Programming Language and compiler
Benchmarks

Javascript VS Python benchmarks

Current benchmark data was generated on Mon Jun 23 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 947ms 18ms 176.8MB 1447ms 207ms bun 1.2.17
javascript 1.js 1054ms 6.2ms 453.4MB 980ms 223ms node 24.2.0
python 1.py 1191ms 15ms 96.3MB 1123ms 53ms pypy 3.10.16
python 1.py timeout 0.0ms 41.0MB 4973ms 17ms cpython 3.13.5
python 1.py timeout 0.0ms 40.5MB 4750ms 230ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 100ms 0.8ms 77.5MB 77ms 27ms bun 1.2.17
python 1.py 101ms 1.2ms 68.6MB 67ms 20ms pypy 3.10.16
javascript 1.js 127ms 1.5ms 81.2MB 130ms 20ms node 24.2.0
python 1.py 476ms 3.1ms 11.9MB 453ms 10ms pyston 3.8.12
python 1.py 734ms 12ms 13.0MB 723ms 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 1226ms 4.7ms 105.6MB 1180ms 37ms pypy 3.10.16
javascript 1.js 1629ms 9.3ms 189.9MB 1603ms 103ms node 24.2.0
javascript 1.js 2507ms 85ms 101.4MB 2553ms 67ms bun 1.2.17
python 1.py 2700ms 31ms 25.4MB 2673ms 10ms cpython 3.13.5
python 1.py timeout 0.0ms 17.4MB 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 158ms 2.0ms 75.4MB 140ms 23ms node 24.2.0
javascript 1.js 200ms 4.1ms 86.8MB 237ms 30ms bun 1.2.17
python 1.py 226ms 2.3ms 84.8MB 190ms 23ms pypy 3.10.16
python 1.py 234ms 4.1ms 20.6MB 213ms 7ms cpython 3.13.5
python 1.py 649ms 4.8ms 16.8MB 630ms 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 3.5ms 83.4MB 217ms 20ms pypy 3.10.16
javascript 1.js 302ms 4.5ms 67.7MB 320ms 23ms node 24.2.0
python 1.py 362ms 1.9ms 12.6MB 343ms 3ms cpython 3.13.5
javascript 1.js 519ms 3.3ms 75.7MB 497ms 20ms bun 1.2.17
python 1.py 2004ms 4.0ms 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 102ms 1.5ms 63.6MB 77ms 10ms pypy 3.10.16
python 1.py 112ms 2.1ms 12.3MB 100ms 0ms cpython 3.13.5
javascript 1.js 136ms 13ms 64.5MB 120ms 17ms node 24.2.0
python 1.py 352ms 1.3ms 8.8MB 340ms 0ms pyston 3.8.12
javascript 1.js 512ms 13ms 65.7MB 487ms 23ms bun 1.2.17

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 11ms 0.5ms 7.6MB 0ms 0ms pyston 3.8.12
javascript 1.js 13ms 0.5ms 31.3MB 0ms 0ms bun 1.2.17
python 1.py 14ms 1.1ms 8.9MB 0ms 0ms cpython 3.13.5
python 1.py 29ms 1.3ms 51.7MB 10ms 10ms pypy 3.10.16
javascript 1.js 33ms 1.9ms 50.9MB 18ms 8ms node 24.2.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 270ms 14ms 75.3MB 140ms 333ms bun 1.2.17
python 1.py 2259ms 149ms 27.1MB 1080ms 1457ms pyston 3.8.12
python 1.py 2431ms 280ms 27.8MB 1587ms 1453ms cpython 3.13.5
javascript 1.js 2465ms 105ms 269.7MB 2423ms 1127ms node 24.2.0
python 1.py 4586ms 73ms 106.9MB 2877ms 1087ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 104ms 11ms 55.4MB 37ms 83ms bun 1.2.17
javascript 1.js 375ms 26ms 85.9MB 360ms 133ms node 24.2.0
python 1.py 1094ms 13ms 21.4MB 237ms 253ms pyston 3.8.12
python 1.py 1171ms 74ms 23.1MB 320ms 250ms cpython 3.13.5
python 1.py 1635ms 91ms 86.8MB 703ms 207ms 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 65ms 1.2ms 62.5MB 40ms 13ms bun 1.2.17
javascript 1.js 104ms 1.9ms 74.8MB 90ms 20ms node 24.2.0
python 1.py 202ms 3.1ms 38.1MB 170ms 20ms pyston 3.8.12
python 1.py 219ms 2.1ms 38.7MB 193ms 10ms cpython 3.13.5
python 1.py 303ms 7.2ms 88.8MB 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 350ms 1.2ms 200.9MB 303ms 87ms bun 1.2.17
javascript 1.js 573ms 4.9ms 254.9MB 590ms 117ms node 24.2.0
python 1.py 1859ms 12ms 220.5MB 1677ms 170ms pyston 3.8.12
python 1.py 1912ms 15ms 222.9MB 1833ms 67ms pypy 3.10.16
python 1.py 2054ms 243ms 222.0MB 1957ms 83ms cpython 3.13.5

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 148ms 3.7ms 58.4MB 123ms 10ms pypy 3.10.16
python 1.py 182ms 4.5ms 59.4MB 160ms 10ms pypy 3.10.16
javascript 2.js 305ms 0.7ms 65.3MB 293ms 10ms node 24.2.0
javascript 1.js 565ms 3.2ms 63.6MB 550ms 13ms node 24.2.0
javascript 2.js 669ms 8.0ms 122.9MB 737ms 53ms bun 1.2.17
python 1.py 742ms 13ms 8.9MB 730ms 0ms pyston 3.8.12
javascript 1.js 843ms 21ms 106.1MB 907ms 93ms bun 1.2.17
python 2.py 861ms 17ms 8.5MB 850ms 0ms pyston 3.8.12
python 1.py 1135ms 8.0ms 9.5MB 1120ms 0ms cpython 3.13.5
python 2.py 1359ms 9.5ms 9.4MB 1347ms 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 340ms 3.5ms 59.4MB 317ms 10ms pypy 3.10.16
python 1.py 378ms 4.8ms 60.3MB 353ms 13ms pypy 3.10.16
javascript 2.js 835ms 6.9ms 71.9MB 820ms 17ms node 24.2.0
javascript 1.js 1619ms 16ms 70.0MB 1603ms 13ms node 24.2.0
javascript 2.js 1893ms 6.7ms 123.5MB 2067ms 73ms bun 1.2.17
python 1.py 2158ms 21ms 8.9MB 2147ms 0ms pyston 3.8.12
javascript 1.js 2431ms 36ms 105.9MB 2720ms 160ms bun 1.2.17
python 2.py 2527ms 78ms 8.5MB 2513ms 0ms pyston 3.8.12
python 1.py 3383ms 12ms 9.5MB 3370ms 0ms cpython 3.13.5
python 2.py 3989ms 100ms 9.3MB 3973ms 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 107ms 0.7ms 58.2MB 80ms 13ms pypy 3.10.16
python 1.py 121ms 2.3ms 58.8MB 100ms 10ms pypy 3.10.16
javascript 2.js 163ms 1.1ms 59.8MB 157ms 10ms node 24.2.0
javascript 1.js 166ms 2.3ms 61.0MB 150ms 10ms node 24.2.0
javascript 1.js 327ms 3.4ms 130.8MB 357ms 80ms bun 1.2.17
python 1.py 356ms 7.7ms 8.5MB 343ms 0ms pyston 3.8.12
javascript 2.js 368ms 3.7ms 124.9MB 393ms 60ms bun 1.2.17
python 2.py 388ms 3.7ms 8.1MB 377ms 0ms pyston 3.8.12
python 1.py 542ms 5.2ms 9.4MB 530ms 0ms cpython 3.13.5
python 2.py 648ms 0.8ms 8.9MB 637ms 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 473ms 10ms 137.8MB 617ms 117ms bun 1.2.17
javascript 1.js 565ms 6.5ms 230.7MB 567ms 110ms node 24.2.0
python 1.py 2233ms 15ms 202.7MB 2127ms 97ms pypy 3.10.16
python 1.py timeout 0.0ms 94.1MB 4957ms 33ms cpython 3.13.5
python 1.py timeout 0.0ms 130.4MB 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 116ms 2.9ms 84.8MB 100ms 33ms bun 1.2.17
javascript 1.js 160ms 2.6ms 101.3MB 157ms 40ms node 24.2.0
python 1.py 385ms 7.0ms 104.8MB 327ms 43ms pypy 3.10.16
python 1.py 3165ms 60ms 37.3MB 3140ms 13ms cpython 3.13.5
python 1.py timeout 0.0ms 48.9MB 4963ms 23ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6.js 456ms 0.7ms 59.0MB 450ms 0ms node 24.2.0
javascript 6.js 599ms 2.6ms 44.9MB 603ms 7ms bun 1.2.17
python 2.py 1361ms 5.0ms 57.9MB 1333ms 10ms pypy 3.10.16
python 1.py 2654ms 8.4ms 58.4MB 2627ms 10ms pypy 3.10.16
python 1.py timeout 0.0ms 9.0MB 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 1.4ms 58.9MB 63ms 10ms node 24.2.0
javascript 6.js 82ms 2.6ms 44.9MB 83ms 10ms bun 1.2.17
python 2.py 180ms 2.2ms 58.2MB 157ms 10ms pypy 3.10.16
python 1.py 306ms 6.8ms 57.2MB 283ms 10ms pypy 3.10.16
python 1.py 943ms 6.5ms 8.3MB 933ms 0ms pyston 3.8.12
python 2.py 1324ms 11ms 8.1MB 1313ms 0ms pyston 3.8.12
python 1.py 2929ms 30ms 9.0MB 2917ms 0ms cpython 3.13.5
python 2.py 2959ms 13ms 9.0MB 2947ms 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 2530ms 12ms 61.9MB 2537ms 10ms node 24.2.0
javascript 1.js 2803ms 2.3ms 82.0MB 2810ms 60ms bun 1.2.17
python 1.py 3187ms 17ms 8.3MB 3173ms 0ms pyston 3.8.12
python 1.py 3532ms 13ms 74.6MB 3497ms 20ms pypy 3.10.16
python 1.py 3783ms 19ms 8.9MB 3770ms 0ms cpython 3.13.5

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 704ms 57ms 60.1MB 707ms 10ms node 24.2.0
javascript 1.js 729ms 4.2ms 81.9MB 727ms 27ms bun 1.2.17
python 1.py 804ms 5.9ms 8.3MB 793ms 0ms pyston 3.8.12
python 1.py 957ms 5.7ms 8.9MB 943ms 0ms cpython 3.13.5
python 1.py 990ms 6.3ms 67.4MB 960ms 17ms pypy 3.10.16

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1919ms 1.6ms 8.9MB 1877ms 27ms pyston 3.8.12
python 4.py 1963ms 11ms 9.5MB 1907ms 40ms cpython 3.13.5
python 4.py 2195ms 8.6ms 89.5MB 2153ms 27ms pypy 3.10.16
javascript 3.js 4612ms 24ms 122.4MB 4567ms 43ms node 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 451ms 1.8ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 466ms 1.8ms 9.4MB 453ms 0ms cpython 3.13.5
python 4.py 552ms 2.6ms 83.9MB 513ms 27ms pypy 3.10.16
javascript 3.js 1016ms 4.2ms 74.0MB 997ms 17ms node 24.2.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2170ms 4.5ms 118.6MB 8280ms 63ms node 24.2.0
python 8.py timeout 0.0ms 14.8MB 40ms 10ms cpython 3.13.5
python 8.py timeout 0.0ms 95.4MB 777ms 80ms pypy 3.10.16
python 8.py timeout 0.0ms 14.2MB 37ms 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 654ms 2.1ms 118.9MB 2317ms 63ms node 24.2.0
python 8.py timeout 0.0ms 14.5MB 47ms 10ms cpython 3.13.5
python 8.py timeout 0.0ms 95.8MB 1297ms 173ms pypy 3.10.16
python 8.py timeout 0.0ms 13.7MB 60ms 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 271ms 4.8ms 115.9MB 830ms 53ms node 24.2.0
python 8-m.py 1962ms 22ms 93.3MB 6350ms 247ms pypy 3.10.16
python 8.py timeout 0.0ms 14.0MB 83ms 20ms cpython 3.13.5
python 8.py timeout 0.0ms 13.1MB 137ms 33ms pyston 3.8.12