Programming Language and compiler
Benchmarks

Javascript VS Wasm benchmarks

Current benchmark data was generated on Sun Jun 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 907ms 13ms 181.8MB 1350ms 187ms bun 1.2.15
javascript 1.js 1049ms 5.1ms 469.9MB 970ms 217ms node 24.1.0
wasm 5.rs 1744ms 15ms 33.9MB 1727ms 10ms wasmtime 33.0.0
wasm 3.rs 1791ms 35ms 49.9MB 1760ms 13ms wasmtime 33.0.0
wasm 4.rs 1806ms 5.3ms 33.9MB 1783ms 10ms wasmtime 33.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 100ms 1.6ms 77.6MB 80ms 27ms bun 1.2.15
javascript 1.js 123ms 1.2ms 80.3MB 127ms 20ms node 24.1.0
wasm 5.rs 170ms 3.5ms 20.1MB 160ms 0ms wasmtime 33.0.0
wasm 3.rs 174ms 3.4ms 21.9MB 160ms 0ms wasmtime 33.0.0
wasm 4.rs 195ms 7.7ms 19.9MB 180ms 0ms wasmtime 33.0.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1143ms 6.3ms 20.3MB 1130ms 0ms wasmtime 33.0.0
javascript 1.js 1597ms 7.0ms 189.2MB 1570ms 100ms node 24.1.0
javascript 1.js 2458ms 46ms 104.4MB 2503ms 70ms bun 1.2.15

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 81ms 1.2ms 18.6MB 70ms 0ms wasmtime 33.0.0
javascript 1.js 158ms 0.8ms 74.8MB 143ms 27ms node 24.1.0
javascript 1.js 199ms 1.7ms 87.9MB 237ms 37ms bun 1.2.15

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 278ms 1.0ms 66.7MB 293ms 23ms node 24.1.0
wasm 1.rs 416ms 1.6ms 19.6MB 403ms 0ms wasmtime 33.0.0
javascript 1.js 517ms 2.3ms 76.2MB 493ms 17ms bun 1.2.15

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 114ms 2.6ms 19.0MB 100ms 0ms wasmtime 33.0.0
javascript 1.js 120ms 1.1ms 62.8MB 110ms 13ms node 24.1.0
javascript 1.js 508ms 1.3ms 65.6MB 487ms 20ms bun 1.2.15

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 6.2ms 0.3ms 15.3MB 0ms 0ms wasmtime 33.0.0
javascript 1.js 12ms 0.4ms 31.5MB 0ms 0ms bun 1.2.15
javascript 1.js 30ms 0.6ms 49.8MB 18ms 6ms node 24.1.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 251ms 4.8ms 79.9MB 130ms 317ms bun 1.2.15
javascript 1.js 2719ms 485ms 296.0MB 2637ms 1240ms node 24.1.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 87ms 3.8ms 55.5MB 37ms 67ms bun 1.2.15
javascript 1.js 342ms 4.1ms 84.0MB 330ms 123ms node 24.1.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 71ms 1.1ms 67.8MB 40ms 20ms bun 1.2.15
javascript 1.js 102ms 0.9ms 74.9MB 80ms 20ms node 24.1.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 386ms 2.1ms 235.8MB 333ms 97ms bun 1.2.15
javascript 1.js 575ms 1.9ms 203.2MB 583ms 123ms node 24.1.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 91ms 1.0ms 17.7MB 80ms 0ms wasmtime 33.0.0
javascript 2.js 304ms 2.7ms 64.1MB 293ms 13ms node 24.1.0
javascript 1.js 566ms 6.6ms 62.7MB 553ms 7ms node 24.1.0
javascript 2.js 634ms 5.2ms 123.1MB 710ms 43ms bun 1.2.15
javascript 1.js 830ms 15ms 106.3MB 903ms 87ms bun 1.2.15

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 253ms 2.5ms 17.6MB 240ms 0ms wasmtime 33.0.0
javascript 2.js 833ms 3.9ms 71.4MB 820ms 17ms node 24.1.0
javascript 1.js 1610ms 3.9ms 69.4MB 1593ms 10ms node 24.1.0
javascript 2.js 1783ms 10.0ms 124.1MB 1957ms 77ms bun 1.2.15
javascript 1.js 2362ms 4.9ms 106.4MB 2650ms 160ms bun 1.2.15

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 47ms 0.4ms 17.5MB 37ms 0ms wasmtime 33.0.0
javascript 2.js 164ms 1.8ms 58.7MB 153ms 10ms node 24.1.0
javascript 1.js 167ms 0.2ms 59.9MB 160ms 3ms node 24.1.0
javascript 1.js 318ms 5.1ms 130.3MB 357ms 77ms bun 1.2.15
javascript 2.js 347ms 3.8ms 125.4MB 380ms 47ms bun 1.2.15

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 463ms 1.1ms 136.5MB 613ms 113ms bun 1.2.15
javascript 1.js 558ms 2.7ms 230.3MB 553ms 113ms node 24.1.0
wasm 1.rs 869ms 4.9ms 41.9MB 847ms 10ms wasmtime 33.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 114ms 2.2ms 85.0MB 100ms 30ms bun 1.2.15
javascript 1.js 156ms 1.2ms 100.3MB 150ms 33ms node 24.1.0
wasm 1.rs 193ms 3.5ms 26.0MB 177ms 0ms wasmtime 33.0.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 404ms 2.3ms 18.1MB 390ms 0ms wasmtime 33.0.0
javascript 6.js 456ms 3.2ms 57.9MB 447ms 7ms node 24.1.0
wasm 2.rs 565ms 4.4ms 18.1MB 547ms 0ms wasmtime 33.0.0
javascript 6.js 597ms 2.9ms 45.0MB 600ms 0ms bun 1.2.15

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 48ms 1.3ms 18.1MB 37ms 0ms wasmtime 33.0.0
wasm 2.rs 64ms 1.1ms 18.4MB 50ms 0ms wasmtime 33.0.0
javascript 6.js 78ms 2.2ms 58.2MB 67ms 7ms node 24.1.0
javascript 6.js 80ms 0.6ms 45.0MB 90ms 3ms bun 1.2.15

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2575ms 7.6ms 62.2MB 2580ms 13ms node 24.1.0
javascript 1.js 2822ms 6.0ms 82.3MB 2837ms 43ms bun 1.2.15
wasm 1.rs 3519ms 16ms 17.8MB 3510ms 0ms wasmtime 33.0.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 686ms 6.9ms 58.8MB 690ms 10ms node 24.1.0
javascript 1.js 736ms 1.2ms 82.1MB 730ms 33ms bun 1.2.15
wasm 1.rs 883ms 5.2ms 17.8MB 870ms 0ms wasmtime 33.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2212ms 2.7ms 21.0MB 2197ms 0ms wasmtime 33.0.0
javascript 3.js 4837ms 44ms 121.8MB 4787ms 47ms node 24.1.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 524ms 4.1ms 18.3MB 513ms 0ms wasmtime 33.0.0
javascript 3.js 1043ms 5.1ms 73.1MB 1020ms 17ms node 24.1.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2185ms 14ms 119.3MB 8240ms 53ms node 24.1.0
wasm 2.rs 3597ms 4.4ms 17.7MB 3583ms 0ms wasmtime 33.0.0
wasm 7.rs 4900ms 7.4ms 17.7MB 4887ms 0ms wasmtime 33.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 653ms 1.5ms 117.6MB 2320ms 57ms node 24.1.0
wasm 2.rs 905ms 1.7ms 18.2MB 890ms 0ms wasmtime 33.0.0
wasm 7.rs 1229ms 2.0ms 17.7MB 1217ms 0ms wasmtime 33.0.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 233ms 1.4ms 18.3MB 220ms 0ms wasmtime 33.0.0
javascript 6-m.js 270ms 2.9ms 117.4MB 843ms 47ms node 24.1.0
wasm 7.rs 315ms 1.6ms 17.7MB 300ms 0ms wasmtime 33.0.0