Programming Language and compiler
Benchmarks

Javascript VS Wasm benchmarks

Current benchmark data was generated on Tue Mar 25 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 977ms 25ms 178.7MB 1493ms 240ms bun 1.2.6
javascript 1-m.js 1281ms 9.6ms 272.7MB 2213ms 177ms node 23.10.0
wasm 5.rs 1828ms 60ms 33.1MB 1810ms 10ms wasmtime 31.0.0
wasm 4.rs 1855ms 21ms 33.1MB 1833ms 10ms wasmtime 31.0.0
wasm 3.rs 1870ms 21ms 49.2MB 1847ms 10ms wasmtime 31.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 104ms 4.1ms 79.9MB 83ms 27ms bun 1.2.6
javascript 1.js 129ms 2.8ms 78.7MB 133ms 20ms node 23.10.0
wasm 5.rs 171ms 2.0ms 19.2MB 160ms 0ms wasmtime 31.0.0
wasm 4.rs 179ms 1.6ms 19.2MB 167ms 0ms wasmtime 31.0.0
wasm 3.rs 187ms 5.5ms 21.1MB 167ms 0ms wasmtime 31.0.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1202ms 100ms 19.4MB 1187ms 0ms wasmtime 31.0.0
javascript 1.js 1632ms 8.2ms 90.4MB 1723ms 60ms node 23.10.0
javascript 1.js 2522ms 17ms 103.0MB 2550ms 60ms bun 1.2.6

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 87ms 4.6ms 18.0MB 73ms 0ms wasmtime 31.0.0
javascript 1.js 162ms 1.1ms 72.0MB 147ms 23ms node 23.10.0
javascript 1.js 198ms 4.2ms 87.2MB 220ms 27ms bun 1.2.6

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 274ms 1.8ms 62.8MB 290ms 23ms node 23.10.0
wasm 1.rs 425ms 3.8ms 18.6MB 410ms 0ms wasmtime 31.0.0
javascript 1.js 530ms 5.1ms 77.9MB 497ms 27ms bun 1.2.6

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 113ms 2.1ms 18.1MB 100ms 0ms wasmtime 31.0.0
javascript 1.js 129ms 1.3ms 62.0MB 150ms 20ms node 23.10.0
javascript 1.js 503ms 3.1ms 67.9MB 473ms 20ms bun 1.2.6

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 7.0ms 0.7ms 17.4MB 0ms 0ms wasmtime 31.0.0
javascript 1.js 13ms 0.4ms 32.9MB 0ms 0ms bun 1.2.6
javascript 1.js 32ms 0.2ms 48.1MB 18ms 4ms node 23.10.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 345ms 15ms 75.8MB 163ms 430ms bun 1.2.6
javascript 1.js 3563ms 116ms 194.0MB 3377ms 1677ms node 23.10.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 120ms 14ms 55.4MB 37ms 100ms bun 1.2.6
javascript 1.js 372ms 3.7ms 80.4MB 350ms 130ms node 23.10.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 77ms 0.6ms 71.4MB 50ms 20ms bun 1.2.6
javascript 1.js 114ms 0.6ms 75.8MB 100ms 20ms node 23.10.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 420ms 4.8ms 268.4MB 340ms 120ms bun 1.2.6
javascript 1.js 695ms 5.1ms 199.1MB 807ms 83ms node 23.10.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 89ms 1.7ms 17.3MB 80ms 0ms wasmtime 31.0.0
javascript 2.js 315ms 2.2ms 62.6MB 307ms 13ms node 23.10.0
javascript 1.js 565ms 4.9ms 60.8MB 543ms 13ms node 23.10.0
javascript 2.js 669ms 4.6ms 122.7MB 723ms 60ms bun 1.2.6
javascript 1.js 839ms 6.5ms 111.5MB 937ms 80ms bun 1.2.6

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 251ms 3.2ms 16.9MB 240ms 0ms wasmtime 31.0.0
javascript 2.js 858ms 3.1ms 69.0MB 843ms 20ms node 23.10.0
javascript 1.js 1605ms 6.6ms 67.4MB 1587ms 17ms node 23.10.0
javascript 2.js 1868ms 19ms 122.7MB 2037ms 87ms bun 1.2.6
javascript 1.js 2390ms 15ms 111.9MB 2710ms 157ms bun 1.2.6

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 48ms 0.2ms 16.8MB 40ms 0ms wasmtime 31.0.0
javascript 1.js 166ms 0.5ms 58.4MB 153ms 7ms node 23.10.0
javascript 2.js 168ms 0.8ms 57.3MB 160ms 10ms node 23.10.0
javascript 1.js 325ms 1.7ms 115.4MB 360ms 77ms bun 1.2.6
javascript 2.js 361ms 4.4ms 126.3MB 383ms 47ms bun 1.2.6

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 493ms 5.5ms 143.4MB 640ms 137ms bun 1.2.6
javascript 1.js 552ms 10ms 130.6MB 640ms 70ms node 23.10.0
wasm 1.rs 906ms 18ms 41.1MB 880ms 10ms wasmtime 31.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 120ms 0.9ms 87.8MB 107ms 33ms bun 1.2.6
javascript 1.js 165ms 1.9ms 98.3MB 163ms 37ms node 23.10.0
wasm 1.rs 198ms 6.2ms 23.1MB 180ms 0ms wasmtime 31.0.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 411ms 4.6ms 17.1MB 400ms 0ms wasmtime 31.0.0
javascript 6.js 459ms 1.2ms 56.0MB 443ms 10ms node 23.10.0
wasm 2.rs 583ms 2.7ms 17.0MB 570ms 0ms wasmtime 31.0.0
javascript 6.js 798ms 23ms 46.0MB 793ms 7ms bun 1.2.6

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 49ms 0.3ms 17.2MB 37ms 0ms wasmtime 31.0.0
wasm 2.rs 66ms 0.5ms 17.0MB 53ms 0ms wasmtime 31.0.0
javascript 6.js 79ms 0.5ms 56.1MB 67ms 7ms node 23.10.0
javascript 6.js 101ms 1.0ms 45.9MB 97ms 10ms bun 1.2.6

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2652ms 192ms 60.1MB 2667ms 17ms node 23.10.0
javascript 1.js 2813ms 1.1ms 84.6MB 2820ms 60ms bun 1.2.6
wasm 1.rs 3547ms 5.6ms 16.9MB 3533ms 0ms wasmtime 31.0.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 674ms 3.3ms 57.0MB 683ms 17ms node 23.10.0
javascript 1.js 742ms 8.0ms 84.3MB 747ms 33ms bun 1.2.6
wasm 1.rs 896ms 1.8ms 17.3MB 880ms 0ms wasmtime 31.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2227ms 21ms 18.3MB 2210ms 0ms wasmtime 31.0.0
javascript 3.js timeout 0.0ms 88.3MB 4987ms 23ms node 23.10.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 520ms 1.0ms 17.3MB 507ms 0ms wasmtime 31.0.0
javascript 3.js 1114ms 1.8ms 70.8MB 1097ms 17ms node 23.10.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2183ms 18ms 114.0MB 8280ms 57ms node 23.10.0
wasm 2.rs 3604ms 8.1ms 16.9MB 3590ms 0ms wasmtime 31.0.0
wasm 7.rs 4908ms 6.3ms 17.4MB 4897ms 0ms wasmtime 31.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 654ms 3.0ms 114.4MB 2323ms 53ms node 23.10.0
wasm 2.rs 907ms 1.1ms 16.7MB 893ms 0ms wasmtime 31.0.0
wasm 7.rs 1232ms 0.2ms 16.9MB 1220ms 0ms wasmtime 31.0.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 235ms 0.3ms 17.0MB 220ms 0ms wasmtime 31.0.0
javascript 6-m.js 278ms 5.0ms 111.3MB 840ms 50ms node 23.10.0
wasm 7.rs 316ms 1.5ms 16.7MB 300ms 0ms wasmtime 31.0.0