Programming Language and compiler
Benchmarks

C++ VS Ruby benchmarks

Current benchmark data was generated on Mon Apr 14 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.)

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 396ms 7.9ms 2.6MB 1530ms 0ms g++ 11.4.0
cpp 1-im.cpp 405ms 5.0ms 4.0MB 1567ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 39ms 0.3ms 2.6MB 130ms 0ms g++ 11.4.0
cpp 1-im.cpp 39ms 0.2ms 3.9MB 130ms 0ms clang++ 14.0.0-1ubuntu1.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.1ms 0.1ms 1.4MB 0ms 0ms g++ 11.4.0
cpp 1.cpp 1.4ms 0.2ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 1.rb 35ms 0.5ms 141.8MB 14ms 24ms truffleruby 24.2.0
ruby 1.rb 51ms 1.1ms 12.9MB 38ms 0ms ruby 3.4.2
ruby 1.rb 53ms 1.6ms 13.1MB 38ms 2ms ruby/yjit 3.4.2

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 167ms 0.2ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 171ms 0.3ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 314ms 0.6ms 2.3MB 303ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 314ms 1.5ms 1.8MB 310ms 0ms g++ 11.4.0
ruby 2.rb 825ms 4.5ms 309.8MB 1053ms 117ms truffleruby 24.2.0
ruby 2.rb timeout 0.0ms 12.9MB 4987ms 0ms ruby 3.4.2
ruby 2.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 19ms 0.1ms 1.5MB 10ms 0ms g++ 11.4.0
cpp 0-i.cpp 19ms 0.2ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.6ms 2.3MB 27ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.6ms 1.8MB 30ms 0ms g++ 11.4.0
ruby 2-m.rb 308ms 6.2ms 310.0MB 540ms 117ms truffleruby 24.2.0
ruby 2.rb 1062ms 3.2ms 13.5MB 1047ms 3ms ruby/yjit 3.4.2
ruby 2.rb 2806ms 75ms 12.9MB 2787ms 3ms ruby 3.4.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 489ms 5.4ms 7.3MB 477ms 0ms g++ 11.4.0
cpp 1.cpp 528ms 1.2ms 7.8MB 520ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 1.rb timeout 0.0ms 325.4MB 4860ms 130ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 327.0MB 4853ms 137ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 703.0MB 5090ms 140ms truffleruby 24.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 120ms 1.2ms 3.6MB 110ms 0ms g++ 11.4.0
cpp 1.cpp 132ms 1.5ms 4.1MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 1.rb 1725ms 19ms 476.7MB 2387ms 160ms truffleruby 24.2.0
ruby 1.rb 3412ms 46ms 131.8MB 3323ms 73ms ruby/yjit 3.4.2
ruby 1.rb 4494ms 36ms 131.1MB 4403ms 77ms ruby 3.4.2

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 470ms 3.9ms 3.4MB 1817ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 483ms 0.5ms 2.1MB 1883ms 0ms g++ 11.4.0
cpp 6-im.cpp 927ms 14ms 3.5MB 3627ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 930ms 9.8ms 2.1MB 3640ms 0ms g++ 11.4.0
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 7ms ruby/yjit 3.4.2
ruby 4.rb timeout 0.0ms 434.6MB 5167ms 233ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 124ms 1.8ms 3.6MB 457ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 127ms 1.2ms 2.0MB 477ms 0ms g++ 11.4.0
cpp 6-im.cpp 237ms 0.4ms 3.4MB 903ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 239ms 0.7ms 2.0MB 917ms 0ms g++ 11.4.0
ruby 4.rb 4868ms 23ms 439.6MB 5153ms 217ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 13.0MB 4987ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.2

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 37ms 1.6ms 3.4MB 110ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 39ms 0.2ms 2.0MB 130ms 0ms g++ 11.4.0
cpp 6-im.cpp 65ms 0.1ms 3.5MB 227ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 68ms 0.6ms 2.0MB 243ms 0ms g++ 11.4.0
ruby 4.rb 1435ms 5.1ms 375.6MB 1770ms 137ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.8MB 4980ms 3ms ruby/yjit 3.4.2