Programming Language and compiler
Benchmarks

Wasm VS Javascript benchmarks

Current benchmark data was generated on Fri Aug 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
javascript 1-m.js 924ms 19ms 173.9MB 1400ms 193ms bun 1.2.19
javascript 1.js 1057ms 11ms 455.9MB 973ms 230ms node 24.4.1
wasm 5.rs 1754ms 5.6ms 33.8MB 1733ms 10ms wasmtime 35.0.0
wasm 3.rs 1818ms 28ms 49.8MB 1783ms 20ms wasmtime 35.0.0
wasm 4.rs 1833ms 6.3ms 33.7MB 1813ms 7ms wasmtime 35.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 99ms 1.4ms 76.3MB 80ms 23ms bun 1.2.19
javascript 1.js 128ms 0.9ms 81.6MB 127ms 23ms node 24.4.1
wasm 5.rs 171ms 2.9ms 19.8MB 160ms 0ms wasmtime 35.0.0
wasm 4.rs 174ms 0.5ms 19.8MB 160ms 0ms wasmtime 35.0.0
wasm 3.rs 181ms 14ms 21.8MB 167ms 0ms wasmtime 35.0.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1118ms 22ms 20.1MB 1100ms 0ms wasmtime 35.0.0
javascript 1.js 1682ms 32ms 189.9MB 1653ms 93ms node 24.4.1
javascript 1.js 2481ms 58ms 102.1MB 2540ms 57ms bun 1.2.19

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 81ms 2.8ms 20.2MB 70ms 0ms wasmtime 35.0.0
javascript 1.js 157ms 2.7ms 75.6MB 147ms 23ms node 24.4.1
javascript 1.js 198ms 3.5ms 86.8MB 240ms 33ms bun 1.2.19

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 280ms 5.6ms 67.8MB 290ms 27ms node 24.4.1
wasm 1.rs 416ms 5.6ms 19.5MB 403ms 0ms wasmtime 35.0.0
javascript 1.js 519ms 4.8ms 74.4MB 497ms 17ms bun 1.2.19

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 112ms 2.4ms 18.7MB 100ms 0ms wasmtime 35.0.0
javascript 1.js 125ms 1.2ms 64.0MB 117ms 10ms node 24.4.1
javascript 1.js 508ms 2.5ms 63.9MB 487ms 17ms bun 1.2.19

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 4146ms 2.1ms 17.3MB 4133ms 0ms wasmtime 35.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 348ms 0.1ms 17.4MB 340ms 0ms wasmtime 35.0.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 220ms 0.6ms 18.0MB 210ms 0ms wasmtime 35.0.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 30ms 0.9ms 18.1MB 20ms 0ms wasmtime 35.0.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 6.4ms 0.3ms 18.0MB 0ms 0ms wasmtime 35.0.0
javascript 1.js 11ms 0.5ms 30.6MB 0ms 0ms bun 1.2.19
javascript 1.js 32ms 0.3ms 50.7MB 18ms 4ms node 24.4.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 93ms 1.9ms 17.6MB 80ms 0ms wasmtime 35.0.0
javascript 2.js 305ms 1.5ms 65.3MB 297ms 10ms node 24.4.1
javascript 1.js 565ms 1.0ms 63.8MB 550ms 10ms node 24.4.1
javascript 2.js 688ms 2.6ms 121.7MB 750ms 53ms bun 1.2.19
javascript 1.js 855ms 21ms 104.9MB 920ms 103ms bun 1.2.19

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 255ms 0.8ms 18.2MB 240ms 0ms wasmtime 35.0.0
javascript 2.js 833ms 3.5ms 72.3MB 820ms 10ms node 24.4.1
javascript 1.js 1619ms 0.4ms 70.7MB 1597ms 13ms node 24.4.1
javascript 2.js 1924ms 12ms 121.8MB 2100ms 67ms bun 1.2.19
javascript 1.js 2374ms 12ms 104.9MB 2657ms 173ms bun 1.2.19

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 47ms 0.2ms 18.2MB 40ms 0ms wasmtime 35.0.0
javascript 2.js 164ms 1.1ms 59.4MB 153ms 10ms node 24.4.1
javascript 1.js 170ms 5.4ms 60.8MB 153ms 10ms node 24.4.1
javascript 1.js 318ms 2.6ms 129.6MB 357ms 77ms bun 1.2.19
javascript 2.js 374ms 2.9ms 124.3MB 403ms 53ms bun 1.2.19

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 817ms 1.4ms 21.1MB 803ms 0ms wasmtime 35.0.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 42ms 1.1ms 18.1MB 30ms 0ms wasmtime 35.0.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 455ms 5.8ms 138.2MB 590ms 110ms bun 1.2.19
javascript 1.js 563ms 8.0ms 231.0MB 570ms 100ms node 24.4.1
wasm 1.rs 880ms 4.4ms 41.7MB 857ms 10ms wasmtime 35.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 112ms 1.9ms 82.8MB 100ms 33ms bun 1.2.19
javascript 1.js 157ms 4.3ms 100.8MB 150ms 37ms node 24.4.1
wasm 1.rs 192ms 0.3ms 24.1MB 180ms 0ms wasmtime 35.0.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 410ms 1.4ms 17.8MB 400ms 0ms wasmtime 35.0.0
javascript 6.js 460ms 3.5ms 59.2MB 447ms 10ms node 24.4.1
wasm 2.rs 565ms 5.2ms 17.9MB 553ms 0ms wasmtime 35.0.0
javascript 6.js 596ms 2.0ms 43.5MB 597ms 10ms bun 1.2.19

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 48ms 0.9ms 17.8MB 40ms 0ms wasmtime 35.0.0
wasm 2.rs 65ms 1.2ms 17.8MB 50ms 0ms wasmtime 35.0.0
javascript 6.js 79ms 0.9ms 43.5MB 80ms 3ms bun 1.2.19
javascript 6.js 79ms 2.5ms 58.8MB 67ms 7ms node 24.4.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 385ms 7.3ms 22.7MB 370ms 0ms wasmtime 35.0.0
wasm 1.rs 450ms 3.8ms 56.9MB 437ms 0ms wasmtime 35.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 92ms 1.1ms 27.5MB 80ms 0ms wasmtime 35.0.0
wasm 2.rs 99ms 0.8ms 19.1MB 90ms 0ms wasmtime 35.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2146ms 21ms 18.8MB 2133ms 0ms wasmtime 35.0.0
javascript 3.js 4600ms 4.2ms 123.2MB 4550ms 50ms node 24.4.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 506ms 2.3ms 18.1MB 490ms 0ms wasmtime 35.0.0
javascript 3.js 1014ms 1.7ms 73.8MB 993ms 17ms node 24.4.1

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2503ms 15ms 61.5MB 2507ms 13ms node 24.4.1
javascript 1.js 2801ms 4.4ms 82.0MB 2817ms 47ms bun 1.2.19
wasm 1.rs 3412ms 3.1ms 17.5MB 3400ms 0ms wasmtime 35.0.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 674ms 2.9ms 59.6MB 680ms 10ms node 24.4.1
javascript 1.js 741ms 2.7ms 81.0MB 740ms 30ms bun 1.2.19
wasm 1.rs 869ms 7.9ms 17.5MB 857ms 0ms wasmtime 35.0.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2185ms 26ms 119.6MB 8307ms 67ms node 24.4.1
wasm 7.rs 3602ms 3.8ms 18.1MB 3590ms 0ms wasmtime 35.0.0
wasm 2.rs 3607ms 9.5ms 17.8MB 3590ms 0ms wasmtime 35.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 660ms 6.2ms 117.7MB 2340ms 50ms node 24.4.1
wasm 2.rs 905ms 0.6ms 17.4MB 890ms 0ms wasmtime 35.0.0
wasm 7.rs 909ms 1.9ms 17.6MB 897ms 0ms wasmtime 35.0.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 7.rs 233ms 1.0ms 17.8MB 220ms 0ms wasmtime 35.0.0
wasm 2.rs 234ms 1.7ms 17.3MB 220ms 0ms wasmtime 35.0.0
javascript 6-m.js 273ms 4.5ms 114.4MB 847ms 47ms node 24.4.1