Programming Language and compiler
Benchmarks

Wasm VS Rust benchmarks

Current benchmark data was generated on Thu May 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
rust 4.rs 1262ms 11ms 33.8MB 1240ms 10ms rustc 1.86.0
rust 5.rs 1330ms 3.4ms 33.8MB 1307ms 13ms rustc 1.86.0
rust 3.rs 1471ms 55ms 49.8MB 1440ms 17ms rustc 1.86.0
wasm 5.rs 1774ms 4.7ms 33.7MB 1757ms 7ms wasmtime 32.0.0
wasm 3.rs 1818ms 20ms 49.7MB 1790ms 13ms wasmtime 32.0.0
wasm 4.rs 1821ms 4.3ms 33.8MB 1803ms 7ms wasmtime 32.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 121ms 0.2ms 5.8MB 110ms 0ms rustc 1.86.0
rust 5.rs 128ms 0.5ms 5.8MB 120ms 0ms rustc 1.86.0
rust 3.rs 137ms 9.7ms 7.8MB 123ms 0ms rustc 1.86.0
wasm 5.rs 170ms 2.0ms 19.7MB 160ms 0ms wasmtime 32.0.0
wasm 4.rs 177ms 2.1ms 19.7MB 163ms 0ms wasmtime 32.0.0
wasm 3.rs 180ms 5.3ms 21.7MB 163ms 0ms wasmtime 32.0.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 536ms 39ms 9.1MB 2017ms 67ms rustc 1.86.0
rust 5-m.rs 631ms 109ms 5.8MB 2383ms 60ms rustc 1.86.0
rust 1-m.rs 929ms 2.1ms 7.3MB 3410ms 223ms rustc 1.86.0
rust 3.rs 1120ms 2.0ms 9.3MB 1080ms 27ms rustc 1.86.0
wasm 3.rs 1138ms 15ms 20.2MB 1123ms 0ms wasmtime 32.0.0
rust 4.rs 1843ms 14ms 6.9MB 1833ms 0ms rustc 1.86.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 54ms 1.6ms 3.5MB 163ms 10ms rustc 1.86.0
rust 3-m.rs 57ms 2.5ms 4.3MB 183ms 7ms rustc 1.86.0
rust 3.rs 71ms 1.8ms 4.0MB 60ms 0ms rustc 1.86.0
rust 1-m.rs 72ms 0.4ms 3.5MB 223ms 27ms rustc 1.86.0
wasm 3.rs 82ms 1.1ms 20.2MB 70ms 0ms wasmtime 32.0.0
rust 4.rs 114ms 2.2ms 3.1MB 107ms 0ms rustc 1.86.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 116ms 0.2ms 3.6MB 110ms 0ms rustc 1.86.0
wasm 1.rs 421ms 3.5ms 19.4MB 407ms 0ms wasmtime 32.0.0
rust 2.rs 422ms 2.6ms 3.6MB 410ms 0ms rustc 1.86.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 33ms 1.1ms 2.9MB 27ms 0ms rustc 1.86.0
rust 2.rs 76ms 0.0ms 3.0MB 70ms 0ms rustc 1.86.0
wasm 1.rs 115ms 2.5ms 18.8MB 100ms 0ms wasmtime 32.0.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 410ms 1.6ms 2.0MB 1577ms 0ms rustc 1.86.0
rust 5-m.rs 570ms 3.6ms 2.1MB 2180ms 0ms rustc 1.86.0
rust 2-im.rs 631ms 5.8ms 2.0MB 2437ms 0ms rustc 1.86.0
rust 1-m.rs 973ms 3.3ms 2.1MB 3763ms 0ms rustc 1.86.0
rust 3-i.rs 1500ms 0.7ms 1.9MB 1490ms 0ms rustc 1.86.0
rust 2-i.rs 1768ms 1.0ms 1.8MB 1760ms 0ms rustc 1.86.0
rust 1.rs 2689ms 13ms 1.8MB 2683ms 0ms rustc 1.86.0
wasm 1.rs 4121ms 1.0ms 17.3MB 4110ms 0ms wasmtime 32.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 0.3ms 2.0MB 123ms 0ms rustc 1.86.0
rust 5-m.rs 53ms 0.5ms 2.1MB 170ms 0ms rustc 1.86.0
rust 2-im.rs 59ms 1.0ms 2.1MB 200ms 0ms rustc 1.86.0
rust 1-m.rs 86ms 2.3ms 2.1MB 300ms 0ms rustc 1.86.0
rust 3-i.rs 124ms 0.1ms 1.9MB 120ms 0ms rustc 1.86.0
rust 2-i.rs 150ms 0.3ms 1.8MB 140ms 0ms rustc 1.86.0
rust 1.rs 229ms 0.6ms 1.8MB 220ms 0ms rustc 1.86.0
wasm 1.rs 345ms 2.7ms 17.3MB 333ms 0ms wasmtime 32.0.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 88ms 0.2ms 3.2MB 247ms 0ms rustc 1.86.0
rust 5-m.rs 91ms 1.2ms 3.2MB 273ms 0ms rustc 1.86.0
rust 6.rs 143ms 0.1ms 1.9MB 133ms 0ms rustc 1.86.0
rust 1c.rs 163ms 0.6ms 1.8MB 150ms 0ms rustc 1.86.0
rust 1.rs 194ms 1.0ms 2.0MB 187ms 0ms rustc 1.86.0
wasm 1.rs 236ms 2.0ms 17.9MB 223ms 0ms wasmtime 32.0.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 16ms 0.2ms 3.2MB 30ms 0ms rustc 1.86.0
rust 5c-m.rs 16ms 0.5ms 3.2MB 20ms 0ms rustc 1.86.0
rust 6.rs 17ms 0.2ms 1.9MB 10ms 0ms rustc 1.86.0
rust 1c.rs 19ms 0.2ms 1.9MB 10ms 0ms rustc 1.86.0
rust 1.rs 22ms 0.4ms 1.9MB 10ms 0ms rustc 1.86.0
wasm 1.rs 31ms 1.2ms 17.8MB 20ms 0ms wasmtime 32.0.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1.2ms 0.0ms 1.8MB 0ms 0ms rustc 1.86.0
rust 1.rs 1.5ms 0.3ms 1.8MB 0ms 0ms rustc 1.88.0-nightly
wasm 1.rs 6.4ms 0.3ms 16.1MB 0ms 0ms wasmtime 32.0.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 41ms 7.1ms 1.9MB 33ms 0ms rustc 1.86.0
rust 1.rs 47ms 6.4ms 2.0MB 40ms 0ms rustc 1.86.0
wasm 1.rs 87ms 2.0ms 17.8MB 77ms 0ms wasmtime 32.0.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 136ms 3.5ms 1.8MB 127ms 0ms rustc 1.86.0
rust 1.rs 199ms 9.5ms 1.9MB 190ms 0ms rustc 1.86.0
wasm 1.rs 246ms 2.8ms 17.5MB 233ms 0ms wasmtime 32.0.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 23ms 0.2ms 1.8MB 13ms 0ms rustc 1.86.0
rust 1.rs 30ms 1.2ms 1.8MB 20ms 0ms rustc 1.86.0
wasm 1.rs 46ms 0.8ms 17.7MB 33ms 0ms wasmtime 32.0.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 246ms 0.4ms 4.8MB 233ms 0ms rustc 1.88.0-nightly
rust 8.rs 292ms 2.2ms 4.9MB 283ms 0ms rustc 1.86.0
wasm 8.rs 822ms 2.9ms 20.8MB 807ms 0ms wasmtime 32.0.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 13ms 0.2ms 1.9MB 10ms 0ms rustc 1.88.0-nightly
rust 8.rs 14ms 0.2ms 2.0MB 10ms 0ms rustc 1.86.0
wasm 8.rs 42ms 0.8ms 17.9MB 30ms 0ms wasmtime 32.0.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 700ms 11ms 33.8MB 677ms 7ms rustc 1.86.0
wasm 1.rs 885ms 0.7ms 43.7MB 860ms 10ms wasmtime 32.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 151ms 3.1ms 9.8MB 140ms 0ms rustc 1.86.0
wasm 1.rs 197ms 2.7ms 23.7MB 183ms 0ms wasmtime 32.0.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 166ms 3.7ms 1.9MB 157ms 0ms rustc 1.86.0
rust 1.rs 238ms 0.2ms 1.8MB 230ms 0ms rustc 1.86.0
rust 7-i.rs 239ms 2.5ms 1.8MB 230ms 0ms rustc 1.86.0
rust 3.rs 279ms 1.0ms 1.8MB 270ms 0ms rustc 1.88.0-nightly
rust 2.rs 284ms 1.0ms 1.6MB 273ms 0ms rustc 1.86.0
wasm 1.rs 404ms 2.4ms 17.8MB 393ms 0ms wasmtime 32.0.0
wasm 2.rs 563ms 3.0ms 17.9MB 550ms 0ms wasmtime 32.0.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 18ms 0.1ms 1.8MB 10ms 0ms rustc 1.86.0
rust 1.rs 26ms 0.2ms 1.9MB 20ms 0ms rustc 1.86.0
rust 7-i.rs 26ms 0.1ms 1.9MB 20ms 0ms rustc 1.86.0
rust 3.rs 30ms 0.1ms 1.8MB 20ms 0ms rustc 1.88.0-nightly
rust 2.rs 31ms 0.1ms 1.6MB 20ms 0ms rustc 1.86.0
wasm 1.rs 48ms 1.3ms 19.8MB 40ms 0ms wasmtime 32.0.0
wasm 2.rs 63ms 0.2ms 17.9MB 50ms 0ms wasmtime 32.0.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 324ms 2.1ms 6.6MB 313ms 0ms rustc 1.86.0
rust 1.rs 342ms 6.1ms 40.9MB 327ms 3ms rustc 1.86.0
wasm 2.rs 367ms 10ms 22.7MB 353ms 0ms wasmtime 32.0.0
wasm 1.rs 458ms 4.0ms 56.9MB 443ms 0ms wasmtime 32.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 73ms 3.7ms 11.6MB 63ms 0ms rustc 1.86.0
rust 2.rs 82ms 1.1ms 3.0MB 70ms 0ms rustc 1.86.0
wasm 1.rs 90ms 0.5ms 27.6MB 80ms 0ms wasmtime 32.0.0
wasm 2.rs 95ms 0.6ms 18.9MB 83ms 0ms wasmtime 32.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1506ms 3.3ms 2.7MB 1293ms 193ms rustc 1.86.0
rust 2.rs 1713ms 6.7ms 2.7MB 1627ms 73ms rustc 1.86.0
wasm 2.rs 2190ms 4.4ms 19.1MB 2173ms 0ms wasmtime 32.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 314ms 0.1ms 2.4MB 290ms 10ms rustc 1.86.0
rust 2.rs 383ms 4.0ms 2.4MB 373ms 0ms rustc 1.86.0
wasm 2.rs 519ms 3.4ms 18.1MB 507ms 0ms wasmtime 32.0.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 119ms 2.6ms 1.8MB 110ms 0ms rustc 1.86.0
rust 1.rs 1431ms 8.3ms 1.9MB 1423ms 0ms rustc 1.86.0
wasm 1.rs 3581ms 22ms 17.6MB 3567ms 0ms wasmtime 32.0.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 31ms 0.9ms 1.9MB 20ms 0ms rustc 1.86.0
rust 1.rs 367ms 3.1ms 1.9MB 357ms 0ms rustc 1.86.0
wasm 1.rs 907ms 5.9ms 17.6MB 897ms 0ms wasmtime 32.0.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 492ms 0.2ms 2.5MB 1903ms 3ms rustc 1.88.0-nightly
rust 7-m.rs 501ms 0.3ms 2.1MB 1940ms 0ms rustc 1.86.0
rust 8.rs 992ms 0.2ms 2.5MB 980ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 1958ms 7.1ms 2.3MB 7653ms 3ms rustc 1.86.0
rust 7.rs 2070ms 8.8ms 1.9MB 2060ms 0ms rustc 1.86.0
wasm 2.rs 3694ms 3.7ms 17.6MB 3683ms 0ms wasmtime 32.0.0
rust 2.rs 4205ms 2.7ms 2.0MB 4197ms 0ms rustc 1.86.0
wasm 7.rs 4898ms 2.5ms 18.1MB 4883ms 0ms wasmtime 32.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 127ms 0.7ms 2.3MB 467ms 3ms rustc 1.88.0-nightly
rust 7-m.rs 129ms 0.3ms 2.3MB 477ms 3ms rustc 1.86.0
rust 8.rs 251ms 1.3ms 2.1MB 240ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 492ms 0.4ms 2.3MB 1903ms 3ms rustc 1.86.0
rust 7.rs 517ms 2.2ms 1.9MB 510ms 0ms rustc 1.86.0
wasm 2.rs 934ms 2.7ms 17.7MB 920ms 0ms wasmtime 32.0.0
rust 2.rs 1053ms 0.4ms 2.0MB 1043ms 0ms rustc 1.86.0
wasm 7.rs 1229ms 0.8ms 19.5MB 1217ms 0ms wasmtime 32.0.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 35ms 0.0ms 2.1MB 110ms 0ms rustc 1.88.0-nightly
rust 7-m.rs 36ms 0.1ms 2.1MB 113ms 0ms rustc 1.86.0
rust 8.rs 65ms 0.1ms 2.0MB 60ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 127ms 0.2ms 2.1MB 470ms 0ms rustc 1.86.0
rust 7.rs 133ms 2.9ms 1.8MB 123ms 0ms rustc 1.86.0
wasm 2.rs 239ms 1.7ms 17.4MB 223ms 0ms wasmtime 32.0.0
rust 2.rs 266ms 1.6ms 2.0MB 257ms 0ms rustc 1.86.0
wasm 7.rs 315ms 1.9ms 18.2MB 300ms 0ms wasmtime 32.0.0