Programming Language and compiler
Benchmarks

C++ VS Ruby benchmarks

Current benchmark data was generated on Tue Mar 25 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 400ms 5.5ms 2.6MB 1540ms 0ms g++ 11.4.0
cpp 1-im.cpp 409ms 4.1ms 4.0MB 1590ms 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 41ms 1.5ms 2.6MB 133ms 0ms g++ 11.4.0
cpp 1-im.cpp 42ms 0.4ms 4.0MB 140ms 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 1.5ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 1.rb 38ms 1.6ms 142.2MB 14ms 28ms truffleruby 24.2.0
ruby 1.rb 52ms 1.2ms 12.9MB 38ms 4ms ruby 3.4.2
ruby 1.rb 54ms 2.1ms 13.0MB 40ms 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 0.1ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 171ms 0.5ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 315ms 0.8ms 2.3MB 307ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 316ms 0.4ms 1.8MB 307ms 0ms g++ 11.4.0
ruby 2.rb 846ms 5.3ms 311.6MB 1087ms 127ms truffleruby 24.2.0
ruby 2.rb timeout 0.0ms 12.9MB 4983ms 7ms ruby 3.4.2
ruby 2.rb timeout 0.0ms 13.5MB 4987ms 0ms 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 0.7ms 1.9MB 30ms 0ms g++ 11.4.0
cpp 1.cpp 34ms 0.7ms 2.3MB 30ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 2-m.rb 313ms 8.1ms 310.0MB 540ms 123ms truffleruby 24.2.0
ruby 2.rb 1065ms 2.9ms 13.5MB 1043ms 0ms ruby/yjit 3.4.2
ruby 2.rb 2836ms 76ms 12.9MB 2817ms 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 485ms 2.1ms 7.3MB 477ms 0ms g++ 11.4.0
cpp 1.cpp 531ms 3.5ms 7.8MB 523ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 1.rb timeout 0.0ms 325.4MB 4847ms 137ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 327.0MB 4840ms 143ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 707.0MB 5073ms 153ms truffleruby 24.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 119ms 0.4ms 3.6MB 110ms 0ms g++ 11.4.0
cpp 1.cpp 133ms 1.4ms 4.1MB 123ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 1-m.rb 1762ms 23ms 498.0MB 2533ms 183ms truffleruby 24.2.0
ruby 1.rb 3732ms 397ms 131.8MB 3640ms 77ms ruby/yjit 3.4.2
ruby 1.rb 4536ms 21ms 131.1MB 4440ms 80ms 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 474ms 9.5ms 3.5MB 1827ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 484ms 1.5ms 2.1MB 1883ms 0ms g++ 11.4.0
cpp 6-im.cpp 927ms 9.1ms 2.1MB 3633ms 0ms g++ 11.4.0
cpp 6-im.cpp 928ms 16ms 3.6MB 3630ms 0ms clang++ 14.0.0-1ubuntu1.1
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.2
ruby 4.rb timeout 0.0ms 454.8MB 5133ms 270ms 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 0.6ms 3.4MB 460ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 130ms 0.6ms 2.0MB 490ms 0ms g++ 11.4.0
cpp 6-im.cpp 238ms 0.5ms 3.4MB 903ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 240ms 2.0ms 2.1MB 917ms 0ms g++ 11.4.0
ruby 4.rb 4888ms 24ms 442.4MB 5167ms 227ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 3ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 0ms 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 40ms 0.2ms 2.0MB 130ms 0ms g++ 11.4.0
cpp 8-m.cpp 41ms 9.9ms 3.4MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 65ms 0.7ms 3.4MB 230ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 67ms 0.4ms 2.1MB 240ms 0ms g++ 11.4.0
ruby 4.rb 1433ms 18ms 370.1MB 1793ms 130ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 13.0MB 4980ms 7ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.8MB 4980ms 7ms ruby/yjit 3.4.2