Programming Language and compiler
Benchmarks

Javascript VS Nim benchmarks

Current benchmark data was generated on Fri Aug 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
nim 2.nim 685ms 7.3ms 36.3MB 667ms 7ms nim 2.2.4
javascript 1-m.js 924ms 19ms 173.9MB 1400ms 193ms bun 1.2.19
nim 2.nim 978ms 54ms 35.2MB 957ms 3ms nim/clang 2.2.4
javascript 1.js 1057ms 11ms 455.9MB 973ms 230ms node 24.4.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 64ms 2.2ms 6.9MB 53ms 0ms nim 2.2.4
nim 2.nim 93ms 1.9ms 5.8MB 80ms 0ms nim/clang 2.2.4
javascript 1.js 99ms 1.4ms 76.3MB 80ms 23ms bun 1.2.19
javascript 1.js 128ms 0.9ms 81.6MB 127ms 23ms node 24.4.1

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 6.nim 571ms 7.7ms 4.5MB 557ms 0ms nim 2.2.4
nim 6.nim 649ms 37ms 3.3MB 640ms 0ms nim/clang 2.2.4
javascript 1.js 1682ms 32ms 189.9MB 1653ms 93ms node 24.4.1
javascript 1.js 2481ms 58ms 102.1MB 2540ms 57ms bun 1.2.19
nim 5.nim 4637ms 30ms 7.6MB 4613ms 10ms nim 2.2.4
nim 1.nim timeout 0.0ms 575.6MB 2617ms 1907ms nim 2.2.4
nim 3.nim timeout 0.0ms 8.8MB 4987ms 3ms nim 2.2.4
nim 1.nim timeout 0.0ms 575.9MB 2610ms 1913ms nim/clang 2.2.4
nim 3.nim timeout 0.0ms 7.0MB 4983ms 0ms nim/clang 2.2.4
nim 5.nim timeout 0.0ms 5.9MB 4970ms 13ms nim/clang 2.2.4

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 6.nim 38ms 0.7ms 3.3MB 30ms 0ms nim 2.2.4
nim 6.nim 43ms 1.2ms 2.1MB 37ms 0ms nim/clang 2.2.4
javascript 1.js 157ms 2.7ms 75.6MB 147ms 23ms node 24.4.1
javascript 1.js 198ms 3.5ms 86.8MB 240ms 33ms bun 1.2.19
nim 5.nim 273ms 3.3ms 4.0MB 260ms 0ms nim 2.2.4
nim 5.nim 336ms 0.7ms 2.9MB 320ms 0ms nim/clang 2.2.4
nim 3.nim 884ms 14ms 5.3MB 873ms 0ms nim 2.2.4
nim 3.nim 899ms 4.6ms 4.0MB 887ms 0ms nim/clang 2.2.4
nim 1.nim 4094ms 14ms 519.8MB 2130ms 1533ms nim/clang 2.2.4
nim 1.nim 4098ms 7.4ms 519.7MB 2143ms 1530ms nim 2.2.4

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 280ms 5.6ms 67.8MB 290ms 27ms node 24.4.1
javascript 1.js 519ms 4.8ms 74.4MB 497ms 17ms bun 1.2.19

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 125ms 1.2ms 64.0MB 117ms 10ms node 24.4.1
javascript 1.js 508ms 2.5ms 63.9MB 487ms 17ms bun 1.2.19

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.1ms 0.0ms 1.9MB 0ms 0ms nim/clang 2.2.4
nim 1.nim 1.6ms 0.2ms 2.6MB 0ms 0ms nim 2.2.4
javascript 1.js 11ms 0.5ms 30.6MB 0ms 0ms bun 1.2.19
javascript 1.js 32ms 0.3ms 50.7MB 18ms 4ms node 24.4.1

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 261ms 2.3ms 73.4MB 127ms 327ms bun 1.2.19
javascript 1.js 2352ms 141ms 268.4MB 2327ms 1063ms node 24.4.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 95ms 13ms 53.6MB 33ms 80ms bun 1.2.19
javascript 1.js 344ms 5.6ms 85.4MB 330ms 123ms node 24.4.1

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 66ms 1.5ms 61.6MB 40ms 17ms bun 1.2.19
javascript 1.js 104ms 1.5ms 75.6MB 93ms 13ms node 24.4.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 364ms 0.6ms 200.0MB 323ms 80ms bun 1.2.19
javascript 1.js 567ms 5.4ms 255.8MB 577ms 127ms node 24.4.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 104ms 1.0ms 2.6MB 97ms 0ms nim 2.2.4
nim 2.nim 110ms 2.5ms 1.9MB 103ms 0ms nim/clang 2.2.4
javascript 2.js 305ms 1.5ms 65.3MB 297ms 10ms node 24.4.1
javascript 1.js 565ms 1.0ms 63.8MB 550ms 10ms node 24.4.1
javascript 2.js 688ms 2.6ms 121.7MB 750ms 53ms bun 1.2.19
javascript 1.js 855ms 21ms 104.9MB 920ms 103ms bun 1.2.19
nim 1.nim timeout 0.0ms 2.6MB 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 306ms 2.9ms 2.6MB 300ms 0ms nim 2.2.4
nim 2.nim 324ms 3.6ms 1.6MB 313ms 0ms nim/clang 2.2.4
javascript 2.js 833ms 3.5ms 72.3MB 820ms 10ms node 24.4.1
javascript 1.js 1619ms 0.4ms 70.7MB 1597ms 13ms node 24.4.1
javascript 2.js 1924ms 12ms 121.8MB 2100ms 67ms bun 1.2.19
javascript 1.js 2374ms 12ms 104.9MB 2657ms 173ms bun 1.2.19
nim 1.nim timeout 0.0ms 2.6MB 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 45ms 0.1ms 2.6MB 40ms 0ms nim 2.2.4
nim 2.nim 49ms 1.5ms 1.5MB 40ms 0ms nim/clang 2.2.4
javascript 2.js 164ms 1.1ms 59.4MB 153ms 10ms node 24.4.1
javascript 1.js 170ms 5.4ms 60.8MB 153ms 10ms node 24.4.1
javascript 1.js 318ms 2.6ms 129.6MB 357ms 77ms bun 1.2.19
nim 1.nim 364ms 4.5ms 2.6MB 353ms 0ms nim 2.2.4
javascript 2.js 374ms 2.9ms 124.3MB 403ms 53ms bun 1.2.19
nim 1.nim 495ms 19ms 1.5MB 487ms 0ms nim/clang 2.2.4

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 455ms 5.8ms 138.2MB 590ms 110ms bun 1.2.19
nim 1.nim 460ms 6.9ms 36.3MB 443ms 10ms nim 2.2.4
javascript 1.js 563ms 8.0ms 231.0MB 570ms 100ms node 24.4.1
nim 1.nim 629ms 11ms 35.2MB 610ms 3ms nim/clang 2.2.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 95ms 2.9ms 11.0MB 83ms 0ms nim 2.2.4
javascript 1.js 112ms 1.9ms 82.8MB 100ms 33ms bun 1.2.19
nim 1.nim 134ms 0.8ms 9.9MB 123ms 0ms nim/clang 2.2.4
javascript 1.js 157ms 4.3ms 100.8MB 150ms 37ms node 24.4.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 319ms 1.0ms 2.9MB 310ms 0ms nim 2.2.4
nim 2.nim 343ms 2.4ms 2.0MB 333ms 0ms nim/clang 2.2.4
javascript 6.js 460ms 3.5ms 59.2MB 447ms 10ms node 24.4.1
javascript 6.js 596ms 2.0ms 43.5MB 597ms 10ms bun 1.2.19

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 34ms 0.2ms 2.9MB 30ms 0ms nim 2.2.4
nim 2.nim 38ms 1.4ms 2.0MB 30ms 0ms nim/clang 2.2.4
javascript 6.js 79ms 0.9ms 43.5MB 80ms 3ms bun 1.2.19
javascript 6.js 79ms 2.5ms 58.8MB 67ms 7ms node 24.4.1

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2503ms 15ms 61.5MB 2507ms 13ms node 24.4.1
javascript 1.js 2801ms 4.4ms 82.0MB 2817ms 47ms bun 1.2.19

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 674ms 2.9ms 59.6MB 680ms 10ms node 24.4.1
javascript 1.js 741ms 2.7ms 81.0MB 740ms 30ms bun 1.2.19

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 3.js 4600ms 4.2ms 123.2MB 4550ms 50ms node 24.4.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 3.js 1014ms 1.7ms 73.8MB 993ms 17ms node 24.4.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2185ms 26ms 119.6MB 8307ms 67ms node 24.4.1
nim 1.nim 3589ms 0.8ms 1.6MB 3580ms 0ms nim/clang 2.2.4
nim 1.nim 3591ms 1.0ms 2.8MB 3580ms 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 660ms 6.2ms 117.7MB 2340ms 50ms node 24.4.1
nim 1.nim 899ms 0.6ms 1.5MB 890ms 0ms nim/clang 2.2.4
nim 1.nim 901ms 1.3ms 2.6MB 890ms 0ms nim 2.2.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 227ms 0.4ms 1.5MB 220ms 0ms nim/clang 2.2.4
nim 1.nim 228ms 1.2ms 2.6MB 220ms 0ms nim 2.2.4
javascript 6-m.js 273ms 4.5ms 114.4MB 847ms 47ms node 24.4.1