Programming Language and compiler
Benchmarks

Wasm VS C# benchmarks

Current benchmark data was generated on Mon May 19 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 937ms 10ms 185.4MB 937ms 137ms dotnet 9.0.300
csharp 1.cs 1089ms 203ms 175.6MB 1003ms 140ms dotnet/aot 9.0.300
csharp 1.cs 1663ms 38ms 98.4MB 1863ms 183ms mono 6.12.0
wasm 4.rs 1799ms 13ms 33.8MB 1780ms 10ms wasmtime 32.0.0
wasm 5.rs 1807ms 26ms 33.8MB 1787ms 3ms wasmtime 32.0.0
wasm 3.rs 1837ms 50ms 49.8MB 1807ms 17ms wasmtime 32.0.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 142ms 2.5ms 44.0MB 123ms 10ms mono 6.12.0
csharp 1.cs 161ms 19ms 31.8MB 100ms 30ms dotnet/aot 9.0.300
wasm 5.rs 170ms 0.4ms 19.8MB 157ms 0ms wasmtime 32.0.0
wasm 3.rs 172ms 3.8ms 21.7MB 160ms 0ms wasmtime 32.0.0
wasm 4.rs 172ms 1.7ms 19.7MB 160ms 0ms wasmtime 32.0.0
csharp 1.cs 203ms 9.4ms 50.0MB 160ms 37ms dotnet 9.0.300

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1141ms 15ms 20.2MB 1127ms 0ms wasmtime 32.0.0
csharp 1-m.cs 2148ms 121ms 48.9MB 7577ms 67ms dotnet/aot 9.0.300
csharp 1-m.cs 2876ms 225ms 73.0MB 9937ms 117ms dotnet 9.0.300

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 83ms 1.7ms 18.3MB 70ms 0ms wasmtime 32.0.0
csharp 1-m.cs 149ms 3.9ms 20.9MB 447ms 10ms dotnet/aot 9.0.300
csharp 1-m.cs 298ms 11ms 37.4MB 860ms 23ms dotnet 9.0.300

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 420ms 2.0ms 19.4MB 407ms 0ms wasmtime 32.0.0
csharp 1.cs 4097ms 4.2ms 18.3MB 4073ms 10ms dotnet/aot 9.0.300
csharp 1.cs 4958ms 17ms 37.6MB 4930ms 20ms dotnet 9.0.300

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 114ms 1.7ms 19.0MB 100ms 0ms wasmtime 32.0.0
csharp 1.cs 679ms 2.3ms 14.5MB 660ms 7ms dotnet/aot 9.0.300
csharp 1.cs 869ms 4.4ms 33.8MB 847ms 10ms dotnet 9.0.300

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 4187ms 38ms 17.3MB 4177ms 0ms wasmtime 32.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 350ms 1.9ms 19.2MB 340ms 0ms wasmtime 32.0.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 130ms 1.4ms 25.4MB 353ms 97ms dotnet/aot 9.0.300
csharp 5-m.cs 190ms 8.2ms 39.0MB 473ms 110ms dotnet 9.0.300
wasm 1.rs 234ms 2.0ms 17.9MB 220ms 0ms wasmtime 32.0.0
csharp 5-m.cs 239ms 13ms 49.4MB 680ms 103ms 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 1.5ms 16.1MB 33ms 17ms dotnet/aot 9.0.300
wasm 1.rs 31ms 0.9ms 17.8MB 20ms 0ms wasmtime 32.0.0
csharp 5-m.cs 62ms 2.0ms 37.3MB 87ms 17ms dotnet 9.0.300
csharp 5-m.cs 73ms 0.4ms 31.2MB 103ms 27ms mono 6.12.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 6.8ms 0.2ms 18.0MB 0ms 0ms wasmtime 32.0.0
csharp 1.cs 7.5ms 2.9ms 9.6MB 0ms 0ms dotnet/aot 9.0.300
csharp 1.cs 32ms 1.0ms 23.9MB 20ms 2ms mono 6.12.0
csharp 1.cs 35ms 0.3ms 26.1MB 20ms 0ms dotnet 9.0.300

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 89ms 0.7ms 17.5MB 77ms 0ms wasmtime 32.0.0
csharp 2.cs 93ms 0.6ms 9.6MB 80ms 0ms dotnet/aot 9.0.300
csharp 2.cs 148ms 2.9ms 21.2MB 137ms 3ms mono 6.12.0
csharp 2.cs 255ms 4.3ms 29.5MB 233ms 10ms dotnet 9.0.300
csharp 1.cs 1040ms 5.1ms 13.3MB 1020ms 10ms dotnet/aot 9.0.300
csharp 1.cs 1302ms 18ms 33.1MB 1287ms 20ms dotnet 9.0.300
csharp 1.cs 3346ms 4.8ms 45.5MB 3297ms 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 252ms 2.7ms 19.4MB 240ms 0ms wasmtime 32.0.0
csharp 2.cs 263ms 3.9ms 9.8MB 247ms 0ms dotnet/aot 9.0.300
csharp 2.cs 378ms 23ms 22.6MB 360ms 0ms mono 6.12.0
csharp 2.cs 403ms 7.6ms 29.1MB 383ms 10ms dotnet 9.0.300
csharp 1.cs 3118ms 26ms 13.3MB 3090ms 13ms dotnet/aot 9.0.300
csharp 1.cs 3650ms 14ms 32.8MB 3633ms 17ms dotnet 9.0.300
csharp 1.cs timeout 0.0ms 45.6MB 4940ms 50ms mono 6.12.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 47ms 0.6ms 17.9MB 33ms 0ms wasmtime 32.0.0
csharp 2.cs 51ms 1.0ms 9.6MB 40ms 0ms dotnet/aot 9.0.300
csharp 2.cs 94ms 1.8ms 20.8MB 80ms 0ms mono 6.12.0
csharp 2.cs 166ms 3.5ms 29.5MB 150ms 3ms dotnet 9.0.300
csharp 1.cs 1616ms 3.8ms 32.5MB 1607ms 10ms dotnet 9.0.300
csharp 1.cs 1820ms 10ms 28.8MB 1803ms 0ms mono 6.12.0
csharp 1.cs 1824ms 6.5ms 13.0MB 1807ms 0ms dotnet/aot 9.0.300

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 4.cs 393ms 90ms 37.2MB 370ms 10ms dotnet 9.0.300
csharp 2.cs 542ms 30ms 39.8MB 513ms 17ms dotnet 9.0.300
wasm 8.rs 819ms 2.4ms 20.8MB 803ms 0ms wasmtime 32.0.0
csharp 1.cs 2032ms 8.7ms 36.5MB 2003ms 10ms dotnet 9.0.300
csharp 3.cs 2353ms 7.5ms 16.5MB 2340ms 0ms dotnet/aot 9.0.300
csharp 3.cs 2458ms 7.7ms 36.8MB 2430ms 13ms dotnet 9.0.300
csharp 1.cs 3952ms 112ms 16.2MB 3937ms 0ms dotnet/aot 9.0.300
csharp 1.cs timeout 0.0ms 24.1MB 4983ms 3ms mono 6.12.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 43ms 0.2ms 17.9MB 30ms 0ms wasmtime 32.0.0
csharp 4.cs 80ms 2.2ms 34.4MB 57ms 10ms dotnet 9.0.300
csharp 3.cs 110ms 2.9ms 13.5MB 100ms 0ms dotnet/aot 9.0.300
csharp 2.cs 111ms 4.3ms 36.8MB 87ms 13ms dotnet 9.0.300
csharp 1.cs 138ms 2.6ms 33.5MB 117ms 10ms dotnet 9.0.300
csharp 3.cs 175ms 5.6ms 33.8MB 150ms 10ms dotnet 9.0.300
csharp 1.cs 175ms 5.9ms 13.5MB 163ms 0ms dotnet/aot 9.0.300
csharp 1.cs 574ms 7.0ms 23.7MB 557ms 3ms mono 6.12.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 537ms 11ms 121.0MB 490ms 90ms dotnet/aot 9.0.300
csharp 1.cs 614ms 11ms 143.3MB 563ms 120ms dotnet/aot 9.0.300
csharp 2.cs 684ms 6.9ms 136.2MB 630ms 97ms dotnet 9.0.300
csharp 1.cs 764ms 21ms 161.6MB 710ms 117ms dotnet 9.0.300
wasm 1.rs 901ms 10ms 43.7MB 873ms 10ms wasmtime 32.0.0
csharp 1.cs 1297ms 5.6ms 140.0MB 1507ms 167ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 137ms 9.3ms 57.3MB 110ms 30ms dotnet/aot 9.0.300
csharp 1.cs 158ms 4.3ms 74.7MB 120ms 50ms dotnet/aot 9.0.300
wasm 1.rs 197ms 2.6ms 23.7MB 180ms 0ms wasmtime 32.0.0
csharp 2.cs 262ms 6.1ms 75.2MB 227ms 37ms dotnet 9.0.300
csharp 1.cs 266ms 1.9ms 69.4MB 240ms 37ms mono 6.12.0
csharp 1.cs 272ms 2.6ms 88.1MB 243ms 53ms dotnet 9.0.300

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 363ms 3.7ms 27.6MB 340ms 7ms dotnet 9.0.300
csharp 8.cs 372ms 0.9ms 9.8MB 360ms 0ms dotnet/aot 9.0.300
wasm 1.rs 407ms 0.1ms 18.2MB 393ms 0ms wasmtime 32.0.0
csharp 8.cs 423ms 2.3ms 27.6MB 403ms 3ms dotnet 9.0.300
wasm 2.rs 563ms 1.8ms 17.8MB 550ms 0ms wasmtime 32.0.0
csharp 8.cs 1252ms 5.3ms 22.4MB 1240ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 8.cs 46ms 0.5ms 9.8MB 30ms 0ms dotnet/aot 9.0.300
wasm 1.rs 49ms 0.9ms 18.0MB 40ms 0ms wasmtime 32.0.0
wasm 2.rs 65ms 1.2ms 18.1MB 53ms 0ms wasmtime 32.0.0
csharp 9.cs 93ms 1.5ms 27.8MB 73ms 10ms dotnet 9.0.300
csharp 8.cs 95ms 2.7ms 27.6MB 77ms 7ms dotnet 9.0.300
csharp 8.cs 162ms 0.3ms 22.8MB 150ms 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 325ms 6.5ms 78.7MB 307ms 3ms dotnet/aot 9.0.300
csharp 1.cs 361ms 8.4ms 96.1MB 333ms 13ms dotnet 9.0.300
wasm 2.rs 368ms 9.3ms 22.8MB 357ms 0ms wasmtime 32.0.0
csharp 2.cs 394ms 2.3ms 17.5MB 377ms 0ms dotnet/aot 9.0.300
csharp 2.cs 399ms 6.4ms 35.4MB 380ms 7ms dotnet 9.0.300
wasm 1.rs 476ms 1.3ms 56.7MB 460ms 0ms wasmtime 32.0.0
csharp 1.cs 560ms 6.0ms 82.0MB 540ms 10ms mono 6.12.0
csharp 2.cs 1908ms 73ms 29.5MB 1887ms 3ms mono 6.12.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 63ms 0.6ms 24.8MB 47ms 0ms dotnet/aot 9.0.300
wasm 1.rs 96ms 3.0ms 27.5MB 83ms 0ms wasmtime 32.0.0
wasm 2.rs 97ms 2.1ms 18.9MB 83ms 0ms wasmtime 32.0.0
csharp 1.cs 99ms 2.3ms 42.3MB 77ms 7ms dotnet 9.0.300
csharp 2.cs 102ms 1.9ms 11.9MB 90ms 0ms dotnet/aot 9.0.300
csharp 2.cs 129ms 0.7ms 29.9MB 113ms 7ms dotnet 9.0.300
csharp 1.cs 144ms 1.4ms 36.4MB 130ms 3ms mono 6.12.0
csharp 2.cs 494ms 11ms 21.5MB 480ms 0ms mono 6.12.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2153ms 20ms 19.1MB 2140ms 0ms wasmtime 32.0.0
csharp 1.cs 3259ms 15ms 13.9MB 3147ms 107ms dotnet/aot 9.0.300
csharp 1.cs 3630ms 50ms 38.0MB 3650ms 117ms dotnet 9.0.300

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 504ms 1.2ms 18.1MB 490ms 0ms wasmtime 32.0.0
csharp 1.cs 761ms 6.7ms 13.5MB 727ms 20ms dotnet/aot 9.0.300
csharp 1.cs 990ms 7.0ms 37.5MB 1083ms 37ms dotnet 9.0.300

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 2831ms 17ms 13.1MB 2790ms 27ms dotnet/aot 9.0.300
csharp 1.cs 2950ms 24ms 35.1MB 3023ms 40ms dotnet 9.0.300
wasm 1.rs 3424ms 13ms 17.6MB 3410ms 0ms wasmtime 32.0.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 717ms 5.6ms 12.8MB 697ms 7ms dotnet/aot 9.0.300
wasm 1.rs 862ms 4.0ms 17.6MB 850ms 0ms wasmtime 32.0.0
csharp 1.cs 1001ms 5.2ms 35.1MB 1100ms 17ms dotnet 9.0.300

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1877ms 33ms 10.4MB 7243ms 3ms dotnet/aot 9.0.300
csharp 3-m.cs 1988ms 108ms 30.3MB 7253ms 20ms dotnet 9.0.300
wasm 2.rs 3700ms 13ms 17.7MB 3687ms 0ms wasmtime 32.0.0
csharp 3-m.cs 4713ms 116ms 24.7MB 18030ms 17ms mono 6.12.0
wasm 7.rs 4896ms 4.6ms 17.6MB 4883ms 0ms wasmtime 32.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 475ms 1.5ms 10.5MB 1810ms 0ms dotnet/aot 9.0.300
csharp 3-m.cs 535ms 3.2ms 30.1MB 1887ms 10ms dotnet 9.0.300
wasm 2.rs 932ms 4.9ms 17.6MB 920ms 0ms wasmtime 32.0.0
wasm 7.rs 1230ms 0.5ms 18.1MB 1220ms 0ms wasmtime 32.0.0
csharp 3-m.cs 1236ms 42ms 25.8MB 4650ms 7ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 128ms 1.5ms 10.5MB 450ms 0ms dotnet/aot 9.0.300
csharp 3-m.cs 176ms 1.1ms 28.5MB 503ms 10ms dotnet 9.0.300
wasm 2.rs 238ms 0.5ms 18.2MB 227ms 0ms wasmtime 32.0.0
wasm 7.rs 314ms 0.7ms 17.9MB 300ms 0ms wasmtime 32.0.0
csharp 3-m.cs 356ms 11ms 25.4MB 1197ms 3ms mono 6.12.0