Programming Language and compiler
Benchmarks

Wasm VS Javascript benchmarks

Current benchmark data was generated on Tue Jul 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 998ms 4.7ms 166.9MB 1570ms 240ms bun 1.2.17
javascript 1.js 1086ms 11ms 469.4MB 990ms 243ms node 24.3.0
wasm 5.rs 1766ms 30ms 36.0MB 1747ms 7ms wasmtime 34.0.1
wasm 4.rs 1838ms 15ms 34.0MB 1817ms 10ms wasmtime 34.0.1
wasm 3.rs 1880ms 33ms 50.0MB 1850ms 13ms wasmtime 34.0.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 99ms 2.6ms 77.4MB 80ms 23ms bun 1.2.17
javascript 1.js 131ms 1.8ms 80.9MB 130ms 33ms node 24.3.0
wasm 5.rs 167ms 1.1ms 20.1MB 150ms 0ms wasmtime 34.0.1
wasm 4.rs 174ms 1.7ms 20.0MB 160ms 3ms wasmtime 34.0.1
wasm 3.rs 179ms 2.1ms 22.1MB 163ms 0ms wasmtime 34.0.1

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1111ms 16ms 20.4MB 1100ms 0ms wasmtime 34.0.1
javascript 1.js 1757ms 89ms 189.8MB 1723ms 107ms node 24.3.0
javascript 1.js 2594ms 93ms 107.1MB 2637ms 73ms bun 1.2.17

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 77ms 0.4ms 19.1MB 67ms 0ms wasmtime 34.0.1
javascript 1.js 164ms 4.1ms 75.2MB 150ms 20ms node 24.3.0
javascript 1.js 206ms 4.1ms 89.2MB 253ms 33ms bun 1.2.17

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 276ms 3.2ms 67.8MB 300ms 23ms node 24.3.0
wasm 1.rs 419ms 6.5ms 19.5MB 403ms 0ms wasmtime 34.0.1
javascript 1.js 522ms 4.3ms 76.1MB 493ms 20ms bun 1.2.17

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 113ms 0.1ms 19.0MB 100ms 0ms wasmtime 34.0.1
javascript 1.js 141ms 2.7ms 63.5MB 127ms 23ms node 24.3.0
javascript 1.js 498ms 2.2ms 65.5MB 477ms 13ms bun 1.2.17

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 4201ms 47ms 18.3MB 4190ms 0ms wasmtime 34.0.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 349ms 0.3ms 18.3MB 337ms 0ms wasmtime 34.0.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 235ms 3.7ms 18.2MB 220ms 0ms wasmtime 34.0.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 32ms 1.2ms 18.2MB 20ms 0ms wasmtime 34.0.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 6.7ms 0.5ms 18.3MB 0ms 0ms wasmtime 34.0.1
javascript 1.js 13ms 0.5ms 31.3MB 0ms 0ms bun 1.2.17
javascript 1.js 32ms 0.5ms 50.6MB 18ms 6ms node 24.3.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 90ms 1.3ms 18.5MB 80ms 0ms wasmtime 34.0.1
javascript 2.js 308ms 1.2ms 65.1MB 300ms 10ms node 24.3.0
javascript 1.js 574ms 4.2ms 63.1MB 560ms 10ms node 24.3.0
javascript 2.js 676ms 3.1ms 123.0MB 750ms 50ms bun 1.2.17
javascript 1.js 842ms 16ms 106.1MB 943ms 70ms bun 1.2.17

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 253ms 2.7ms 17.9MB 240ms 0ms wasmtime 34.0.1
javascript 2.js 840ms 2.8ms 71.5MB 827ms 13ms node 24.3.0
javascript 1.js 1632ms 5.6ms 69.8MB 1613ms 17ms node 24.3.0
javascript 2.js 1912ms 1.7ms 123.4MB 2090ms 80ms bun 1.2.17
javascript 1.js 2440ms 16ms 106.0MB 2740ms 170ms bun 1.2.17

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 47ms 1.0ms 17.7MB 33ms 0ms wasmtime 34.0.1
javascript 2.js 164ms 1.8ms 59.0MB 160ms 3ms node 24.3.0
javascript 1.js 171ms 1.6ms 60.4MB 160ms 7ms node 24.3.0
javascript 1.js 328ms 1.8ms 130.1MB 367ms 80ms bun 1.2.17
javascript 2.js 376ms 2.2ms 125.0MB 407ms 53ms bun 1.2.17

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 828ms 2.0ms 21.5MB 817ms 0ms wasmtime 34.0.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 43ms 0.2ms 18.4MB 30ms 0ms wasmtime 34.0.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 483ms 5.4ms 139.7MB 633ms 127ms bun 1.2.17
javascript 1.js 598ms 14ms 230.0MB 600ms 117ms node 24.3.0
wasm 1.rs 886ms 12ms 44.1MB 863ms 10ms wasmtime 34.0.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 120ms 0.5ms 84.5MB 107ms 33ms bun 1.2.17
javascript 1.js 165ms 0.4ms 100.0MB 160ms 33ms node 24.3.0
wasm 1.rs 193ms 1.1ms 24.1MB 177ms 3ms wasmtime 34.0.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 404ms 3.4ms 18.0MB 390ms 0ms wasmtime 34.0.1
javascript 6.js 456ms 3.7ms 58.6MB 447ms 3ms node 24.3.0
wasm 2.rs 562ms 0.4ms 18.3MB 550ms 0ms wasmtime 34.0.1
javascript 6.js 602ms 8.9ms 45.0MB 607ms 3ms bun 1.2.17

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 49ms 1.1ms 18.1MB 37ms 0ms wasmtime 34.0.1
wasm 2.rs 65ms 1.1ms 18.1MB 50ms 0ms wasmtime 34.0.1
javascript 6.js 80ms 0.7ms 58.6MB 67ms 10ms node 24.3.0
javascript 6.js 82ms 1.0ms 45.0MB 87ms 3ms bun 1.2.17

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 391ms 3.6ms 23.0MB 377ms 0ms wasmtime 34.0.1
wasm 1.rs 526ms 14ms 57.2MB 510ms 0ms wasmtime 34.0.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 94ms 2.6ms 27.8MB 80ms 0ms wasmtime 34.0.1
wasm 2.rs 100ms 2.9ms 19.5MB 90ms 0ms wasmtime 34.0.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2137ms 4.5ms 19.2MB 2123ms 0ms wasmtime 34.0.1
javascript 3.js timeout 0.0ms 122.6MB 4957ms 43ms node 24.3.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 509ms 3.9ms 18.3MB 493ms 0ms wasmtime 34.0.1
javascript 3.js 1089ms 1.6ms 73.5MB 1063ms 20ms node 24.3.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2471ms 0.4ms 61.3MB 2477ms 17ms node 24.3.0
javascript 1.js 2830ms 8.0ms 82.4MB 2850ms 53ms bun 1.2.17
wasm 1.rs 3428ms 13ms 17.9MB 3413ms 0ms wasmtime 34.0.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 668ms 7.5ms 60.1MB 673ms 13ms node 24.3.0
javascript 1.js 744ms 7.5ms 81.8MB 747ms 30ms bun 1.2.17
wasm 1.rs 880ms 8.0ms 18.5MB 867ms 0ms wasmtime 34.0.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2192ms 31ms 119.8MB 8330ms 63ms node 24.3.0
wasm 2.rs 3600ms 5.7ms 18.3MB 3587ms 0ms wasmtime 34.0.1
wasm 7.rs 4895ms 4.2ms 18.3MB 4883ms 0ms wasmtime 34.0.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 668ms 9.4ms 118.0MB 2350ms 63ms node 24.3.0
wasm 2.rs 907ms 0.5ms 17.7MB 893ms 0ms wasmtime 34.0.1
wasm 7.rs 1230ms 1.2ms 17.7MB 1220ms 0ms wasmtime 34.0.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 234ms 1.4ms 17.6MB 220ms 0ms wasmtime 34.0.1
javascript 6-m.js 278ms 3.8ms 114.6MB 847ms 60ms node 24.3.0
wasm 7.rs 316ms 0.4ms 18.1MB 303ms 0ms wasmtime 34.0.1