Programming Language and compiler
Benchmarks

OCaml VS C# benchmarks

Current benchmark data was generated on Thu May 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 943ms 22ms 185.3MB 937ms 150ms dotnet 9.0.203
csharp 1.cs 955ms 17ms 188.9MB 957ms 143ms dotnet/aot 9.0.203
csharp 1.cs 1699ms 20ms 101.5MB 1897ms 217ms mono 6.12.0
ocaml 1.ml 3316ms 13ms 157.1MB 3237ms 67ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 123ms 5.1ms 31.9MB 87ms 33ms dotnet/aot 9.0.203
csharp 1.cs 140ms 0.7ms 44.1MB 117ms 13ms mono 6.12.0
csharp 1.cs 206ms 6.4ms 50.4MB 157ms 37ms dotnet 9.0.203
ocaml 1.ml 247ms 3.4ms 19.1MB 233ms 0ms ocaml 5.3.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 2912ms 1.6ms 4.9MB 2900ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 244ms 1.2ms 4.9MB 237ms 0ms ocaml 5.3.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 114ms 1.5ms 22.1MB 350ms 57ms dotnet/aot 9.0.203
csharp 5-m.cs 190ms 2.0ms 38.3MB 467ms 123ms dotnet 9.0.203
csharp 5-m.cs 241ms 15ms 51.6MB 663ms 123ms mono 6.12.0
ocaml 6.ml 345ms 1.2ms 24.8MB 330ms 0ms ocaml 5.3.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 24ms 1.2ms 15.6MB 33ms 13ms dotnet/aot 9.0.203
ocaml 6.ml 38ms 0.9ms 7.5MB 30ms 0ms ocaml 5.3.0
csharp 5-m.cs 65ms 3.9ms 37.4MB 87ms 17ms dotnet 9.0.203
csharp 5-m.cs 71ms 1.9ms 30.8MB 100ms 27ms mono 6.12.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 1.7ms 0.2ms 5.0MB 0ms 0ms ocaml 5.3.0
csharp 1.cs 10ms 5.6ms 7.6MB 0ms 0ms dotnet/aot 9.0.203
csharp 1.cs 31ms 1.0ms 21.4MB 20ms 0ms mono 6.12.0
csharp 1.cs 34ms 0.4ms 26.0MB 20ms 2ms dotnet 9.0.203

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 94ms 1.7ms 9.8MB 80ms 0ms dotnet/aot 9.0.203
csharp 2.cs 151ms 1.0ms 23.2MB 133ms 0ms mono 6.12.0
ocaml 1.ml 180ms 3.9ms 6.4MB 167ms 0ms ocaml 5.3.0
csharp 2.cs 256ms 3.5ms 29.5MB 240ms 7ms dotnet 9.0.203
csharp 1.cs 1044ms 8.4ms 13.0MB 1027ms 3ms dotnet/aot 9.0.203
csharp 1.cs 1298ms 21ms 33.0MB 1283ms 13ms dotnet 9.0.203
csharp 1.cs 3310ms 13ms 45.4MB 3267ms 33ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 260ms 1.6ms 9.8MB 250ms 0ms dotnet/aot 9.0.203
csharp 2.cs 361ms 6.0ms 23.0MB 343ms 0ms mono 6.12.0
csharp 2.cs 404ms 3.1ms 29.4MB 390ms 7ms dotnet 9.0.203
ocaml 1.ml 539ms 20ms 6.6MB 530ms 0ms ocaml 5.3.0
csharp 1.cs 3097ms 9.3ms 13.1MB 3073ms 13ms dotnet/aot 9.0.203
csharp 1.cs 3653ms 102ms 32.4MB 3643ms 17ms dotnet 9.0.203
csharp 1.cs timeout 0.0ms 43.6MB 4940ms 50ms mono 6.12.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 50ms 1.8ms 9.6MB 40ms 0ms dotnet/aot 9.0.203
ocaml 1.ml 77ms 1.5ms 5.9MB 70ms 0ms ocaml 5.3.0
csharp 2.cs 94ms 2.7ms 22.8MB 80ms 0ms mono 6.12.0
csharp 2.cs 168ms 1.0ms 29.3MB 150ms 3ms dotnet 9.0.203
csharp 1.cs 1616ms 2.4ms 32.8MB 1610ms 13ms dotnet 9.0.203
csharp 1.cs 1820ms 6.9ms 28.8MB 1803ms 0ms mono 6.12.0
csharp 1.cs 1826ms 2.7ms 12.9MB 1813ms 0ms dotnet/aot 9.0.203

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 542ms 21ms 121.4MB 490ms 90ms dotnet/aot 9.0.203
csharp 1.cs 603ms 8.7ms 143.3MB 557ms 117ms dotnet/aot 9.0.203
csharp 2.cs 678ms 16ms 136.3MB 627ms 100ms dotnet 9.0.203
csharp 1.cs 761ms 17ms 164.3MB 697ms 130ms dotnet 9.0.203
ocaml 1.ml 1072ms 7.8ms 70.2MB 1030ms 23ms ocaml 5.3.0
csharp 1.cs 1306ms 19ms 140.5MB 1507ms 173ms mono 6.12.0
ocaml 2.ml 2063ms 33ms 91.7MB 2003ms 47ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 135ms 2.4ms 57.2MB 110ms 30ms dotnet/aot 9.0.203
ocaml 1.ml 144ms 1.3ms 21.6MB 130ms 3ms ocaml 5.3.0
csharp 1.cs 157ms 2.1ms 74.5MB 120ms 53ms dotnet/aot 9.0.203
csharp 2.cs 258ms 7.0ms 74.8MB 223ms 40ms dotnet 9.0.203
csharp 1.cs 258ms 0.7ms 69.4MB 233ms 30ms mono 6.12.0
csharp 1.cs 281ms 5.4ms 89.5MB 237ms 57ms dotnet 9.0.203
ocaml 2.ml 352ms 1.6ms 27.7MB 333ms 7ms ocaml 5.3.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 358ms 2.8ms 28.0MB 340ms 7ms dotnet 9.0.203
csharp 8.cs 370ms 3.1ms 9.9MB 360ms 0ms dotnet/aot 9.0.203
ocaml 1.ml 372ms 2.6ms 5.2MB 363ms 0ms ocaml 5.3.0
csharp 8.cs 423ms 3.6ms 27.5MB 400ms 7ms dotnet 9.0.203
csharp 8.cs 1250ms 5.1ms 20.4MB 1237ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 40ms 0.0ms 5.3MB 30ms 0ms ocaml 5.3.0
csharp 8.cs 46ms 1.1ms 9.9MB 37ms 0ms dotnet/aot 9.0.203
csharp 9.cs 90ms 1.4ms 27.6MB 73ms 3ms dotnet 9.0.203
csharp 8.cs 94ms 1.2ms 27.5MB 80ms 3ms dotnet 9.0.203
csharp 8.cs 164ms 3.9ms 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 310ms 3.9ms 78.9MB 290ms 10ms dotnet/aot 9.0.203
csharp 1.cs 355ms 2.4ms 96.3MB 330ms 13ms dotnet 9.0.203
csharp 2.cs 393ms 1.8ms 17.4MB 377ms 0ms dotnet/aot 9.0.203
csharp 2.cs 397ms 1.9ms 35.6MB 380ms 7ms dotnet 9.0.203
csharp 1.cs 550ms 8.4ms 84.0MB 527ms 10ms mono 6.12.0
ocaml 1.ml 955ms 5.3ms 552.0MB 893ms 43ms ocaml 5.3.0
csharp 2.cs 1862ms 2.9ms 27.5MB 1847ms 0ms mono 6.12.0
ocaml 2.ml 1880ms 9.6ms 17.1MB 1867ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 64ms 3.2ms 24.8MB 50ms 7ms dotnet/aot 9.0.203
csharp 1.cs 100ms 1.2ms 42.3MB 80ms 7ms dotnet 9.0.203
csharp 2.cs 101ms 1.3ms 11.9MB 90ms 0ms dotnet/aot 9.0.203
csharp 2.cs 127ms 1.0ms 30.1MB 103ms 10ms dotnet 9.0.203
csharp 1.cs 146ms 1.7ms 38.2MB 130ms 7ms mono 6.12.0
ocaml 1.ml 185ms 5.7ms 139.6MB 163ms 10ms ocaml 5.3.0
ocaml 2.ml 469ms 4.3ms 9.1MB 457ms 0ms ocaml 5.3.0
csharp 2.cs 483ms 5.4ms 23.0MB 470ms 0ms mono 6.12.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6.cs 1761ms 4.6ms 416.8MB 1653ms 160ms dotnet/aot 9.0.203
csharp 5.cs 2090ms 65ms 445.0MB 2137ms 177ms dotnet 9.0.203
csharp 6.cs 2767ms 68ms 439.8MB 2703ms 187ms dotnet 9.0.203
csharp 5.cs 4291ms 32ms 418.5MB 4193ms 153ms dotnet/aot 9.0.203
ocaml 2.ml timeout 0.0ms 462.8MB 4817ms 170ms ocaml 5.3.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6.cs 191ms 2.6ms 47.8MB 167ms 17ms dotnet/aot 9.0.203
csharp 5.cs 281ms 1.6ms 72.4MB 253ms 30ms dotnet 9.0.203
csharp 6.cs 389ms 1.5ms 70.3MB 363ms 27ms dotnet 9.0.203
csharp 5.cs 443ms 4.6ms 46.8MB 417ms 13ms dotnet/aot 9.0.203
ocaml 2.ml 547ms 3.7ms 57.1MB 510ms 23ms ocaml 5.3.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1857ms 0.8ms 10.5MB 7263ms 10ms dotnet/aot 9.0.203
csharp 3-m.cs 1927ms 7.1ms 30.0MB 7350ms 17ms dotnet 9.0.203
ocaml 2.ml 4563ms 8.7ms 6.4MB 4553ms 0ms ocaml 5.3.0
csharp 3-m.cs 4664ms 7.4ms 25.5MB 18030ms 17ms mono 6.12.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 473ms 1.1ms 10.4MB 1810ms 0ms dotnet/aot 9.0.203
csharp 3-m.cs 536ms 6.8ms 29.8MB 1880ms 10ms dotnet 9.0.203
ocaml 2.ml 1146ms 6.2ms 6.1MB 1137ms 0ms ocaml 5.3.0
csharp 3-m.cs 1213ms 6.5ms 25.6MB 4547ms 10ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 127ms 1.6ms 10.5MB 450ms 0ms dotnet/aot 9.0.203
csharp 3-m.cs 181ms 4.2ms 28.5MB 503ms 10ms dotnet 9.0.203
ocaml 2.ml 293ms 2.5ms 5.2MB 283ms 0ms ocaml 5.3.0
csharp 3-m.cs 353ms 13ms 25.5MB 1193ms 10ms mono 6.12.0