Programming Language and compiler
Benchmarks

C VS Ruby benchmarks

Current benchmark data was generated on Tue Jul 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 1.2ms 0.0ms 2.1MB 0ms 0ms gcc 15.1.0
c 1.c 1.3ms 0.1ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 1.3ms 0.2ms 1.3MB 0ms 0ms zigcc 0.14.1
ruby 1.rb 35ms 1.1ms 141.3MB 16ms 24ms truffleruby 24.2.1
ruby 1.rb 52ms 0.9ms 12.8MB 40ms 0ms ruby 3.4.4
ruby 1.rb 52ms 1.2ms 12.9MB 40ms 2ms ruby/yjit 3.4.4

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 171ms 3.7ms 24.2MB 403ms 10ms gcc 15.1.0
c 1-m.c 298ms 5.1ms 25.7MB 993ms 23ms clang 14.0.0-1ubuntu1.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 28ms 1.2ms 13.6MB 60ms 0ms gcc 15.1.0
c 1-m.c 39ms 0.8ms 15.0MB 110ms 0ms clang 14.0.0-1ubuntu1.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 231ms 18ms 7.6MB 853ms 10ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 264ms 0.4ms 6.6MB 820ms 0ms gcc 15.1.0
c 1-mffi.c 331ms 2.3ms 6.0MB 320ms 0ms zigcc 0.14.1
c 1-ffi.c 332ms 1.4ms 6.1MB 320ms 0ms zigcc 0.14.1
c 1-ffi.c 455ms 3.6ms 6.5MB 443ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 542ms 0.4ms 6.8MB 530ms 0ms gcc 15.1.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 16ms 0.8ms 4.5MB 40ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 16ms 0.2ms 3.0MB 10ms 0ms zigcc 0.14.1
c 1-mffi.c 16ms 0.2ms 3.0MB 10ms 0ms zigcc 0.14.1
c 1-mffi.c 18ms 0.4ms 3.6MB 43ms 0ms gcc 15.1.0
c 1-ffi.c 24ms 5.3ms 3.6MB 13ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 26ms 0.9ms 3.9MB 20ms 0ms gcc 15.1.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 269ms 3.0ms 1.5MB 260ms 0ms zigcc 0.14.1
c 8-i.c 300ms 0.9ms 2.1MB 290ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 309ms 1.8ms 2.3MB 300ms 0ms gcc 15.1.0
c 2.c 313ms 2.3ms 1.5MB 300ms 0ms zigcc 0.14.1
c 5.c 313ms 0.7ms 2.3MB 300ms 0ms gcc 15.1.0
c 5.c 315ms 0.5ms 1.5MB 307ms 0ms zigcc 0.14.1
c 5.c 317ms 2.1ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 318ms 2.8ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 337ms 0.8ms 2.3MB 330ms 0ms gcc 15.1.0
ruby 2.rb 835ms 11ms 315.3MB 1080ms 117ms truffleruby 24.2.1
ruby 2.rb timeout 0.0ms 12.8MB 4983ms 3ms ruby 3.4.4
ruby 2.rb timeout 0.0ms 13.5MB 4980ms 7ms ruby/yjit 3.4.4

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 33ms 0.5ms 2.1MB 27ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 33ms 0.3ms 1.5MB 30ms 0ms zigcc 0.14.1
c 2.c 34ms 0.5ms 2.3MB 23ms 0ms gcc 15.1.0
c 5.c 34ms 0.6ms 2.3MB 30ms 0ms gcc 15.1.0
c 5.c 34ms 0.1ms 1.5MB 30ms 0ms zigcc 0.14.1
c 2.c 34ms 0.9ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 35ms 0.9ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 36ms 0.4ms 2.3MB 30ms 0ms gcc 15.1.0
ruby 2-m.rb 323ms 13ms 309.9MB 563ms 123ms truffleruby 24.2.1
ruby 2.rb 1026ms 2.7ms 13.5MB 1007ms 7ms ruby/yjit 3.4.4
ruby 2.rb 2901ms 120ms 12.8MB 2887ms 0ms ruby 3.4.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 280ms 23ms 41.1MB 263ms 0ms gcc 15.1.0
c 1.c 300ms 13ms 40.3MB 283ms 0ms zigcc 0.14.1
c 1.c 311ms 7.1ms 40.8MB 293ms 0ms clang 14.0.0-1ubuntu1.1
ruby 1.rb timeout 0.0ms 325.3MB 4850ms 137ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 327.0MB 4857ms 130ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 731.6MB 5057ms 170ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 52ms 3.9ms 11.8MB 43ms 0ms gcc 15.1.0
c 1.c 53ms 3.3ms 11.7MB 43ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 58ms 2.4ms 11.0MB 50ms 0ms zigcc 0.14.1
ruby 1-m.rb 1708ms 13ms 494.0MB 2480ms 177ms truffleruby 24.2.1
ruby 1.rb 3451ms 53ms 131.8MB 3363ms 73ms ruby/yjit 3.4.4
ruby 1.rb 4587ms 13ms 131.1MB 4493ms 77ms ruby 3.4.4

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 3-m.c 737ms 1.3ms 2.0MB 2893ms 0ms gcc 15.1.0
c 6-im.c 953ms 1.8ms 2.0MB 3750ms 0ms gcc 15.1.0
c 4-m.c 988ms 1.5ms 2.0MB 3890ms 0ms gcc 15.1.0
c 6-im.c 1003ms 2.1ms 3.3MB 3940ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 1120ms 3.0ms 3.3MB 4407ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1161ms 30ms 2.0MB 4523ms 0ms gcc 15.1.0
c 5-im.c 1334ms 14ms 3.3MB 5230ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1836ms 7.3ms 3.3MB 7223ms 7ms clang 14.0.0-1ubuntu1.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 0ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.4
ruby 4.rb timeout 0.0ms 449.5MB 5163ms 247ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 3-m.c 194ms 0.6ms 2.0MB 737ms 0ms gcc 15.1.0
c 6-im.c 245ms 0.6ms 2.0MB 940ms 0ms gcc 15.1.0
c 6-im.c 258ms 0.7ms 3.3MB 990ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 258ms 0.4ms 2.0MB 997ms 0ms gcc 15.1.0
c 4-m.c 287ms 0.2ms 3.3MB 1103ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 295ms 3.4ms 2.0MB 1137ms 0ms gcc 15.1.0
c 5-im.c 342ms 1.7ms 3.3MB 1310ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 464ms 1.1ms 3.3MB 1803ms 0ms clang 14.0.0-1ubuntu1.1
ruby 4.rb 4909ms 38ms 442.4MB 5200ms 217ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 0ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 3-m.c 56ms 0.8ms 2.0MB 197ms 0ms gcc 15.1.0
c 6-im.c 68ms 0.4ms 2.3MB 247ms 0ms gcc 15.1.0
c 6-im.c 71ms 0.2ms 3.4MB 250ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 72ms 0.5ms 2.0MB 260ms 0ms gcc 15.1.0
c 4-m.c 78ms 0.6ms 3.3MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 80ms 0.4ms 2.0MB 293ms 0ms gcc 15.1.0
c 5-im.c 93ms 1.9ms 3.3MB 333ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 123ms 0.4ms 3.3MB 453ms 0ms clang 14.0.0-1ubuntu1.1
ruby 4.rb 1458ms 5.9ms 388.7MB 1803ms 150ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 0ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.6MB 4983ms 0ms ruby/yjit 3.4.4