Programming Language and compiler
Benchmarks

Ruby VS C# benchmarks

Current benchmark data was generated on Mon Mar 31 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
csharp 1.cs 909ms 8.6ms 192.3MB 903ms 150ms dotnet 9.0.202
csharp 1.cs 978ms 14ms 172.2MB 970ms 130ms dotnet/aot 9.0.202
csharp 1.cs 1684ms 30ms 107.4MB 1873ms 210ms mono 6.12.0
ruby 1.rb 4874ms 16ms 109.4MB 4770ms 90ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 70.1MB 4937ms 43ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 793.7MB 6597ms 650ms truffleruby 24.2.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 120ms 7.8ms 31.5MB 93ms 27ms dotnet/aot 9.0.202
csharp 1.cs 142ms 0.8ms 44.3MB 120ms 13ms mono 6.12.0
csharp 1.cs 190ms 1.3ms 50.5MB 147ms 40ms dotnet 9.0.202
ruby 1.rb 494ms 2.7ms 20.3MB 470ms 10ms ruby/yjit 3.4.2
ruby 1-m.rb 575ms 60ms 422.2MB 1147ms 167ms truffleruby 24.2.0
ruby 1.rb 937ms 6.7ms 19.6MB 910ms 13ms ruby 3.4.2

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 1478ms 22ms 63.8MB 1397ms 67ms ruby/yjit 3.4.2
ruby 1.rb 1855ms 2.6ms 63.1MB 1780ms 60ms ruby 3.4.2
csharp 1-m.cs 2152ms 52ms 50.1MB 7543ms 63ms dotnet/aot 9.0.202
csharp 1-m.cs 2722ms 77ms 73.0MB 8447ms 103ms dotnet 9.0.202
ruby 1.rb timeout 0.0ms 347.0MB 4763ms 1433ms truffleruby 24.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 154ms 11ms 18.7MB 453ms 13ms dotnet/aot 9.0.202
ruby 1.rb 159ms 1.0ms 25.6MB 127ms 17ms ruby/yjit 3.4.2
ruby 1.rb 185ms 1.3ms 25.1MB 153ms 17ms ruby 3.4.2
csharp 1-m.cs 288ms 24ms 37.3MB 797ms 23ms dotnet 9.0.202
ruby 1.rb timeout 0.0ms 353.2MB 4600ms 1553ms truffleruby 24.2.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 125ms 3.8ms 22.3MB 357ms 80ms dotnet/aot 9.0.202
csharp 5-m.cs 226ms 19ms 44.3MB 470ms 120ms dotnet 9.0.202
csharp 5-m.cs 231ms 6.2ms 46.4MB 667ms 87ms mono 6.12.0
ruby 6.rb 2060ms 10ms 23.0MB 2030ms 13ms ruby/yjit 3.4.2
ruby 6-m.rb 2165ms 97ms 405.7MB 5593ms 363ms truffleruby 24.2.0
ruby 6.rb 3848ms 36ms 22.5MB 3820ms 10ms ruby 3.4.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 24ms 0.7ms 15.6MB 30ms 10ms dotnet/aot 9.0.202
csharp 5-m.cs 64ms 5.1ms 37.0MB 87ms 17ms dotnet 9.0.202
csharp 5-m.cs 72ms 1.6ms 29.1MB 107ms 17ms mono 6.12.0
ruby 6.rb 266ms 4.3ms 15.0MB 247ms 10ms ruby/yjit 3.4.2
ruby 6.rb 437ms 2.4ms 14.5MB 420ms 7ms ruby 3.4.2
ruby 6-m.rb 815ms 10ms 363.4MB 2020ms 177ms truffleruby 24.2.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 7.6ms 2.7ms 9.6MB 0ms 0ms dotnet/aot 9.0.202
csharp 1.cs 32ms 0.6ms 21.3MB 20ms 0ms mono 6.12.0
ruby 1.rb 35ms 0.4ms 142.2MB 14ms 28ms truffleruby 24.2.0
csharp 1.cs 45ms 3.1ms 26.3MB 22ms 8ms dotnet 9.0.202
ruby 1.rb 52ms 3.5ms 12.9MB 34ms 2ms ruby 3.4.2
ruby 1.rb 53ms 0.9ms 13.0MB 34ms 6ms ruby/yjit 3.4.2

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 252ms 3.6ms 29.1MB 220ms 20ms ruby 3.4.2
ruby 1.rb 256ms 3.5ms 28.4MB 227ms 17ms ruby/yjit 3.4.2
csharp 2.cs 327ms 17ms 70.9MB 280ms 37ms dotnet 9.0.202
csharp 1.cs 822ms 63ms 143.8MB 827ms 77ms dotnet 9.0.202
ruby 1-m.rb 4493ms 172ms 518.1MB 11833ms 350ms truffleruby 24.2.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 1536ms 69ms 232.4MB 1720ms 90ms dotnet 9.0.202
ruby 1.rb 2091ms 5.7ms 132.7MB 2000ms 77ms ruby 3.4.2
ruby 1.rb 2116ms 29ms 135.1MB 2017ms 83ms ruby/yjit 3.4.2
csharp 1.cs 2705ms 49ms 779.0MB 3220ms 467ms dotnet 9.0.202
ruby 1.rb timeout 0.0ms 495.0MB 13197ms 370ms truffleruby 24.2.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 95ms 1.1ms 9.8MB 83ms 0ms dotnet/aot 9.0.202
csharp 2.cs 149ms 1.5ms 23.2MB 140ms 0ms mono 6.12.0
csharp 2.cs 251ms 4.0ms 29.6MB 233ms 10ms dotnet 9.0.202
ruby 1.rb 338ms 2.7ms 13.5MB 320ms 7ms ruby/yjit 3.4.2
ruby 1.rb 534ms 7.9ms 13.0MB 517ms 7ms ruby 3.4.2
ruby 1-m.rb 679ms 33ms 375.8MB 1217ms 147ms truffleruby 24.2.0
csharp 1.cs 1037ms 4.4ms 13.3MB 1023ms 7ms dotnet/aot 9.0.202
csharp 1.cs 1284ms 17ms 32.9MB 1280ms 3ms dotnet 9.0.202
csharp 1.cs 3333ms 39ms 49.6MB 3290ms 30ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 273ms 1.7ms 9.9MB 260ms 0ms dotnet/aot 9.0.202
csharp 2.cs 360ms 3.5ms 22.8MB 343ms 0ms mono 6.12.0
csharp 2.cs 403ms 4.6ms 29.3MB 383ms 7ms dotnet 9.0.202
ruby 1.rb 880ms 3.0ms 13.5MB 857ms 7ms ruby/yjit 3.4.2
ruby 1-m.rb 1252ms 51ms 416.2MB 1803ms 183ms truffleruby 24.2.0
ruby 1.rb 1490ms 12ms 13.0MB 1470ms 7ms ruby 3.4.2
csharp 1.cs 3112ms 26ms 13.3MB 3087ms 10ms dotnet/aot 9.0.202
csharp 1.cs 3600ms 76ms 32.9MB 3573ms 20ms dotnet 9.0.202
csharp 1.cs timeout 0.0ms 45.8MB 4947ms 43ms mono 6.12.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 53ms 0.6ms 9.6MB 40ms 0ms dotnet/aot 9.0.202
csharp 2.cs 93ms 2.5ms 22.7MB 80ms 0ms mono 6.12.0
csharp 2.cs 171ms 0.3ms 29.1MB 143ms 7ms dotnet 9.0.202
ruby 1.rb 196ms 2.7ms 13.5MB 177ms 7ms ruby/yjit 3.4.2
ruby 1.rb 292ms 5.2ms 12.9MB 273ms 0ms ruby 3.4.2
ruby 1-m.rb 513ms 36ms 360.4MB 1000ms 140ms truffleruby 24.2.0
csharp 1.cs 1619ms 3.8ms 32.5MB 1610ms 10ms dotnet 9.0.202
csharp 1.cs 1803ms 2.1ms 12.9MB 1790ms 0ms dotnet/aot 9.0.202
csharp 1.cs 1821ms 8.6ms 28.8MB 1803ms 0ms mono 6.12.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 552ms 23ms 120.8MB 497ms 93ms dotnet/aot 9.0.202
csharp 1.cs 621ms 12ms 154.1MB 560ms 130ms dotnet/aot 9.0.202
csharp 2.cs 668ms 39ms 137.8MB 610ms 100ms dotnet 9.0.202
csharp 1.cs 725ms 42ms 168.6MB 643ms 143ms dotnet 9.0.202
csharp 1.cs 1248ms 3.8ms 142.4MB 1437ms 147ms mono 6.12.0
ruby 1-m.rb 4071ms 251ms 628.9MB 10250ms 363ms truffleruby 24.2.0
ruby 1.rb timeout 0.0ms 94.3MB 4930ms 50ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 94.8MB 4937ms 50ms ruby/yjit 3.4.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 135ms 4.1ms 58.8MB 110ms 30ms dotnet/aot 9.0.202
csharp 1.cs 152ms 3.0ms 72.5MB 117ms 50ms dotnet/aot 9.0.202
csharp 2.cs 257ms 7.3ms 72.8MB 220ms 40ms dotnet 9.0.202
csharp 1.cs 258ms 6.4ms 67.4MB 230ms 33ms mono 6.12.0
csharp 1.cs 315ms 37ms 91.1MB 237ms 63ms dotnet 9.0.202
ruby 1-m.rb 2113ms 104ms 582.3MB 5393ms 277ms truffleruby 24.2.0
ruby 1.rb 3439ms 28ms 38.3MB 3403ms 23ms ruby/yjit 3.4.2
ruby 1.rb 4410ms 17ms 37.8MB 4373ms 23ms ruby 3.4.2

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 358ms 2.8ms 27.6MB 340ms 10ms dotnet 9.0.202
csharp 8.cs 376ms 6.6ms 9.8MB 363ms 0ms dotnet/aot 9.0.202
csharp 8.cs 419ms 3.2ms 27.5MB 400ms 7ms dotnet 9.0.202
ruby 2.rb 830ms 8.7ms 322.7MB 1090ms 113ms truffleruby 24.2.0
csharp 8.cs 1245ms 4.0ms 22.1MB 1227ms 0ms mono 6.12.0
ruby 2.rb timeout 0.0ms 12.9MB 4987ms 0ms ruby 3.4.2
ruby 2.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 8.cs 45ms 1.0ms 9.9MB 30ms 0ms dotnet/aot 9.0.202
csharp 9.cs 93ms 3.1ms 27.9MB 73ms 7ms dotnet 9.0.202
csharp 8.cs 93ms 2.6ms 27.5MB 73ms 7ms dotnet 9.0.202
csharp 8.cs 161ms 1.5ms 22.8MB 150ms 0ms mono 6.12.0
ruby 2-m.rb 310ms 2.6ms 310.1MB 543ms 113ms truffleruby 24.2.0
ruby 2.rb 1066ms 0.5ms 13.5MB 1047ms 3ms ruby/yjit 3.4.2
ruby 2.rb 2789ms 66ms 12.9MB 2773ms 0ms ruby 3.4.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 292ms 3.4ms 78.8MB 270ms 10ms dotnet/aot 9.0.202
csharp 1.cs 323ms 2.9ms 96.2MB 300ms 13ms dotnet 9.0.202
csharp 2.cs 392ms 2.6ms 35.6MB 370ms 10ms dotnet 9.0.202
csharp 2.cs 423ms 4.5ms 17.6MB 410ms 0ms dotnet/aot 9.0.202
csharp 1.cs 533ms 6.3ms 84.0MB 513ms 7ms mono 6.12.0
csharp 2.cs 1870ms 2.9ms 29.8MB 1853ms 0ms mono 6.12.0
ruby 1.rb timeout 0.0ms 325.4MB 4847ms 140ms 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 709.5MB 5073ms 150ms truffleruby 24.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 64ms 1.5ms 25.1MB 50ms 3ms dotnet/aot 9.0.202
csharp 1.cs 100ms 4.1ms 42.5MB 80ms 10ms dotnet 9.0.202
csharp 2.cs 106ms 0.6ms 12.0MB 97ms 0ms dotnet/aot 9.0.202
csharp 2.cs 127ms 5.4ms 30.0MB 103ms 10ms dotnet 9.0.202
csharp 1.cs 144ms 2.3ms 38.3MB 130ms 0ms mono 6.12.0
csharp 2.cs 484ms 8.9ms 21.1MB 470ms 0ms mono 6.12.0
ruby 1-m.rb 1735ms 26ms 487.2MB 2477ms 167ms truffleruby 24.2.0
ruby 1.rb 3439ms 35ms 131.8MB 3347ms 77ms ruby/yjit 3.4.2
ruby 1.rb 4550ms 60ms 131.1MB 4463ms 77ms ruby 3.4.2

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3216ms 8.5ms 13.9MB 3117ms 97ms dotnet/aot 9.0.202
csharp 1.cs 3599ms 79ms 38.3MB 3620ms 123ms dotnet 9.0.202
ruby 1.rb timeout 0.0ms 46.7MB 4923ms 67ms ruby 3.4.2
ruby 1.rb timeout 0.0ms 126.8MB 4890ms 100ms ruby/yjit 3.4.2
ruby 1.rb timeout 0.0ms 457.8MB 13330ms 427ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 753ms 3.9ms 13.4MB 720ms 23ms dotnet/aot 9.0.202
csharp 1.cs 980ms 8.6ms 37.5MB 1067ms 33ms dotnet 9.0.202
ruby 1-m.rb 1582ms 157ms 399.4MB 4173ms 207ms truffleruby 24.2.0
ruby 1.rb 1703ms 3.1ms 46.2MB 1657ms 33ms ruby 3.4.2
ruby 1.rb 1706ms 60ms 127.5MB 1643ms 50ms ruby/yjit 3.4.2

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1841ms 7.6ms 10.5MB 7173ms 10ms dotnet/aot 9.0.202
csharp 3-m.cs 1930ms 5.0ms 30.1MB 7370ms 13ms dotnet 9.0.202
csharp 3-m.cs 4705ms 144ms 25.6MB 17887ms 20ms mono 6.12.0
ruby 4.rb timeout 0.0ms 13.0MB 4983ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.5MB 4980ms 3ms ruby/yjit 3.4.2
ruby 4.rb timeout 0.0ms 463.4MB 5177ms 250ms truffleruby 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 492ms 25ms 10.5MB 1780ms 7ms dotnet/aot 9.0.202
csharp 3-m.cs 652ms 40ms 29.8MB 1707ms 13ms dotnet 9.0.202
csharp 3-m.cs 1237ms 39ms 27.5MB 4640ms 13ms mono 6.12.0
ruby 4.rb 4892ms 24ms 472.1MB 5177ms 213ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 13.0MB 4980ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 0ms ruby/yjit 3.4.2

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 126ms 1.2ms 10.4MB 443ms 0ms dotnet/aot 9.0.202
csharp 3-m.cs 251ms 4.1ms 28.6MB 460ms 13ms dotnet 9.0.202
csharp 3-m.cs 348ms 0.4ms 25.2MB 1173ms 13ms mono 6.12.0
ruby 4.rb 1453ms 12ms 389.8MB 1777ms 143ms truffleruby 24.2.0
ruby 4.rb timeout 0.0ms 13.0MB 4980ms 0ms ruby 3.4.2
ruby 4.rb timeout 0.0ms 13.8MB 4983ms 0ms ruby/yjit 3.4.2