Programming Language and compiler
Benchmarks

Wasm VS Dart benchmarks

Current benchmark data was generated on Mon Jun 23 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
dart 1.dart 728ms 5.9ms 81.0MB 700ms 33ms dart/exe 3.8.1
wasm 5.rs 1914ms 16ms 35.7MB 1893ms 10ms wasmtime 34.0.0
wasm 4.rs 1932ms 53ms 33.7MB 1910ms 10ms wasmtime 34.0.0
wasm 3.rs 1979ms 111ms 50.0MB 1950ms 20ms wasmtime 34.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 77ms 1.2ms 42.9MB 53ms 17ms dart/exe 3.8.1
wasm 5.rs 172ms 1.4ms 19.8MB 157ms 0ms wasmtime 34.0.0
wasm 4.rs 174ms 2.0ms 19.8MB 163ms 0ms wasmtime 34.0.0
wasm 3.rs 181ms 4.1ms 21.7MB 163ms 0ms wasmtime 34.0.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1130ms 4.9ms 20.1MB 1113ms 7ms wasmtime 34.0.0
dart 1.dart 4903ms 31ms 19.4MB 5353ms 77ms dart/exe 3.8.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 80ms 1.0ms 18.6MB 70ms 0ms wasmtime 34.0.0
dart 1.dart 341ms 6.6ms 10.4MB 347ms 10ms dart/exe 3.8.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 418ms 0.4ms 19.3MB 403ms 0ms wasmtime 34.0.0
dart 1.dart 3601ms 12ms 18.0MB 3563ms 27ms dart/exe 3.8.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 116ms 0.9ms 18.8MB 103ms 0ms wasmtime 34.0.0
dart 1.dart 584ms 7.1ms 10.5MB 560ms 13ms dart/exe 3.8.1

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 2674ms 11ms 6.1MB 2667ms 0ms dart/exe 3.8.1
wasm 1.rs 4068ms 6.6ms 17.6MB 4053ms 0ms wasmtime 34.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 221ms 2.0ms 6.3MB 210ms 0ms dart/exe 3.8.1
wasm 1.rs 348ms 3.7ms 17.6MB 337ms 0ms wasmtime 34.0.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 234ms 1.9ms 19.6MB 220ms 0ms wasmtime 34.0.0
dart 1.dart 363ms 3.2ms 8.8MB 353ms 0ms dart/exe 3.8.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 32ms 0.8ms 17.7MB 20ms 0ms wasmtime 34.0.0
dart 1.dart 43ms 0.9ms 8.8MB 30ms 0ms dart/exe 3.8.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 3.5ms 0.2ms 5.7MB 0ms 0ms dart/exe 3.8.1
wasm 1.rs 7.1ms 0.1ms 16.7MB 0ms 0ms wasmtime 34.0.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 93ms 2.2ms 18.2MB 80ms 0ms wasmtime 34.0.0
dart 2.dart 167ms 3.6ms 9.1MB 157ms 0ms dart/exe 3.8.1
dart 1.dart 572ms 8.2ms 8.8MB 560ms 0ms dart/exe 3.8.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 255ms 1.5ms 17.7MB 240ms 0ms wasmtime 34.0.0
dart 2.dart 484ms 10.0ms 9.1MB 473ms 0ms dart/exe 3.8.1
dart 1.dart 1698ms 12ms 9.3MB 1683ms 7ms dart/exe 3.8.1

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 48ms 0.7ms 17.9MB 40ms 0ms wasmtime 34.0.0
dart 2.dart 80ms 1.1ms 9.1MB 70ms 0ms dart/exe 3.8.1
dart 1.dart 119ms 0.3ms 9.1MB 110ms 0ms dart/exe 3.8.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 832ms 1.4ms 21.1MB 820ms 0ms wasmtime 34.0.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 44ms 1.0ms 18.2MB 30ms 0ms wasmtime 34.0.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 331ms 1.4ms 63.8MB 307ms 27ms dart/exe 3.8.1
wasm 1.rs 903ms 21ms 41.8MB 877ms 10ms wasmtime 34.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 87ms 0.6ms 43.8MB 60ms 17ms dart/exe 3.8.1
wasm 1.rs 196ms 4.9ms 23.8MB 180ms 0ms wasmtime 34.0.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 404ms 1.2ms 17.7MB 390ms 0ms wasmtime 34.0.0
dart 3.dart 407ms 1.9ms 6.3MB 400ms 0ms dart/exe 3.8.1
wasm 2.rs 562ms 1.1ms 17.8MB 550ms 0ms wasmtime 34.0.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3.dart 45ms 0.9ms 6.3MB 40ms 0ms dart/exe 3.8.1
wasm 1.rs 49ms 0.5ms 17.9MB 37ms 0ms wasmtime 34.0.0
wasm 2.rs 66ms 1.6ms 18.0MB 50ms 0ms wasmtime 34.0.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 381ms 1.9ms 22.9MB 367ms 0ms wasmtime 34.0.0
wasm 1.rs 613ms 42ms 56.9MB 597ms 10ms wasmtime 34.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 95ms 0.7ms 27.6MB 80ms 0ms wasmtime 34.0.0
wasm 2.rs 98ms 1.0ms 20.9MB 87ms 0ms wasmtime 34.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 1248ms 6.4ms 14.8MB 1220ms 33ms dart/exe 3.8.1
wasm 2.rs 2220ms 15ms 18.7MB 2203ms 0ms wasmtime 34.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 308ms 2.5ms 14.6MB 290ms 10ms dart/exe 3.8.1
wasm 2.rs 523ms 2.7ms 18.4MB 510ms 0ms wasmtime 34.0.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 3588ms 10ms 17.7MB 3573ms 0ms wasmtime 34.0.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 900ms 5.2ms 18.0MB 887ms 0ms wasmtime 34.0.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 3609ms 13ms 17.7MB 3590ms 0ms wasmtime 34.0.0
dart 1.dart 3762ms 11ms 6.4MB 3750ms 0ms dart/exe 3.8.1
wasm 7.rs 4900ms 13ms 17.7MB 4887ms 0ms wasmtime 34.0.0
dart 2.dart 4940ms 8.4ms 6.4MB 4930ms 0ms dart/exe 3.8.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 908ms 2.9ms 19.5MB 893ms 0ms wasmtime 34.0.0
dart 1.dart 945ms 7.6ms 6.3MB 933ms 0ms dart/exe 3.8.1
wasm 7.rs 1231ms 2.5ms 18.1MB 1220ms 0ms wasmtime 34.0.0
dart 2.dart 1239ms 3.2ms 6.1MB 1227ms 0ms dart/exe 3.8.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 234ms 0.4ms 17.8MB 220ms 0ms wasmtime 34.0.0
dart 1.dart 239ms 0.0ms 6.1MB 230ms 0ms dart/exe 3.8.1
wasm 7.rs 316ms 2.7ms 17.4MB 300ms 0ms wasmtime 34.0.0
dart 2.dart 320ms 8.4ms 6.3MB 310ms 0ms dart/exe 3.8.1