Programming Language and compiler
Benchmarks

C VS C# 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.)

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 1.0ms 0.1ms 1.3MB 0ms 0ms zigcc 0.14.1
c 1.c 1.2ms 0.1ms 2.1MB 0ms 0ms gcc 15.1.0
c 1.c 1.6ms 0.7ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1
csharp 1.cs 6.8ms 2.0ms 9.5MB 0ms 0ms dotnet/aot 9.0.303
csharp 1.cs 30ms 1.2ms 21.3MB 20ms 0ms mono 6.12.0
csharp 1.cs 35ms 0.9ms 26.1MB 20ms 4ms dotnet 9.0.303

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 171ms 4.2ms 24.1MB 400ms 10ms gcc 15.1.0
c 1-m.c 293ms 1.6ms 25.7MB 1000ms 23ms clang 14.0.0-1ubuntu1.1
csharp 6-m.cs 453ms 13ms 45.8MB 1247ms 20ms dotnet/aot 9.0.303
csharp 6-m.cs 739ms 38ms 67.3MB 2053ms 33ms dotnet 9.0.303
csharp 6-m.cs 1004ms 20ms 66.7MB 2900ms 23ms mono 6.12.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 27ms 1.3ms 13.6MB 60ms 0ms gcc 15.1.0
c 1-m.c 37ms 0.3ms 15.0MB 93ms 3ms clang 14.0.0-1ubuntu1.1
csharp 6-m.cs 94ms 2.4ms 36.8MB 153ms 20ms dotnet/aot 9.0.303
csharp 6-m.cs 177ms 4.9ms 57.5MB 263ms 30ms dotnet 9.0.303
csharp 6-m.cs 196ms 3.7ms 60.3MB 377ms 20ms mono 6.12.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 219ms 4.3ms 7.6MB 810ms 10ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 264ms 0.9ms 6.6MB 810ms 0ms gcc 15.1.0
c 1-ffi.c 330ms 2.0ms 6.0MB 320ms 0ms zigcc 0.14.1
c 1-mffi.c 331ms 0.8ms 6.0MB 320ms 0ms zigcc 0.14.1
csharp 4.cs 368ms 62ms 37.4MB 347ms 10ms dotnet 9.0.303
c 1-ffi.c 453ms 1.0ms 6.5MB 443ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 545ms 3.1ms 6.8MB 537ms 0ms gcc 15.1.0
csharp 2.cs 555ms 59ms 39.9MB 530ms 17ms dotnet 9.0.303
csharp 1.cs 2032ms 7.1ms 36.4MB 2013ms 7ms dotnet 9.0.303
csharp 3.cs 2350ms 12ms 16.3MB 2337ms 0ms dotnet/aot 9.0.303
csharp 3.cs 2444ms 2.0ms 36.8MB 2413ms 10ms dotnet 9.0.303
csharp 1.cs 3888ms 10ms 16.2MB 3870ms 0ms dotnet/aot 9.0.303
csharp 1.cs timeout 0.0ms 24.1MB 4983ms 0ms mono 6.12.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 15ms 1.2ms 4.8MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 16ms 0.3ms 3.0MB 10ms 0ms zigcc 0.14.1
c 1-mffi.c 16ms 0.4ms 3.0MB 10ms 0ms zigcc 0.14.1
c 1-mffi.c 16ms 1.2ms 3.8MB 40ms 0ms gcc 15.1.0
c 1-ffi.c 21ms 0.2ms 3.6MB 10ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 26ms 1.1ms 3.8MB 20ms 0ms gcc 15.1.0
csharp 4.cs 80ms 2.1ms 34.5MB 57ms 10ms dotnet 9.0.303
csharp 3.cs 108ms 2.0ms 13.3MB 100ms 0ms dotnet/aot 9.0.303
csharp 2.cs 117ms 3.8ms 37.1MB 93ms 10ms dotnet 9.0.303
csharp 1.cs 139ms 6.8ms 33.8MB 120ms 7ms dotnet 9.0.303
csharp 3.cs 165ms 4.4ms 33.9MB 140ms 10ms dotnet 9.0.303
csharp 1.cs 174ms 3.7ms 13.0MB 160ms 0ms dotnet/aot 9.0.303
csharp 1.cs 567ms 3.0ms 23.3MB 553ms 0ms mono 6.12.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 268ms 0.7ms 1.5MB 260ms 0ms zigcc 0.14.1
c 8-i.c 303ms 1.7ms 2.1MB 290ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 310ms 1.5ms 2.3MB 300ms 0ms gcc 15.1.0
c 2.c 312ms 1.1ms 1.5MB 300ms 0ms zigcc 0.14.1
c 5.c 314ms 2.4ms 2.3MB 303ms 0ms gcc 15.1.0
c 5.c 315ms 1.3ms 2.1MB 307ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 316ms 1.0ms 1.5MB 310ms 0ms zigcc 0.14.1
c 2.c 317ms 0.2ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 336ms 0.3ms 2.3MB 330ms 0ms gcc 15.1.0
csharp 9.cs 360ms 0.9ms 27.9MB 340ms 7ms dotnet 9.0.303
csharp 8.cs 370ms 0.9ms 9.9MB 357ms 0ms dotnet/aot 9.0.303
csharp 8.cs 420ms 3.5ms 27.6MB 400ms 7ms dotnet 9.0.303
csharp 8.cs 1246ms 2.5ms 22.8MB 1230ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 29ms 0.5ms 1.5MB 20ms 0ms zigcc 0.14.1
c 8-i.c 32ms 0.4ms 2.1MB 23ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 34ms 0.4ms 2.3MB 30ms 0ms gcc 15.1.0
c 2.c 34ms 0.1ms 1.5MB 30ms 0ms zigcc 0.14.1
c 5.c 34ms 0.4ms 2.1MB 27ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 34ms 0.3ms 2.3MB 30ms 0ms gcc 15.1.0
c 2.c 34ms 0.4ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 34ms 0.6ms 1.5MB 30ms 0ms zigcc 0.14.1
c 8-i.c 36ms 0.2ms 2.3MB 30ms 0ms gcc 15.1.0
csharp 8.cs 46ms 1.3ms 9.9MB 33ms 0ms dotnet/aot 9.0.303
csharp 9.cs 93ms 5.0ms 27.8MB 73ms 7ms dotnet 9.0.303
csharp 8.cs 94ms 2.2ms 27.6MB 77ms 3ms dotnet 9.0.303
csharp 8.cs 162ms 3.6ms 22.9MB 150ms 0ms mono 6.12.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 266ms 3.7ms 40.9MB 250ms 0ms gcc 15.1.0
c 1.c 268ms 5.1ms 41.0MB 253ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 283ms 6.3ms 40.3MB 270ms 0ms zigcc 0.14.1
csharp 1.cs 304ms 2.9ms 78.8MB 283ms 7ms dotnet/aot 9.0.303
csharp 1.cs 335ms 11ms 96.1MB 310ms 17ms dotnet 9.0.303
csharp 2.cs 395ms 5.1ms 35.8MB 370ms 10ms dotnet 9.0.303
csharp 2.cs 425ms 3.3ms 17.5MB 410ms 0ms dotnet/aot 9.0.303
csharp 1.cs 535ms 4.1ms 84.0MB 517ms 7ms mono 6.12.0
csharp 2.cs 1862ms 5.9ms 27.5MB 1843ms 3ms mono 6.12.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 54ms 5.0ms 11.6MB 43ms 0ms gcc 15.1.0
c 1.c 55ms 3.1ms 11.7MB 43ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 59ms 2.4ms 11.0MB 50ms 0ms zigcc 0.14.1
csharp 1.cs 66ms 2.7ms 24.9MB 50ms 0ms dotnet/aot 9.0.303
csharp 1.cs 98ms 1.4ms 42.5MB 80ms 10ms dotnet 9.0.303
csharp 2.cs 108ms 1.0ms 11.8MB 97ms 0ms dotnet/aot 9.0.303
csharp 2.cs 131ms 1.6ms 30.0MB 110ms 10ms dotnet 9.0.303
csharp 1.cs 142ms 0.4ms 38.0MB 127ms 0ms mono 6.12.0
csharp 2.cs 480ms 1.2ms 23.0MB 470ms 0ms mono 6.12.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 3-m.c 744ms 14ms 2.0MB 2913ms 0ms gcc 15.1.0
c 6-im.c 951ms 1.1ms 2.0MB 3750ms 0ms gcc 15.1.0
c 4-m.c 990ms 3.6ms 2.1MB 3893ms 0ms gcc 15.1.0
c 6-im.c 1002ms 3.4ms 3.4MB 3940ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 1118ms 0.6ms 3.1MB 4400ms 3ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1149ms 13ms 2.0MB 4520ms 0ms gcc 15.1.0
c 5-im.c 1338ms 17ms 3.3MB 5263ms 3ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1841ms 23ms 3.3MB 7240ms 7ms clang 14.0.0-1ubuntu1.1
csharp 3-m.cs 1885ms 25ms 10.5MB 7280ms 0ms dotnet/aot 9.0.303
csharp 3-m.cs 1919ms 3.3ms 30.1MB 7350ms 23ms dotnet 9.0.303
csharp 3-m.cs 4704ms 149ms 25.7MB 17910ms 13ms mono 6.12.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 3-m.c 193ms 0.4ms 2.0MB 737ms 0ms gcc 15.1.0
c 6-im.c 245ms 0.2ms 2.0MB 937ms 0ms gcc 15.1.0
c 6-im.c 258ms 0.6ms 3.1MB 987ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 261ms 3.1ms 2.0MB 1000ms 0ms gcc 15.1.0
c 4-m.c 287ms 0.9ms 3.3MB 1103ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 293ms 0.6ms 2.0MB 1130ms 0ms gcc 15.1.0
c 5-im.c 340ms 0.6ms 3.3MB 1310ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 463ms 0.0ms 3.3MB 1807ms 0ms clang 14.0.0-1ubuntu1.1
csharp 3-m.cs 479ms 1.1ms 10.4MB 1817ms 0ms dotnet/aot 9.0.303
csharp 3-m.cs 534ms 3.5ms 30.0MB 1880ms 17ms dotnet 9.0.303
csharp 3-m.cs 1244ms 39ms 25.7MB 4693ms 10ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 3-m.c 58ms 5.3ms 2.0MB 203ms 0ms gcc 15.1.0
c 6-im.c 68ms 0.4ms 2.0MB 243ms 0ms gcc 15.1.0
c 6-im.c 70ms 0.3ms 3.3MB 247ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 72ms 0.6ms 2.1MB 260ms 0ms gcc 15.1.0
c 4-m.c 77ms 0.2ms 3.0MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 80ms 0.2ms 2.0MB 290ms 0ms gcc 15.1.0
c 5-im.c 92ms 0.5ms 3.3MB 330ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 122ms 0.9ms 3.3MB 450ms 0ms clang 14.0.0-1ubuntu1.1
csharp 3-m.cs 128ms 0.6ms 10.6MB 453ms 0ms dotnet/aot 9.0.303
csharp 3-m.cs 180ms 5.3ms 28.5MB 503ms 7ms dotnet 9.0.303
csharp 3-m.cs 347ms 1.9ms 25.4MB 1170ms 7ms mono 6.12.0