.2.13

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1852ms 2.6ms 88.9MB 1803ms 30ms pypy 3.10.16
python 5-m.py 2288ms 4.5ms 65.6MB 3530ms 820ms pypy 3.10.16
python 5-m.py 2438ms 9.1ms 12.5MB 3527ms 990ms pyston 3.8.12
python 1.py 3053ms 14ms 8.1MB 3040ms 0ms pyston 3.8.12
python 5-m.py 3439ms 104ms 13.9MB 4590ms 917ms cpython 3.13.3
python 1.py 4786ms 32ms 8.8MB 4770ms 0ms cpython 3.13.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 249ms 3.9ms 63.3MB 223ms 13ms pypy 3.10.16
python 5-m.py 311ms 2.2ms 12.5MB 393ms 150ms pyston 3.8.12
python 1.py 314ms 3.8ms 8.1MB 300ms 0ms pyston 3.8.12
python 5-m.py 405ms 4.1ms 13.9MB 497ms 133ms cpython 3.13.3
python 5-m.py 442ms 3.9ms 65.6MB 733ms 303ms pypy 3.10.16
python 1.py 495ms 2.8ms 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 0.3ms 7.6MB 0ms 0ms pyston 3.8.12
javascript 1.js 13ms 0.6ms 31.9MB 0ms 0ms bun 1.2.13
python 1.py 13ms 0.5ms 8.8MB 10ms 0ms cpython 3.13.3
python 1.py 29ms 1.2ms 51.7MB 10ms 10ms pypy 3.10.16
javascript 1.js 32ms 0.5ms 50.0MB 16ms 8ms node 24.0.2

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 265ms 10ms 76.7MB 137ms 343ms bun 1.2.13
python 1.py 2261ms 162ms 26.8MB 1047ms 1443ms pyston 3.8.12
python 1.py 2645ms 207ms 27.8MB 1583ms 1443ms cpython 3.13.3
javascript 1.js 2754ms 259ms 289.5MB 2697ms 1270ms node 24.0.2
python 1.py 4692ms 289ms 101.7MB 2833ms 1107ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 94ms 4.8ms 55.0MB 33ms 70ms bun 1.2.13
javascript 1.js 353ms 2.2ms 84.3MB 343ms 123ms node 24.0.2
python 1.py 1100ms 21ms 21.2MB 237ms 247ms pyston 3.8.12
python 1.py 1186ms 33ms 22.8MB 307ms 257ms cpython 3.13.3
python 1.py 1601ms 342ms 85.9MB 707ms 210ms 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 75ms 8.3ms 67.5MB 47ms 20ms bun 1.2.13
javascript 1.js 106ms 3.5ms 73.9MB 87ms 23ms node 24.0.2
python 1.py 200ms 3.6ms 38.1MB 167ms 20ms pyston 3.8.12
python 1.py 218ms 3.4ms 38.6MB 190ms 13ms cpython 3.13.3
python 1.py 298ms 5.1ms 88.7MB 257ms 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 2.0ms 235.3MB 333ms 100ms bun 1.2.13
javascript 1.js 590ms 2.0ms 253.9MB 593ms 127ms node 24.0.2
python 1.py 1826ms 8.1ms 220.5MB 1657ms 157ms pyston 3.8.12
python 1.py 1924ms 22ms 223.8MB 1837ms 73ms pypy 3.10.16
python 1.py 1928ms 3.1ms 221.3MB 1837ms 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 2430ms 39ms 136.4MB 8180ms 343ms pypy 3.10.16
python 3-m.py 3153ms 25ms 34.1MB 11980ms 117ms pyston 3.8.12
python 3.py timeout 0.0ms 35.4MB 97ms 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 387ms 3.7ms 76.5MB 987ms 163ms pypy 3.10.16
python 3-m.py 399ms 2.7ms 14.4MB 1320ms 70ms pyston 3.8.12
python 3-m.py 693ms 7.5ms 15.1MB 2423ms 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 147ms 4.7ms 58.4MB 123ms 10ms pypy 3.10.16
python 1.py 178ms 0.9ms 59.5MB 153ms 10ms pypy 3.10.16
javascript 2.js 305ms 1.5ms 64.5MB 297ms 10ms node 24.0.2
javascript 1.js 571ms 4.9ms 63.0MB 553ms 10ms node 24.0.2
javascript 2.js 665ms 6.1ms 124.1MB 717ms 50ms bun 1.2.13
python 1.py 729ms 8.4ms 8.9MB 720ms 0ms pyston 3.8.12
javascript 1.js 825ms 5.5ms 109.9MB 920ms 73ms bun 1.2.13
python 2.py 843ms 5.9ms 8.5MB 833ms 0ms pyston 3.8.12
python 1.py 1162ms 0.5ms 9.5MB 1150ms 0ms cpython 3.13.3
python 2.py 1336ms 11ms 9.1MB 1327ms 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 340ms 1.6ms 59.2MB 317ms 10ms pypy 3.10.16
python 1.py 379ms 2.4ms 60.4MB 353ms 13ms pypy 3.10.16
javascript 2.js 835ms 0.7ms 70.6MB 817ms 20ms node 24.0.2
javascript 1.js 1622ms 1.9ms 69.6MB 1603ms 13ms node 24.0.2
javascript 2.js 1852ms 9.1ms 124.3MB 2033ms 73ms bun 1.2.13
python 1.py 2141ms 9.4ms 8.9MB 2127ms 0ms pyston 3.8.12
javascript 1.js 2389ms 8.5ms 109.5MB 2717ms 163ms bun 1.2.13
python 2.py 2517ms 56ms 8.5MB 2507ms 0ms pyston 3.8.12
python 1.py 3461ms 59ms 9.5MB 3450ms 0ms cpython 3.13.3
python 2.py 3968ms 103ms 9.1MB 3957ms 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 0.4ms 58.2MB 80ms 10ms pypy 3.10.16
python 1.py 122ms 3.4ms 58.8MB 100ms 10ms pypy 3.10.16
javascript 2.js 166ms 2.3ms 59.0MB 160ms 10ms node 24.0.2
javascript 1.js 169ms 1.1ms 60.0MB 160ms 10ms node 24.0.2
javascript 1.js 320ms 1.9ms 114.0MB 363ms 73ms bun 1.2.13
python 1.py 349ms 0.5ms 8.5MB 340ms 0ms pyston 3.8.12
javascript 2.js 361ms 1.8ms 123.9MB 380ms 53ms bun 1.2.13
python 2.py 388ms 5.3ms 8.1MB 373ms 0ms pyston 3.8.12
python 1.py 561ms 4.3ms 9.3MB 547ms 0ms cpython 3.13.3
python 2.py 636ms 2.8ms 8.8MB 627ms 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 486ms 0.8ms 138.7MB 660ms 113ms bun 1.2.13
javascript 1.js 579ms 3.1ms 229.5MB 577ms 120ms node 24.0.2
python 1.py 2218ms 7.5ms 202.7MB 2107ms 100ms pypy 3.10.16
python 1.py timeout 0.0ms 94.0MB 4950ms 33ms cpython 3.13.3
python 1.py timeout 0.0ms 130.3MB 4933ms 50ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 119ms 4.5ms 85.8MB 107ms 30ms bun 1.2.13
javascript 1.js 163ms 3.2ms 100.3MB 160ms 33ms node 24.0.2
python 1.py 379ms 3.2ms 104.7MB 323ms 47ms pypy 3.10.16
python 1.py 3095ms 22ms 37.3MB 3067ms 10ms cpython 3.13.3
python 1.py timeout 0.0ms 48.9MB 4950ms 33ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6.js 458ms 3.2ms 58.0MB 443ms 10ms node 24.0.2
javascript 6.js 604ms 7.0ms 44.5MB 603ms 3ms bun 1.2.13
python 2.py 1353ms 3.9ms 58.1MB 1330ms 10ms pypy 3.10.16
python 1.py 2669ms 18ms 57.1MB 2643ms 10ms 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 4987ms 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 4983ms 0ms pyston 3.8.12

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6.js 80ms 1.6ms 58.2MB 70ms 7ms node 24.0.2
javascript 6.js 82ms 2.8ms 44.5MB 77ms 3ms bun 1.2.13
python 2.py 177ms 1.3ms 58.1MB 157ms 10ms pypy 3.10.16
python 1.py 305ms 3.3ms 57.0MB 280ms 10ms pypy 3.10.16
python 1.py 928ms 11ms 8.3MB 917ms 0ms pyston 3.8.12
python 2.py 1294ms 2.1ms 8.1MB 1280ms 0ms pyston 3.8.12
python 1.py 2942ms 8.2ms 8.8MB 2930ms 0ms cpython 3.13.3
python 2.py 3274ms 97ms 8.9MB 3263ms 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 2512ms 35ms 369.6MB 2440ms 57ms pypy 3.10.16
python 2.py 2965ms 38ms 632.9MB 2797ms 153ms pyston 3.8.12
python 1.py 4719ms 55ms 320.4MB 4660ms 47ms pyston 3.8.12
python 1.py timeout 0.0ms 321.4MB 4957ms 30ms cpython 3.13.3
python 2.py timeout 0.0ms 633.8MB 4843ms 143ms cpython 3.13.3
python 2.py timeout 0.0ms 959.9MB 4710ms 280ms pypy 3.10.16

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 526ms 2.9ms 135.2MB 490ms 23ms pypy 3.10.16
python 2.py 713ms 3.4ms 164.2MB 670ms 30ms pyston 3.8.12
python 1.py 1069ms 35ms 86.0MB 1047ms 10ms pyston 3.8.12
python 2.py 1424ms 21ms 165.0MB 1380ms 30ms cpython 3.13.3
python 2.py 1518ms 19ms 290.3MB 1427ms 77ms pypy 3.10.16
python 1.py 2702ms 14ms 86.9MB 2680ms 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 1916ms 21ms 8.9MB 1867ms 33ms pyston 3.8.12
python 4.py 1987ms 11ms 9.4MB 1930ms 43ms cpython 3.13.3
python 4.py 2204ms 6.9ms 89.5MB 2160ms 30ms pypy 3.10.16
javascript 3.js 4622ms 14ms 122.3MB 4573ms 47ms node 24.0.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 454ms 4.5ms 8.6MB 443ms 0ms pyston 3.8.12
python 4.py 480ms 17ms 9.3MB 470ms 0ms cpython 3.13.3
python 4.py 559ms 7.0ms 83.9MB 527ms 20ms pypy 3.10.16
javascript 3.js 1012ms 8.0ms 73.2MB 993ms 13ms node 24.0.2

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2256ms 13ms 242.7MB 2197ms 47ms pypy 3.10.16
python 1.py 4793ms 54ms 226.2MB 4607ms 173ms pyston 3.8.12
python 1.py timeout 0.0ms 149.2MB 4940ms 50ms cpython 3.13.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 339ms 2.5ms 86.1MB 300ms 30ms pypy 3.10.16
python 1.py 497ms 0.1ms 30.5MB 460ms 20ms pyston 3.8.12
python 1.py 610ms 7.4ms 29.9MB 583ms 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 2584ms 16ms 61.1MB 2590ms 10ms node 24.0.2
javascript 1.js 2875ms 42ms 82.4MB 2890ms 57ms bun 1.2.13
python 1.py 3236ms 88ms 8.4MB 3220ms 0ms pyston 3.8.12
python 1.py 3528ms 9.8ms 74.5MB 3493ms 20ms pypy 3.10.16
python 1.py 3806ms 7.0ms 8.8MB 3793ms 0ms cpython 3.13.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 687ms 3.9ms 58.5MB 697ms 10ms node 24.0.2
javascript 1.js 746ms 8.0ms 82.4MB 747ms 30ms bun 1.2.13
python 1.py 800ms 6.2ms 8.3MB 790ms 0ms pyston 3.8.12
python 1.py 958ms 3.5ms 8.9MB 947ms 0ms cpython 3.13.3
python 1.py 986ms 1.3ms 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 2184ms 8.5ms 118.8MB 8193ms 60ms node 24.0.2
python 8.py timeout 0.0ms 14.9MB 37ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 95.9MB 810ms 90ms pypy 3.10.16
python 8.py timeout 0.0ms 14.1MB 30ms 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 663ms 3.7ms 117.6MB 2293ms 53ms node 24.0.2
python 8.py timeout 0.0ms 14.6MB 47ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 96.4MB 1343ms 187ms pypy 3.10.16
python 8.py timeout 0.0ms 13.6MB 57ms 10ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 269ms 2.4ms 112.1MB 823ms 50ms node 24.0.2
python 8-m.py 1983ms 24ms 93.1MB 6417ms 257ms pypy 3.10.16
python 8.py timeout 0.0ms 14.3MB 87ms 23ms cpython 3.13.3
python 8.py timeout 0.0ms 13.4MB 140ms 33ms pyston 3.8.12