Programming Language and compiler
Benchmarks

Wasm VS C# 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
csharp 1.cs 948ms 4.4ms 196.3MB 950ms 160ms dotnet 9.0.202
csharp 1.cs 1012ms 10ms 166.5MB 1010ms 130ms dotnet/aot 9.0.202
csharp 1.cs 1761ms 69ms 101.3MB 1963ms 233ms mono 6.12.0
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
csharp 1.cs 133ms 8.6ms 32.6MB 87ms 33ms dotnet/aot 9.0.202
csharp 1.cs 149ms 2.7ms 44.2MB 127ms 10ms mono 6.12.0
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
csharp 1.cs 202ms 7.8ms 51.2MB 160ms 37ms dotnet 9.0.202

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1133ms 6.8ms 19.4MB 1117ms 0ms wasmtime 31.0.0
csharp 1-m.cs 2276ms 132ms 52.0MB 7957ms 63ms dotnet/aot 9.0.202
csharp 1-m.cs 2746ms 47ms 67.1MB 8730ms 100ms dotnet 9.0.202

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 82ms 1.6ms 17.7MB 70ms 0ms wasmtime 31.0.0
csharp 1-m.cs 161ms 21ms 19.1MB 460ms 10ms dotnet/aot 9.0.202
csharp 1-m.cs 311ms 6.5ms 37.2MB 817ms 20ms dotnet 9.0.202

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 421ms 7.8ms 18.6MB 403ms 3ms wasmtime 31.0.0
csharp 1.cs 4092ms 4.1ms 18.5MB 4070ms 10ms dotnet/aot 9.0.202
csharp 1.cs 4965ms 21ms 37.6MB 4930ms 20ms dotnet 9.0.202

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 115ms 2.6ms 18.0MB 103ms 0ms wasmtime 31.0.0
csharp 1.cs 680ms 1.8ms 14.5MB 660ms 3ms dotnet/aot 9.0.202
csharp 1.cs 860ms 2.1ms 33.9MB 840ms 13ms dotnet 9.0.202

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
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
csharp 5-m.cs 128ms 3.9ms 25.0MB 347ms 97ms dotnet/aot 9.0.202
csharp 5-m.cs 194ms 5.8ms 38.8MB 470ms 120ms dotnet 9.0.202
wasm 1.rs 237ms 2.6ms 17.5MB 223ms 3ms wasmtime 31.0.0
csharp 5-m.cs 253ms 7.3ms 45.3MB 683ms 137ms mono 6.12.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 25ms 0.3ms 16.0MB 33ms 13ms dotnet/aot 9.0.202
wasm 1.rs 32ms 0.9ms 17.3MB 20ms 0ms wasmtime 31.0.0
csharp 5-m.cs 63ms 3.1ms 37.1MB 87ms 20ms dotnet 9.0.202
csharp 5-m.cs 73ms 2.6ms 32.0MB 103ms 23ms mono 6.12.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 7.3ms 1.3ms 17.4MB 0ms 0ms wasmtime 31.0.0
csharp 1.cs 10.0ms 3.3ms 9.4MB 0ms 0ms dotnet/aot 9.0.202
csharp 1.cs 31ms 0.8ms 21.3MB 20ms 0ms mono 6.12.0
csharp 1.cs 36ms 0.4ms 26.3MB 20ms 6ms dotnet 9.0.202

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 90ms 0.5ms 17.4MB 80ms 0ms wasmtime 31.0.0
csharp 2.cs 96ms 1.4ms 9.9MB 80ms 0ms dotnet/aot 9.0.202
csharp 2.cs 151ms 1.3ms 21.1MB 137ms 0ms mono 6.12.0
csharp 2.cs 252ms 3.5ms 29.5MB 237ms 10ms dotnet 9.0.202
csharp 1.cs 1047ms 8.8ms 13.1MB 1030ms 3ms dotnet/aot 9.0.202
csharp 1.cs 1338ms 47ms 32.4MB 1330ms 10ms dotnet 9.0.202
csharp 1.cs 3356ms 34ms 45.5MB 3303ms 40ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 255ms 5.4ms 16.9MB 240ms 0ms wasmtime 31.0.0
csharp 2.cs 273ms 2.6ms 9.6MB 260ms 0ms dotnet/aot 9.0.202
csharp 2.cs 361ms 2.6ms 22.6MB 350ms 0ms mono 6.12.0
csharp 2.cs 405ms 5.7ms 29.4MB 390ms 10ms dotnet 9.0.202
csharp 1.cs 3129ms 26ms 13.1MB 3100ms 13ms dotnet/aot 9.0.202
csharp 1.cs 3666ms 77ms 33.0MB 3643ms 20ms dotnet 9.0.202
csharp 1.cs timeout 0.0ms 45.6MB 4947ms 47ms mono 6.12.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 48ms 1.5ms 17.4MB 37ms 0ms wasmtime 31.0.0
csharp 2.cs 54ms 0.1ms 9.8MB 40ms 0ms dotnet/aot 9.0.202
csharp 2.cs 94ms 2.2ms 22.8MB 80ms 0ms mono 6.12.0
csharp 2.cs 167ms 1.7ms 29.3MB 147ms 10ms dotnet 9.0.202
csharp 1.cs 1640ms 13ms 32.5MB 1623ms 10ms dotnet 9.0.202
csharp 1.cs 1819ms 22ms 12.9MB 1797ms 0ms dotnet/aot 9.0.202
csharp 1.cs 1822ms 11ms 28.8MB 1810ms 0ms mono 6.12.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 4.cs 347ms 11ms 37.2MB 320ms 10ms dotnet 9.0.202
csharp 2.cs 601ms 41ms 39.9MB 570ms 20ms dotnet 9.0.202
wasm 8.rs 832ms 8.8ms 20.3MB 817ms 0ms wasmtime 31.0.0
csharp 1.cs 2058ms 25ms 36.4MB 2037ms 10ms dotnet 9.0.202
csharp 3.cs 2353ms 6.9ms 16.4MB 2340ms 0ms dotnet/aot 9.0.202
csharp 3.cs 2450ms 7.4ms 36.5MB 2423ms 10ms dotnet 9.0.202
csharp 1.cs 4007ms 97ms 16.4MB 3990ms 0ms dotnet/aot 9.0.202
csharp 1.cs timeout 0.0ms 23.3MB 4983ms 0ms mono 6.12.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 43ms 1.1ms 17.4MB 30ms 0ms wasmtime 31.0.0
csharp 4.cs 80ms 1.6ms 34.5MB 60ms 10ms dotnet 9.0.202
csharp 3.cs 111ms 2.4ms 13.8MB 97ms 0ms dotnet/aot 9.0.202
csharp 2.cs 116ms 3.7ms 36.6MB 93ms 10ms dotnet 9.0.202
csharp 1.cs 138ms 0.5ms 33.6MB 117ms 10ms dotnet 9.0.202
csharp 3.cs 170ms 1.6ms 33.8MB 147ms 10ms dotnet 9.0.202
csharp 1.cs 176ms 3.6ms 13.5MB 160ms 0ms dotnet/aot 9.0.202
csharp 1.cs 570ms 7.1ms 23.9MB 553ms 0ms mono 6.12.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 566ms 11ms 120.7MB 500ms 93ms dotnet/aot 9.0.202
csharp 1.cs 614ms 8.4ms 150.1MB 553ms 133ms dotnet/aot 9.0.202
csharp 2.cs 668ms 5.9ms 137.7MB 627ms 87ms dotnet 9.0.202
csharp 1.cs 751ms 3.6ms 165.4MB 690ms 133ms dotnet 9.0.202
wasm 1.rs 939ms 69ms 41.1MB 913ms 13ms wasmtime 31.0.0
csharp 1.cs 1334ms 44ms 144.1MB 1567ms 170ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 137ms 4.4ms 58.4MB 100ms 40ms dotnet/aot 9.0.202
csharp 1.cs 159ms 9.7ms 74.8MB 123ms 50ms dotnet/aot 9.0.202
wasm 1.rs 201ms 2.9ms 23.2MB 183ms 0ms wasmtime 31.0.0
csharp 2.cs 256ms 2.1ms 74.6MB 227ms 37ms dotnet 9.0.202
csharp 1.cs 267ms 5.4ms 69.4MB 240ms 33ms mono 6.12.0
csharp 1.cs 281ms 2.4ms 91.4MB 240ms 70ms dotnet 9.0.202

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 363ms 4.2ms 27.6MB 343ms 3ms dotnet 9.0.202
csharp 8.cs 373ms 1.9ms 9.9MB 360ms 0ms dotnet/aot 9.0.202
wasm 1.rs 413ms 2.3ms 17.1MB 400ms 0ms wasmtime 31.0.0
csharp 8.cs 421ms 0.6ms 27.6MB 400ms 10ms dotnet 9.0.202
wasm 2.rs 587ms 3.1ms 17.0MB 573ms 0ms wasmtime 31.0.0
csharp 8.cs 1251ms 3.3ms 22.1MB 1233ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 8.cs 45ms 1.4ms 9.9MB 30ms 0ms dotnet/aot 9.0.202
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
csharp 9.cs 95ms 3.9ms 27.8MB 73ms 10ms dotnet 9.0.202
csharp 8.cs 95ms 0.2ms 27.6MB 77ms 10ms dotnet 9.0.202
csharp 8.cs 165ms 1.8ms 22.4MB 153ms 0ms mono 6.12.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 313ms 13ms 78.8MB 293ms 7ms dotnet/aot 9.0.202
csharp 1.cs 365ms 3.4ms 96.3MB 340ms 17ms dotnet 9.0.202
wasm 2.rs 376ms 5.1ms 22.0MB 360ms 0ms wasmtime 31.0.0
csharp 2.cs 402ms 3.3ms 35.7MB 380ms 10ms dotnet 9.0.202
csharp 2.cs 430ms 1.1ms 17.5MB 413ms 0ms dotnet/aot 9.0.202
wasm 1.rs 510ms 12ms 56.1MB 493ms 0ms wasmtime 31.0.0
csharp 1.cs 559ms 12ms 83.9MB 537ms 10ms mono 6.12.0
csharp 2.cs 1863ms 8.1ms 29.4MB 1847ms 0ms mono 6.12.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 65ms 4.9ms 24.8MB 50ms 0ms dotnet/aot 9.0.202
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
csharp 1.cs 102ms 1.4ms 42.4MB 80ms 10ms dotnet 9.0.202
csharp 2.cs 108ms 1.8ms 11.9MB 93ms 0ms dotnet/aot 9.0.202
csharp 2.cs 129ms 2.3ms 30.0MB 110ms 10ms dotnet 9.0.202
csharp 1.cs 147ms 2.7ms 38.3MB 130ms 3ms mono 6.12.0
csharp 2.cs 486ms 4.8ms 21.1MB 470ms 3ms mono 6.12.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2211ms 7.5ms 18.2MB 2197ms 0ms wasmtime 31.0.0
csharp 1.cs 3238ms 14ms 13.9MB 3137ms 97ms dotnet/aot 9.0.202
csharp 1.cs 3641ms 68ms 38.0MB 3640ms 113ms dotnet 9.0.202

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 531ms 6.4ms 17.6MB 513ms 0ms wasmtime 31.0.0
csharp 1.cs 756ms 7.3ms 13.5MB 720ms 23ms dotnet/aot 9.0.202
csharp 1.cs 998ms 15ms 37.6MB 1087ms 33ms dotnet 9.0.202

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 2839ms 5.3ms 13.1MB 2797ms 33ms dotnet/aot 9.0.202
csharp 1.cs 2979ms 42ms 35.4MB 3047ms 40ms dotnet 9.0.202
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
csharp 1.cs 728ms 13ms 13.0MB 707ms 10ms dotnet/aot 9.0.202
wasm 1.rs 910ms 1.5ms 16.8MB 897ms 0ms wasmtime 31.0.0
csharp 1.cs 999ms 4.6ms 34.1MB 1083ms 20ms dotnet 9.0.202

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1864ms 3.2ms 10.6MB 7257ms 10ms dotnet/aot 9.0.202
csharp 3-m.cs 2008ms 131ms 30.1MB 7223ms 17ms dotnet 9.0.202
wasm 2.rs 3602ms 4.5ms 16.9MB 3587ms 0ms wasmtime 31.0.0
csharp 3-m.cs 4633ms 30ms 24.9MB 17887ms 23ms mono 6.12.0
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
csharp 3-m.cs 477ms 1.9ms 10.3MB 1807ms 3ms dotnet/aot 9.0.202
csharp 3-m.cs 535ms 1.5ms 30.0MB 1870ms 17ms dotnet 9.0.202
wasm 2.rs 910ms 0.9ms 16.7MB 897ms 0ms wasmtime 31.0.0
wasm 7.rs 1240ms 9.5ms 16.9MB 1230ms 0ms wasmtime 31.0.0
csharp 3-m.cs 1312ms 112ms 24.4MB 4640ms 13ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 129ms 1.2ms 10.6MB 447ms 3ms dotnet/aot 9.0.202
csharp 3-m.cs 178ms 1.4ms 28.3MB 507ms 10ms dotnet 9.0.202
wasm 2.rs 235ms 1.1ms 17.2MB 220ms 0ms wasmtime 31.0.0
wasm 7.rs 321ms 11ms 16.8MB 307ms 0ms wasmtime 31.0.0
csharp 3-m.cs 348ms 2.9ms 25.6MB 1167ms 10ms mono 6.12.0