Programming Language and compiler
Benchmarks

Swift VS Ruby benchmarks

Current benchmark data was generated on Thu May 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2603ms 10ms 53.8MB 2570ms 20ms swift 6.1.0
ruby 1.rb 4679ms 84ms 150.6MB 4570ms 97ms ruby/yjit 3.4.3
ruby 1.rb timeout 0.0ms 70.0MB 4950ms 40ms ruby 3.4.3
ruby 1.rb timeout 0.0ms 780.8MB 6557ms 723ms truffleruby 24.2.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 236ms 1.2ms 11.8MB 220ms 0ms swift 6.1.0
ruby 1.rb 481ms 3.0ms 20.3MB 460ms 10ms ruby/yjit 3.4.3
ruby 1-m.rb 537ms 62ms 414.1MB 1070ms 150ms truffleruby 24.2.1
ruby 1.rb 931ms 3.2ms 19.5MB 910ms 7ms ruby 3.4.3

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2477ms 9.7ms 5.5MB 2470ms 0ms swift 6.1.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 213ms 1.6ms 5.5MB 203ms 0ms swift 6.1.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3-m.swift 149ms 1.4ms 20.9MB 430ms 7ms swift 6.1.0
ruby 6.rb 2030ms 11ms 23.0MB 2007ms 10ms ruby/yjit 3.4.3
ruby 6-m.rb 2048ms 68ms 387.2MB 5343ms 347ms truffleruby 24.2.1
ruby 6.rb 3729ms 21ms 22.4MB 3707ms 10ms ruby 3.4.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3.swift 39ms 0.2ms 14.4MB 40ms 0ms swift 6.1.0
ruby 6.rb 257ms 3.2ms 15.0MB 240ms 7ms ruby/yjit 3.4.3
ruby 6.rb 431ms 3.1ms 14.4MB 410ms 7ms ruby 3.4.3
ruby 6-m.rb 771ms 87ms 365.8MB 1910ms 180ms truffleruby 24.2.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2.4ms 0.3ms 5.8MB 0ms 0ms swift 6.1.0
ruby 1.rb 34ms 0.6ms 140.7MB 12ms 24ms truffleruby 24.2.1
ruby 1.rb 50ms 0.5ms 13.0MB 36ms 4ms ruby/yjit 3.4.3
ruby 1.rb 52ms 1.7ms 12.8MB 38ms 0ms ruby 3.4.3

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 2-m.swift 1342ms 9.5ms 74.3MB 4893ms 33ms swift 6.1.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 2-m.swift 254ms 1.0ms 59.8MB 660ms 37ms swift 6.1.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 345ms 0.9ms 10.0MB 337ms 0ms swift 6.1.0
ruby 2.rb 820ms 8.8ms 310.7MB 1043ms 117ms truffleruby 24.2.1
ruby 2.rb timeout 0.0ms 12.8MB 4987ms 3ms ruby 3.4.3
ruby 2.rb timeout 0.0ms 13.5MB 4983ms 0ms ruby/yjit 3.4.3

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 38ms 0.6ms 10.1MB 30ms 0ms swift 6.1.0
ruby 2-m.rb 312ms 9.0ms 309.6MB 540ms 117ms truffleruby 24.2.1
ruby 2.rb 1025ms 2.6ms 13.5MB 1010ms 0ms ruby/yjit 3.4.3
ruby 2.rb 2856ms 28ms 12.8MB 2840ms 0ms ruby 3.4.3

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb timeout 0.0ms 130.2MB 4847ms 140ms ruby 3.4.3
ruby 1.rb timeout 0.0ms 130.7MB 4873ms 113ms ruby/yjit 3.4.3
ruby 1.rb timeout 0.0ms 461.2MB 13320ms 417ms truffleruby 24.2.1
swift 1.swift timeout 0.0ms 7.1MB 4933ms 50ms swift 6.1.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1-m.rb 1612ms 177ms 390.8MB 4260ms 207ms truffleruby 24.2.1
ruby 1.rb 1803ms 20ms 131.0MB 1673ms 117ms ruby/yjit 3.4.3
ruby 1.rb 1805ms 5.0ms 130.1MB 1683ms 103ms ruby 3.4.3
swift 1.swift 1944ms 18ms 7.0MB 1930ms 0ms swift 6.1.0