Programming Language and compiler
Benchmarks

Results for 38 of 40 languages from this run on actest1.

Unavailable in this run: Hack, Lisp. Follow the run link for failure details.

Wasm VS Kotlin benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -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
kotlin 1.kt 794ms 80ms 581.9MB 1017ms 130ms kotlin/jvm 21.0.12
wasm 5.rs 2706ms 23ms 31.8MB 2683ms 7ms wasmtime 48.0.2
wasm 4.rs 2716ms 16ms 31.9MB 2693ms 10ms wasmtime 48.0.2
wasm 3.rs 2830ms 30ms 47.9MB 2800ms 13ms wasmtime 48.0.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 188ms 30ms 159.7MB 233ms 30ms kotlin/jvm 21.0.12
wasm 4.rs 256ms 0.8ms 20.1MB 240ms 0ms wasmtime 48.0.2
wasm 5.rs 258ms 2.6ms 18.1MB 240ms 0ms wasmtime 48.0.2
wasm 3.rs 288ms 29ms 20.0MB 270ms 3ms wasmtime 48.0.2

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1617ms 13ms 20.5MB 1603ms 0ms wasmtime 48.0.2
kotlin 2-m.kt 3342ms 283ms 229.6MB 12590ms 123ms kotlin/jvm 21.0.12
kotlin 1.kt 3615ms 290ms 219.6MB 4723ms 107ms kotlin/jvm 21.0.12

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 423ms 73ms 19.6MB 103ms 3ms wasmtime 48.0.2
kotlin 1-m.kt 738ms 7.2ms 77.4MB 1727ms 47ms kotlin/jvm 21.0.12
kotlin 2-m.kt 1625ms 206ms 97.5MB 5807ms 100ms kotlin/jvm 21.0.12

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 547ms 6.8ms 17.7MB 533ms 0ms wasmtime 48.0.2

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 147ms 1.6ms 17.1MB 127ms 7ms wasmtime 48.0.2

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 4252ms 11ms 16.5MB 4240ms 0ms wasmtime 48.0.2

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 365ms 2.9ms 16.8MB 350ms 0ms wasmtime 48.0.2

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 304ms 0.8ms 18.4MB 283ms 7ms wasmtime 48.0.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 39ms 0.7ms 16.6MB 27ms 0ms wasmtime 48.0.2

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 7.3ms 0.6ms 18.9MB 0ms 0ms wasmtime 48.0.2
kotlin 1-m.kt 87ms 4.3ms 46.2MB 136ms 12ms kotlin/jvm 21.0.12

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 132ms 4.4ms 14.8MB 120ms 0ms wasmtime 48.0.2
kotlin 1-m.kt 284ms 4.7ms 95.4MB 503ms 33ms kotlin/jvm 21.0.12
kotlin 2-m.kt 389ms 13ms 99.5MB 863ms 27ms kotlin/jvm 21.0.12

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 382ms 18ms 14.6MB 367ms 0ms wasmtime 48.0.2
kotlin 1-m.kt 482ms 4.8ms 201.4MB 717ms 47ms kotlin/jvm 21.0.12
kotlin 2-m.kt 543ms 5.7ms 209.8MB 993ms 67ms kotlin/jvm 21.0.12

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 76ms 11ms 14.3MB 67ms 0ms wasmtime 48.0.2
kotlin 1-m.kt 255ms 1.9ms 91.1MB 500ms 37ms kotlin/jvm 21.0.12
kotlin 2-m.kt 302ms 15ms 95.4MB 693ms 23ms kotlin/jvm 21.0.12

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 776ms 1.2ms 19.6MB 763ms 0ms wasmtime 48.0.2

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 43ms 1.8ms 16.9MB 30ms 0ms wasmtime 48.0.2

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 641ms 8.2ms 676.7MB 820ms 93ms kotlin/jvm 21.0.12
wasm 1.rs 1381ms 5.3ms 39.9MB 1357ms 7ms wasmtime 48.0.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 250ms 11ms 205.0MB 363ms 67ms kotlin/jvm 21.0.12
wasm 1.rs 292ms 3.2ms 21.8MB 270ms 7ms wasmtime 48.0.2

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 621ms 3.5ms 16.6MB 603ms 0ms wasmtime 48.0.2
wasm 2.rs 622ms 5.9ms 16.5MB 610ms 0ms wasmtime 48.0.2
kotlin 1.kt 884ms 6.3ms 49.9MB 980ms 17ms kotlin/jvm 21.0.12

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 72ms 1.4ms 16.4MB 60ms 0ms wasmtime 48.0.2
wasm 2.rs 74ms 5.5ms 16.7MB 63ms 0ms wasmtime 48.0.2
kotlin 1-m.kt 208ms 14ms 49.7MB 297ms 17ms kotlin/jvm 21.0.12

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 731ms 5.1ms 22.5MB 717ms 0ms wasmtime 48.0.2
wasm 1.rs 1119ms 2.6ms 57.6MB 1100ms 0ms wasmtime 48.0.2

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 151ms 0.5ms 17.2MB 140ms 0ms wasmtime 48.0.2
wasm 1.rs 215ms 1.1ms 27.5MB 197ms 0ms wasmtime 48.0.2

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2611ms 32ms 17.4MB 2593ms 3ms wasmtime 48.0.2
kotlin 1.kt 5427ms 177ms 419.0MB 6873ms 170ms kotlin/jvm 21.0.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 616ms 1.8ms 18.2MB 603ms 0ms wasmtime 48.0.2
kotlin 1-m.kt 1629ms 66ms 362.2MB 3007ms 117ms kotlin/jvm 21.0.12

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 4539ms 54ms 16.7MB 4530ms 0ms wasmtime 48.0.2
kotlin 1.kt 5266ms 83ms 228.7MB 6800ms 87ms kotlin/jvm 21.0.12

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 1152ms 18ms 14.8MB 1140ms 0ms wasmtime 48.0.2
kotlin 1-m.kt 1750ms 44ms 260.1MB 2960ms 50ms kotlin/jvm 21.0.12

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 7.rs 5534ms 4.6ms 16.3MB 5520ms 0ms wasmtime 48.0.2
wasm 2.rs 11040ms 32ms 16.8MB 11030ms 3ms wasmtime 48.0.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 7.rs 1395ms 1.6ms 16.7MB 1383ms 0ms wasmtime 48.0.2
wasm 2.rs 2771ms 8.4ms 16.7MB 2760ms 0ms wasmtime 48.0.2

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 7.rs 358ms 2.2ms 18.7MB 343ms 0ms wasmtime 48.0.2
wasm 2.rs 702ms 1.7ms 14.8MB 690ms 0ms wasmtime 48.0.2