Programming Language and compiler
Benchmarks

C VS Ruby benchmarks

Current benchmark data was generated on Sun Jun 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 0.0ms 1.4MB 0ms 0ms zigcc 0.14.1
c 1.c 1.2ms 0.0ms 2.1MB 0ms 0ms gcc 15.1.0
c 1.c 1.2ms 0.0ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1
ruby 1.rb 34ms 0.5ms 141.5MB 10ms 26ms truffleruby 24.2.1
ruby 1.rb 50ms 1.4ms 12.9MB 38ms 2ms ruby/yjit 3.4.4
ruby 1.rb 51ms 1.7ms 12.8MB 36ms 2ms ruby 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 172ms 2.2ms 23.6MB 403ms 7ms gcc 15.1.0
c 1-m.c 292ms 0.1ms 25.7MB 1000ms 27ms 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 26ms 1.5ms 13.0MB 57ms 3ms gcc 15.1.0
c 1-m.c 36ms 1.0ms 15.0MB 103ms 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 224ms 14ms 7.5MB 840ms 13ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 269ms 8.5ms 6.5MB 817ms 0ms gcc 15.1.0
c 1-mffi.c 330ms 1.5ms 6.0MB 320ms 0ms zigcc 0.14.1
c 1-ffi.c 332ms 2.8ms 6.0MB 323ms 0ms zigcc 0.14.1
c 1-ffi.c 452ms 0.9ms 6.5MB 440ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 543ms 2.3ms 6.6MB 533ms 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 15ms 0.5ms 4.6MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 16ms 0.1ms 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 17ms 2.0ms 3.8MB 43ms 0ms gcc 15.1.0
c 1-ffi.c 21ms 0.1ms 3.5MB 10ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 25ms 0.4ms 3.8MB 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 270ms 3.2ms 1.5MB 263ms 0ms zigcc 0.14.1
c 8-i.c 303ms 3.1ms 2.1MB 293ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 309ms 1.0ms 2.3MB 300ms 0ms gcc 15.1.0
c 2.c 313ms 2.0ms 1.5MB 303ms 0ms zigcc 0.14.1
c 5.c 313ms 1.2ms 2.3MB 307ms 0ms gcc 15.1.0
c 5.c 315ms 1.6ms 1.5MB 307ms 0ms zigcc 0.14.1
c 5.c 315ms 1.6ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 322ms 4.3ms 2.1MB 317ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 337ms 1.0ms 2.3MB 330ms 0ms gcc 15.1.0
ruby 2.rb 823ms 8.8ms 310.2MB 1070ms 110ms 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 4983ms 3ms 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 0.6ms 1.5MB 20ms 0ms zigcc 0.14.1
c 8-i.c 33ms 0.2ms 2.1MB 20ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 33ms 0.3ms 1.5MB 30ms 0ms zigcc 0.14.1
c 5.c 33ms 0.3ms 2.3MB 30ms 0ms gcc 15.1.0
c 5.c 34ms 0.4ms 1.5MB 27ms 0ms zigcc 0.14.1
c 2.c 34ms 0.9ms 2.3MB 27ms 0ms gcc 15.1.0
c 5.c 34ms 1.0ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 34ms 0.7ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 35ms 0.1ms 2.3MB 30ms 0ms gcc 15.1.0
ruby 2-m.rb 323ms 5.2ms 325.5MB 593ms 110ms truffleruby 24.2.1
ruby 2.rb 1025ms 6.4ms 13.5MB 1010ms 3ms ruby/yjit 3.4.4
ruby 2.rb 2919ms 94ms 12.8MB 2903ms 3ms ruby 3.4.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 261ms 9.0ms 40.9MB 243ms 0ms gcc 15.1.0
c 1.c 271ms 2.2ms 41.0MB 257ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 285ms 5.2ms 40.3MB 270ms 0ms zigcc 0.14.1
ruby 1.rb timeout 0.0ms 325.3MB 4850ms 133ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 327.0MB 4847ms 140ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 731.9MB 5060ms 163ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 53ms 3.0ms 11.7MB 40ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 55ms 2.4ms 11.6MB 43ms 0ms gcc 15.1.0
c 1.c 58ms 2.2ms 11.0MB 47ms 0ms zigcc 0.14.1
ruby 1-m.rb 1696ms 5.1ms 473.6MB 2500ms 160ms truffleruby 24.2.1
ruby 1.rb 3471ms 137ms 131.8MB 3380ms 80ms ruby/yjit 3.4.4
ruby 1.rb 4452ms 24ms 131.1MB 4367ms 70ms 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 736ms 1.2ms 2.0MB 2897ms 0ms gcc 15.1.0
c 6-im.c 951ms 0.7ms 2.0MB 3743ms 0ms gcc 15.1.0
c 4-m.c 999ms 19ms 2.0MB 3907ms 0ms gcc 15.1.0
c 6-im.c 1002ms 3.9ms 3.3MB 3943ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 1132ms 22ms 3.4MB 4423ms 7ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1142ms 1.9ms 2.0MB 4507ms 0ms gcc 15.1.0
c 5-im.c 1330ms 4.1ms 3.3MB 5240ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1830ms 5.6ms 3.3MB 7220ms 10ms clang 14.0.0-1ubuntu1.1
ruby 4.rb timeout 0.0ms 12.9MB 4983ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.4
ruby 4.rb timeout 0.0ms 436.2MB 5167ms 233ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 3-m.c 193ms 1.4ms 2.0MB 737ms 0ms gcc 15.1.0
c 6-im.c 247ms 2.2ms 2.0MB 943ms 0ms gcc 15.1.0
c 4-m.c 258ms 0.8ms 2.0MB 990ms 0ms gcc 15.1.0
c 6-im.c 259ms 2.3ms 3.3MB 983ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 290ms 4.2ms 3.1MB 1107ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 303ms 19ms 2.0MB 1153ms 0ms gcc 15.1.0
c 5-im.c 341ms 2.7ms 3.4MB 1310ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 476ms 17ms 3.3MB 1823ms 0ms clang 14.0.0-1ubuntu1.1
ruby 4.rb 4820ms 15ms 423.5MB 5103ms 203ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4987ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 0ms 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 55ms 1.1ms 2.0MB 193ms 0ms gcc 15.1.0
c 6-im.c 70ms 0.8ms 3.3MB 250ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 72ms 0.8ms 2.1MB 260ms 0ms gcc 15.1.0
c 6-im.c 72ms 6.7ms 2.0MB 257ms 0ms gcc 15.1.0
c 4-m.c 78ms 0.4ms 3.1MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 81ms 0.6ms 2.0MB 297ms 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 123ms 2.1ms 3.4MB 453ms 0ms clang 14.0.0-1ubuntu1.1
ruby 4.rb 1453ms 19ms 405.2MB 1797ms 150ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4983ms 7ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 7ms ruby/yjit 3.4.4