Programming Language and compiler
Benchmarks

Nim 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
nim 2.nim 836ms 40ms 34.9MB 817ms 7ms nim 2.2.4
nim 2.nim 971ms 5.9ms 35.2MB 953ms 3ms nim/clang 2.2.4
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

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 77ms 1.2ms 5.5MB 70ms 0ms nim 2.2.4
nim 2.nim 93ms 2.7ms 5.8MB 80ms 0ms nim/clang 2.2.4
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

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
nim 1.nim timeout 0.0ms 575.4MB 2623ms 1900ms nim 2.2.4
nim 1.nim timeout 0.0ms 575.7MB 2560ms 1967ms nim/clang 2.2.4

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
nim 1.nim 4094ms 5.6ms 519.3MB 2117ms 1553ms nim 2.2.4
nim 1.nim 4109ms 27ms 518.7MB 2100ms 1580ms nim/clang 2.2.4

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 188ms 2.8ms 1.5MB 180ms 0ms nim 2.2.4
nim 2.nim 243ms 2.1ms 1.8MB 230ms 0ms nim/clang 2.2.4
nim 1.nim 533ms 0.9ms 1.8MB 453ms 67ms nim/clang 2.2.4
nim 1.nim 557ms 2.9ms 1.5MB 470ms 73ms nim 2.2.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 22ms 0.7ms 1.5MB 10ms 0ms nim 2.2.4
nim 2.nim 27ms 1.0ms 1.8MB 20ms 0ms nim/clang 2.2.4
nim 1.nim 56ms 0.8ms 1.8MB 43ms 0ms nim/clang 2.2.4
nim 1.nim 59ms 1.8ms 1.5MB 40ms 3ms nim 2.2.4

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.0ms 0.0ms 1.6MB 0ms 0ms nim 2.2.4
nim 1.nim 1.1ms 0.0ms 1.9MB 0ms 0ms nim/clang 2.2.4
javascript 1.js 13ms 0.6ms 31.9MB 0ms 0ms bun 1.2.13
javascript 1.js 32ms 0.5ms 50.0MB 16ms 8ms node 24.0.2

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 110ms 1.5ms 1.6MB 100ms 0ms nim/clang 2.2.4
nim 2.nim 114ms 1.4ms 1.4MB 107ms 0ms nim 2.2.4
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
javascript 1.js 825ms 5.5ms 109.9MB 920ms 73ms bun 1.2.13
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 325ms 2.6ms 1.6MB 317ms 0ms nim/clang 2.2.4
nim 2.nim 336ms 4.1ms 1.4MB 327ms 0ms nim 2.2.4
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
javascript 1.js 2389ms 8.5ms 109.5MB 2717ms 163ms bun 1.2.13
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 50ms 1.8ms 1.5MB 40ms 0ms nim/clang 2.2.4
nim 2.nim 52ms 1.0ms 1.3MB 43ms 0ms nim 2.2.4
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
javascript 2.js 361ms 1.8ms 123.9MB 380ms 53ms bun 1.2.13
nim 1.nim 482ms 4.8ms 1.3MB 477ms 0ms nim 2.2.4
nim 1.nim 488ms 14ms 1.5MB 477ms 0ms nim/clang 2.2.4

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 387ms 0.4ms 4.8MB 380ms 0ms nim/clang 2.2.4
nim 1.nim 576ms 1.5ms 4.5MB 563ms 0ms nim 2.2.4

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 19ms 0.5ms 1.9MB 10ms 0ms nim/clang 2.2.4
nim 1.nim 27ms 1.2ms 1.6MB 20ms 0ms nim 2.2.4

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
nim 1.nim 552ms 1.9ms 34.9MB 530ms 7ms nim 2.2.4
javascript 1.js 579ms 3.1ms 229.5MB 577ms 120ms node 24.0.2
nim 1.nim 634ms 34ms 35.2MB 613ms 10ms nim/clang 2.2.4

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
nim 1.nim 120ms 2.4ms 9.6MB 110ms 0ms nim 2.2.4
nim 1.nim 135ms 2.2ms 9.9MB 123ms 0ms nim/clang 2.2.4
javascript 1.js 163ms 3.2ms 100.3MB 160ms 33ms node 24.0.2

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 319ms 1.7ms 1.8MB 310ms 0ms nim 2.2.4
nim 2.nim 340ms 0.5ms 2.0MB 330ms 0ms nim/clang 2.2.4
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

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 35ms 1.0ms 1.8MB 30ms 0ms nim 2.2.4
nim 2.nim 40ms 6.2ms 2.0MB 33ms 0ms nim/clang 2.2.4
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

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 267ms 0.8ms 41.5MB 253ms 0ms nim 2.2.4
nim 1.nim 314ms 3.5ms 41.8MB 303ms 0ms nim/clang 2.2.4

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 1.1ms 11.6MB 40ms 0ms nim 2.2.4
nim 1.nim 63ms 1.6ms 11.8MB 53ms 0ms nim/clang 2.2.4

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1651ms 5.5ms 151.9MB 1620ms 13ms nim/clang 2.2.4
nim 1.nim 1683ms 16ms 152.1MB 1650ms 20ms nim 2.2.4

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 3.4ms 17.6MB 160ms 0ms nim/clang 2.2.4
nim 1.nim 176ms 3.6ms 17.2MB 163ms 0ms nim 2.2.4

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
nim 1.nim 3587ms 2.7ms 1.6MB 3580ms 0ms nim/clang 2.2.4
nim 1.nim 3610ms 12ms 1.4MB 3597ms 0ms nim 2.2.4

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
nim 1.nim 899ms 0.8ms 1.5MB 890ms 0ms nim/clang 2.2.4
nim 1.nim 902ms 1.4ms 1.3MB 893ms 0ms nim 2.2.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 226ms 0.1ms 1.5MB 220ms 0ms nim/clang 2.2.4
nim 1.nim 229ms 1.9ms 1.3MB 220ms 0ms nim 2.2.4
javascript 6-m.js 269ms 2.4ms 112.1MB 823ms 50ms node 24.0.2