Programming Language and compiler
Benchmarks

Wasm VS OCaml 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
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
ocaml 1.ml 3177ms 13ms 157.2MB 3097ms 63ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
ocaml 1.ml 234ms 3.5ms 19.2MB 217ms 0ms ocaml 5.3.0

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

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

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 419ms 6.5ms 19.5MB 403ms 0ms wasmtime 34.0.1

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

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 2910ms 4.7ms 4.9MB 2900ms 0ms ocaml 5.3.0
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
ocaml 2.ml 245ms 1.0ms 4.9MB 237ms 0ms ocaml 5.3.0
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
ocaml 6.ml 348ms 0.3ms 24.8MB 337ms 0ms ocaml 5.3.0

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
ocaml 6.ml 39ms 0.9ms 7.6MB 30ms 0ms ocaml 5.3.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 1.8ms 0.2ms 5.1MB 0ms 0ms ocaml 5.3.0
wasm 1.rs 6.7ms 0.5ms 18.3MB 0ms 0ms wasmtime 34.0.1

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
ocaml 1.ml 180ms 10ms 6.4MB 170ms 0ms ocaml 5.3.0

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
ocaml 1.ml 537ms 22ms 6.6MB 527ms 0ms ocaml 5.3.0

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
ocaml 1.ml 77ms 0.7ms 5.9MB 70ms 0ms ocaml 5.3.0

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
wasm 1.rs 886ms 12ms 44.1MB 863ms 10ms wasmtime 34.0.1
ocaml 1.ml 1078ms 7.3ms 70.2MB 1040ms 27ms ocaml 5.3.0
ocaml 2.ml 2068ms 16ms 91.7MB 2013ms 40ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 145ms 3.7ms 21.7MB 130ms 0ms ocaml 5.3.0
wasm 1.rs 193ms 1.1ms 24.1MB 177ms 3ms wasmtime 34.0.1
ocaml 2.ml 361ms 9.3ms 27.7MB 340ms 7ms ocaml 5.3.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 375ms 3.2ms 5.3MB 363ms 0ms ocaml 5.3.0
wasm 1.rs 404ms 3.4ms 18.0MB 390ms 0ms wasmtime 34.0.1
wasm 2.rs 562ms 0.4ms 18.3MB 550ms 0ms wasmtime 34.0.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 41ms 1.9ms 5.2MB 33ms 0ms ocaml 5.3.0
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

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
ocaml 1.ml 949ms 8.7ms 543.2MB 887ms 47ms ocaml 5.3.0
ocaml 2.ml 1888ms 14ms 17.7MB 1877ms 0ms ocaml 5.3.0

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
ocaml 1.ml 179ms 2.9ms 142.3MB 157ms 10ms ocaml 5.3.0
ocaml 2.ml 466ms 5.7ms 9.1MB 453ms 0ms ocaml 5.3.0

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

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

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
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
wasm 2.rs 3600ms 5.7ms 18.3MB 3587ms 0ms wasmtime 34.0.1
ocaml 2.ml 4567ms 4.6ms 6.4MB 4553ms 0ms ocaml 5.3.0
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
wasm 2.rs 907ms 0.5ms 17.7MB 893ms 0ms wasmtime 34.0.1
ocaml 2.ml 1145ms 4.4ms 6.1MB 1137ms 0ms ocaml 5.3.0
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
ocaml 2.ml 291ms 2.2ms 5.2MB 283ms 0ms ocaml 5.3.0
wasm 7.rs 316ms 0.4ms 18.1MB 303ms 0ms wasmtime 34.0.1