Programming Language and compiler
Benchmarks

Wasm VS Rust benchmarks

Current benchmark data was generated on Tue Apr 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 1275ms 2.7ms 33.8MB 1250ms 10ms rustc 1.85.1
rust 5.rs 1350ms 10ms 33.8MB 1330ms 7ms rustc 1.85.1
rust 3.rs 1456ms 37ms 49.8MB 1427ms 20ms rustc 1.85.1
wasm 5.rs 1809ms 60ms 33.1MB 1790ms 7ms wasmtime 31.0.0
wasm 3.rs 1854ms 16ms 49.2MB 1827ms 17ms wasmtime 31.0.0
wasm 4.rs 1863ms 11ms 33.2MB 1840ms 10ms wasmtime 31.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 119ms 2.7ms 5.8MB 110ms 0ms rustc 1.85.1
rust 5.rs 127ms 3.5ms 5.8MB 117ms 0ms rustc 1.85.1
rust 3.rs 143ms 2.0ms 7.8MB 130ms 0ms rustc 1.85.1
wasm 5.rs 174ms 4.1ms 19.3MB 157ms 0ms wasmtime 31.0.0
wasm 3.rs 180ms 2.4ms 21.1MB 163ms 0ms wasmtime 31.0.0
wasm 4.rs 181ms 4.0ms 19.2MB 163ms 0ms wasmtime 31.0.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 515ms 33ms 9.1MB 1920ms 73ms rustc 1.85.1
rust 5-m.rs 705ms 15ms 5.5MB 2663ms 83ms rustc 1.85.1
rust 1-m.rs 972ms 6.4ms 8.5MB 3587ms 207ms rustc 1.85.1
wasm 3.rs 1133ms 6.8ms 19.4MB 1117ms 0ms wasmtime 31.0.0
rust 3.rs 1150ms 20ms 9.3MB 1100ms 37ms rustc 1.85.1
rust 4.rs 1914ms 27ms 7.4MB 1900ms 0ms rustc 1.85.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 52ms 1.0ms 3.4MB 157ms 10ms rustc 1.85.1
rust 3-m.rs 57ms 3.9ms 4.4MB 173ms 13ms rustc 1.85.1
rust 3.rs 73ms 1.3ms 4.0MB 63ms 0ms rustc 1.85.1
rust 1-m.rs 75ms 0.5ms 3.8MB 243ms 17ms rustc 1.85.1
wasm 3.rs 82ms 1.6ms 17.7MB 70ms 0ms wasmtime 31.0.0
rust 4.rs 116ms 2.5ms 3.3MB 107ms 0ms rustc 1.85.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 122ms 2.6ms 3.6MB 110ms 0ms rustc 1.85.1
wasm 1.rs 421ms 7.8ms 18.6MB 403ms 3ms wasmtime 31.0.0
rust 2.rs 422ms 2.5ms 3.6MB 410ms 0ms rustc 1.85.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 34ms 1.7ms 2.9MB 27ms 0ms rustc 1.85.1
rust 2.rs 77ms 0.9ms 3.0MB 70ms 0ms rustc 1.85.1
wasm 1.rs 115ms 2.6ms 18.0MB 103ms 0ms wasmtime 31.0.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 410ms 2.4ms 2.1MB 1577ms 0ms rustc 1.85.1
rust 5-m.rs 571ms 5.2ms 2.0MB 2193ms 0ms rustc 1.85.1
rust 2-im.rs 627ms 5.5ms 2.0MB 2410ms 0ms rustc 1.85.1
rust 1-m.rs 977ms 9.9ms 2.1MB 3773ms 0ms rustc 1.85.1
rust 3-i.rs 1500ms 2.2ms 1.9MB 1490ms 0ms rustc 1.85.1
rust 2-i.rs 1760ms 2.0ms 1.8MB 1750ms 0ms rustc 1.85.1
rust 1.rs 2692ms 5.3ms 1.8MB 2683ms 0ms rustc 1.85.1
wasm 1.rs 4154ms 12ms 16.7MB 4137ms 0ms wasmtime 31.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 0.2ms 2.1MB 123ms 0ms rustc 1.85.1
rust 5-m.rs 55ms 2.1ms 2.0MB 177ms 0ms rustc 1.85.1
rust 2-im.rs 60ms 0.2ms 2.1MB 200ms 0ms rustc 1.85.1
rust 1-m.rs 87ms 1.2ms 2.1MB 310ms 0ms rustc 1.85.1
rust 3-i.rs 126ms 1.6ms 1.9MB 120ms 0ms rustc 1.85.1
rust 2-i.rs 150ms 1.0ms 1.8MB 140ms 0ms rustc 1.85.1
rust 1.rs 229ms 0.4ms 1.8MB 220ms 0ms rustc 1.85.1
wasm 1.rs 353ms 4.0ms 17.2MB 340ms 0ms wasmtime 31.0.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 90ms 0.3ms 3.2MB 263ms 0ms rustc 1.85.1
rust 5-m.rs 95ms 0.8ms 3.2MB 290ms 0ms rustc 1.85.1
rust 6.rs 143ms 0.2ms 1.9MB 133ms 0ms rustc 1.85.1
rust 1c.rs 163ms 1.1ms 1.9MB 153ms 0ms rustc 1.85.1
rust 1.rs 195ms 0.5ms 1.9MB 183ms 0ms rustc 1.85.1
wasm 1.rs 237ms 2.6ms 17.5MB 223ms 3ms wasmtime 31.0.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 16ms 0.3ms 3.2MB 23ms 0ms rustc 1.85.1
rust 5-m.rs 17ms 0.6ms 3.3MB 30ms 0ms rustc 1.85.1
rust 6.rs 17ms 0.8ms 1.9MB 10ms 0ms rustc 1.85.1
rust 1c.rs 19ms 0.1ms 1.9MB 10ms 0ms rustc 1.85.1
rust 1.rs 22ms 0.4ms 1.9MB 10ms 0ms rustc 1.85.1
wasm 1.rs 32ms 0.9ms 17.3MB 20ms 0ms wasmtime 31.0.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1.3ms 0.0ms 1.8MB 0ms 0ms rustc 1.85.1
rust 1.rs 1.4ms 0.1ms 1.8MB 0ms 0ms rustc 1.88.0-nightly
wasm 1.rs 7.3ms 1.3ms 17.4MB 0ms 0ms wasmtime 31.0.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 39ms 9.6ms 1.8MB 30ms 0ms rustc 1.85.1
rust 1.rs 47ms 2.9ms 2.0MB 40ms 0ms rustc 1.85.1
wasm 1.rs 90ms 0.5ms 17.4MB 80ms 0ms wasmtime 31.0.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 155ms 14ms 1.9MB 147ms 0ms rustc 1.85.1
rust 1.rs 187ms 18ms 2.0MB 180ms 0ms rustc 1.85.1
wasm 1.rs 255ms 5.4ms 16.9MB 240ms 0ms wasmtime 31.0.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 22ms 0.3ms 1.8MB 13ms 0ms rustc 1.85.1
rust 1.rs 30ms 0.7ms 1.9MB 20ms 0ms rustc 1.85.1
wasm 1.rs 48ms 1.5ms 17.4MB 37ms 0ms wasmtime 31.0.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 248ms 2.0ms 4.8MB 240ms 0ms rustc 1.88.0-nightly
rust 8.rs 308ms 0.6ms 4.8MB 300ms 0ms rustc 1.85.1
wasm 8.rs 832ms 8.8ms 20.3MB 817ms 0ms wasmtime 31.0.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 14ms 1.4ms 1.8MB 10ms 0ms rustc 1.88.0-nightly
rust 8.rs 15ms 0.2ms 1.9MB 10ms 0ms rustc 1.85.1
wasm 8.rs 43ms 1.1ms 17.4MB 30ms 0ms wasmtime 31.0.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 763ms 45ms 33.8MB 737ms 10ms rustc 1.85.1
wasm 1.rs 939ms 69ms 41.1MB 913ms 13ms wasmtime 31.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 153ms 2.9ms 9.8MB 143ms 0ms rustc 1.85.1
wasm 1.rs 201ms 2.9ms 23.2MB 183ms 0ms wasmtime 31.0.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 165ms 3.6ms 1.9MB 157ms 0ms rustc 1.85.1
rust 7-i.rs 237ms 0.6ms 1.8MB 230ms 0ms rustc 1.85.1
rust 1.rs 240ms 0.7ms 1.8MB 230ms 0ms rustc 1.85.1
rust 3.rs 279ms 0.5ms 1.8MB 270ms 0ms rustc 1.88.0-nightly
rust 2.rs 279ms 0.8ms 1.8MB 270ms 0ms rustc 1.85.1
wasm 1.rs 413ms 2.3ms 17.1MB 400ms 0ms wasmtime 31.0.0
wasm 2.rs 587ms 3.1ms 17.0MB 573ms 0ms wasmtime 31.0.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 18ms 0.1ms 1.9MB 10ms 0ms rustc 1.85.1
rust 7-i.rs 26ms 0.5ms 1.9MB 20ms 0ms rustc 1.85.1
rust 1.rs 26ms 0.4ms 1.9MB 20ms 0ms rustc 1.85.1
rust 3.rs 30ms 0.0ms 1.8MB 20ms 0ms rustc 1.88.0-nightly
rust 2.rs 30ms 0.8ms 1.8MB 20ms 0ms rustc 1.85.1
wasm 1.rs 50ms 1.6ms 17.1MB 37ms 0ms wasmtime 31.0.0
wasm 2.rs 67ms 0.7ms 17.4MB 53ms 0ms wasmtime 31.0.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 311ms 3.9ms 40.9MB 297ms 0ms rustc 1.85.1
rust 2.rs 315ms 2.5ms 6.6MB 303ms 0ms rustc 1.85.1
wasm 2.rs 376ms 5.1ms 22.0MB 360ms 0ms wasmtime 31.0.0
wasm 1.rs 510ms 12ms 56.1MB 493ms 0ms wasmtime 31.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 63ms 2.3ms 11.6MB 53ms 0ms rustc 1.85.1
rust 2.rs 77ms 0.9ms 2.9MB 70ms 0ms rustc 1.85.1
wasm 1.rs 99ms 4.3ms 27.0MB 83ms 0ms wasmtime 31.0.0
wasm 2.rs 100ms 2.4ms 18.4MB 83ms 7ms wasmtime 31.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1524ms 4.2ms 2.7MB 1303ms 203ms rustc 1.85.1
rust 2.rs 1708ms 4.8ms 2.6MB 1630ms 67ms rustc 1.85.1
wasm 2.rs 2211ms 7.5ms 18.2MB 2197ms 0ms wasmtime 31.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 324ms 4.6ms 2.4MB 297ms 13ms rustc 1.85.1
rust 2.rs 383ms 6.3ms 2.4MB 373ms 0ms rustc 1.85.1
wasm 2.rs 531ms 6.4ms 17.6MB 513ms 0ms wasmtime 31.0.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 120ms 2.0ms 1.9MB 110ms 0ms rustc 1.85.1
rust 1.rs 1453ms 31ms 1.9MB 1443ms 0ms rustc 1.85.1
wasm 1.rs 3610ms 3.0ms 16.9MB 3597ms 0ms wasmtime 31.0.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 33ms 1.0ms 1.8MB 23ms 0ms rustc 1.85.1
rust 1.rs 365ms 3.7ms 1.9MB 357ms 0ms rustc 1.85.1
wasm 1.rs 910ms 1.5ms 16.8MB 897ms 0ms wasmtime 31.0.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 494ms 0.5ms 2.6MB 1913ms 0ms rustc 1.88.0-nightly
rust 7-m.rs 501ms 0.3ms 2.3MB 1940ms 3ms rustc 1.85.1
rust 8.rs 996ms 1.9ms 2.5MB 987ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 1955ms 1.5ms 2.4MB 7683ms 10ms rustc 1.85.1
rust 7.rs 2107ms 4.3ms 2.0MB 2100ms 0ms rustc 1.85.1
wasm 2.rs 3602ms 4.5ms 16.9MB 3587ms 0ms wasmtime 31.0.0
rust 2.rs 4218ms 10.0ms 2.0MB 4207ms 0ms rustc 1.85.1
wasm 7.rs 4912ms 16ms 16.9MB 4897ms 0ms wasmtime 31.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 128ms 0.2ms 2.4MB 470ms 0ms rustc 1.88.0-nightly
rust 7-m.rs 131ms 1.8ms 2.1MB 477ms 0ms rustc 1.85.1
rust 8.rs 251ms 2.0ms 2.1MB 240ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 493ms 0.3ms 2.1MB 1907ms 0ms rustc 1.85.1
rust 7.rs 531ms 2.8ms 1.8MB 520ms 0ms rustc 1.85.1
wasm 2.rs 910ms 0.9ms 16.7MB 897ms 0ms wasmtime 31.0.0
rust 2.rs 1054ms 2.3ms 1.9MB 1043ms 0ms rustc 1.85.1
wasm 7.rs 1240ms 9.5ms 16.9MB 1230ms 0ms wasmtime 31.0.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 35ms 0.1ms 2.1MB 107ms 3ms rustc 1.88.0-nightly
rust 7-m.rs 36ms 0.2ms 2.1MB 110ms 0ms rustc 1.85.1
rust 8.rs 64ms 0.0ms 2.0MB 60ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 127ms 0.2ms 2.1MB 467ms 3ms rustc 1.85.1
rust 7.rs 138ms 1.1ms 1.9MB 130ms 0ms rustc 1.85.1
wasm 2.rs 235ms 1.1ms 17.2MB 220ms 0ms wasmtime 31.0.0
rust 2.rs 266ms 1.3ms 1.9MB 260ms 0ms rustc 1.85.1
wasm 7.rs 321ms 11ms 16.8MB 307ms 0ms wasmtime 31.0.0