Programming Language and compiler
Benchmarks

Ruby VS C# 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
csharp 1.cs 943ms 22ms 185.3MB 937ms 150ms dotnet 9.0.203
csharp 1.cs 955ms 17ms 188.9MB 957ms 143ms dotnet/aot 9.0.203
csharp 1.cs 1699ms 20ms 101.5MB 1897ms 217ms mono 6.12.0
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
csharp 1.cs 123ms 5.1ms 31.9MB 87ms 33ms dotnet/aot 9.0.203
csharp 1.cs 140ms 0.7ms 44.1MB 117ms 13ms mono 6.12.0
csharp 1.cs 206ms 6.4ms 50.4MB 157ms 37ms dotnet 9.0.203
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

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 1461ms 14ms 63.8MB 1383ms 63ms ruby/yjit 3.4.3
ruby 1.rb 1891ms 53ms 63.0MB 1813ms 63ms ruby 3.4.3
csharp 1-m.cs 2151ms 190ms 51.9MB 7533ms 73ms dotnet/aot 9.0.203
csharp 1-m.cs 2664ms 219ms 74.3MB 8140ms 107ms dotnet 9.0.203
ruby 1.rb timeout 0.0ms 342.0MB 4683ms 1473ms truffleruby 24.2.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 156ms 2.7ms 25.8MB 127ms 13ms ruby/yjit 3.4.3
csharp 1-m.cs 167ms 15ms 19.5MB 487ms 10ms dotnet/aot 9.0.203
ruby 1.rb 181ms 2.9ms 25.0MB 153ms 13ms ruby 3.4.3
csharp 1-m.cs 275ms 8.4ms 36.8MB 787ms 20ms dotnet 9.0.203
ruby 1.rb timeout 0.0ms 351.9MB 4730ms 1453ms truffleruby 24.2.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 114ms 1.5ms 22.1MB 350ms 57ms dotnet/aot 9.0.203
csharp 5-m.cs 190ms 2.0ms 38.3MB 467ms 123ms dotnet 9.0.203
csharp 5-m.cs 241ms 15ms 51.6MB 663ms 123ms mono 6.12.0
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
csharp 5-m.cs 24ms 1.2ms 15.6MB 33ms 13ms dotnet/aot 9.0.203
csharp 5-m.cs 65ms 3.9ms 37.4MB 87ms 17ms dotnet 9.0.203
csharp 5-m.cs 71ms 1.9ms 30.8MB 100ms 27ms mono 6.12.0
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
csharp 1.cs 10ms 5.6ms 7.6MB 0ms 0ms dotnet/aot 9.0.203
csharp 1.cs 31ms 1.0ms 21.4MB 20ms 0ms mono 6.12.0
csharp 1.cs 34ms 0.4ms 26.0MB 20ms 2ms dotnet 9.0.203
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

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 247ms 2.4ms 29.9MB 220ms 10ms ruby/yjit 3.4.3
ruby 1.rb 249ms 4.9ms 28.5MB 217ms 17ms ruby 3.4.3
csharp 2.cs 306ms 5.5ms 68.9MB 267ms 30ms dotnet 9.0.203
csharp 1.cs 761ms 85ms 143.8MB 767ms 83ms dotnet 9.0.203
ruby 1-m.rb 4260ms 110ms 489.7MB 11213ms 330ms truffleruby 24.2.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 1495ms 5.8ms 233.2MB 1653ms 87ms dotnet 9.0.203
ruby 1.rb 2070ms 4.8ms 135.1MB 1983ms 73ms ruby/yjit 3.4.3
ruby 1.rb 2088ms 5.1ms 134.1MB 2000ms 77ms ruby 3.4.3
csharp 1.cs 2680ms 46ms 731.8MB 3250ms 450ms dotnet 9.0.203
ruby 1.rb timeout 0.0ms 649.0MB 13303ms 360ms truffleruby 24.2.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 94ms 1.7ms 9.8MB 80ms 0ms dotnet/aot 9.0.203
csharp 2.cs 151ms 1.0ms 23.2MB 133ms 0ms mono 6.12.0
csharp 2.cs 256ms 3.5ms 29.5MB 240ms 7ms dotnet 9.0.203
ruby 1.rb 336ms 3.0ms 13.5MB 320ms 7ms ruby/yjit 3.4.3
ruby 1.rb 528ms 0.6ms 12.9MB 510ms 0ms ruby 3.4.3
ruby 1-m.rb 649ms 12ms 361.2MB 1150ms 143ms truffleruby 24.2.1
csharp 1.cs 1044ms 8.4ms 13.0MB 1027ms 3ms dotnet/aot 9.0.203
csharp 1.cs 1298ms 21ms 33.0MB 1283ms 13ms dotnet 9.0.203
csharp 1.cs 3310ms 13ms 45.4MB 3267ms 33ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 260ms 1.6ms 9.8MB 250ms 0ms dotnet/aot 9.0.203
csharp 2.cs 361ms 6.0ms 23.0MB 343ms 0ms mono 6.12.0
csharp 2.cs 404ms 3.1ms 29.4MB 390ms 7ms dotnet 9.0.203
ruby 1.rb 891ms 5.7ms 13.5MB 873ms 3ms ruby/yjit 3.4.3
ruby 1-m.rb 1218ms 28ms 399.4MB 1703ms 157ms truffleruby 24.2.1
ruby 1.rb 1472ms 6.0ms 12.9MB 1453ms 3ms ruby 3.4.3
csharp 1.cs 3097ms 9.3ms 13.1MB 3073ms 13ms dotnet/aot 9.0.203
csharp 1.cs 3653ms 102ms 32.4MB 3643ms 17ms dotnet 9.0.203
csharp 1.cs timeout 0.0ms 43.6MB 4940ms 50ms mono 6.12.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 50ms 1.8ms 9.6MB 40ms 0ms dotnet/aot 9.0.203
csharp 2.cs 94ms 2.7ms 22.8MB 80ms 0ms mono 6.12.0
csharp 2.cs 168ms 1.0ms 29.3MB 150ms 3ms dotnet 9.0.203
ruby 1.rb 194ms 4.2ms 13.4MB 177ms 7ms ruby/yjit 3.4.3
ruby 1.rb 288ms 3.8ms 12.8MB 270ms 3ms ruby 3.4.3
ruby 1-m.rb 516ms 39ms 354.9MB 993ms 137ms truffleruby 24.2.1
csharp 1.cs 1616ms 2.4ms 32.8MB 1610ms 13ms dotnet 9.0.203
csharp 1.cs 1820ms 6.9ms 28.8MB 1803ms 0ms mono 6.12.0
csharp 1.cs 1826ms 2.7ms 12.9MB 1813ms 0ms dotnet/aot 9.0.203

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 542ms 21ms 121.4MB 490ms 90ms dotnet/aot 9.0.203
csharp 1.cs 603ms 8.7ms 143.3MB 557ms 117ms dotnet/aot 9.0.203
csharp 2.cs 678ms 16ms 136.3MB 627ms 100ms dotnet 9.0.203
csharp 1.cs 761ms 17ms 164.3MB 697ms 130ms dotnet 9.0.203
csharp 1.cs 1306ms 19ms 140.5MB 1507ms 173ms mono 6.12.0
ruby 1-m.rb 4011ms 237ms 549.1MB 10167ms 373ms truffleruby 24.2.1
ruby 1.rb timeout 0.0ms 93.5MB 4940ms 50ms ruby 3.4.3
ruby 1.rb timeout 0.0ms 97.2MB 4940ms 50ms ruby/yjit 3.4.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 135ms 2.4ms 57.2MB 110ms 30ms dotnet/aot 9.0.203
csharp 1.cs 157ms 2.1ms 74.5MB 120ms 53ms dotnet/aot 9.0.203
csharp 2.cs 258ms 7.0ms 74.8MB 223ms 40ms dotnet 9.0.203
csharp 1.cs 258ms 0.7ms 69.4MB 233ms 30ms mono 6.12.0
csharp 1.cs 281ms 5.4ms 89.5MB 237ms 57ms dotnet 9.0.203
ruby 1-m.rb 2063ms 65ms 556.4MB 5307ms 257ms truffleruby 24.2.1
ruby 1.rb 3317ms 15ms 38.3MB 3287ms 17ms ruby/yjit 3.4.3
ruby 1.rb 4340ms 9.9ms 37.6MB 4307ms 20ms ruby 3.4.3

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 358ms 2.8ms 28.0MB 340ms 7ms dotnet 9.0.203
csharp 8.cs 370ms 3.1ms 9.9MB 360ms 0ms dotnet/aot 9.0.203
csharp 8.cs 423ms 3.6ms 27.5MB 400ms 7ms dotnet 9.0.203
ruby 2.rb 820ms 8.8ms 310.7MB 1043ms 117ms truffleruby 24.2.1
csharp 8.cs 1250ms 5.1ms 20.4MB 1237ms 0ms mono 6.12.0
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
csharp 8.cs 46ms 1.1ms 9.9MB 37ms 0ms dotnet/aot 9.0.203
csharp 9.cs 90ms 1.4ms 27.6MB 73ms 3ms dotnet 9.0.203
csharp 8.cs 94ms 1.2ms 27.5MB 80ms 3ms dotnet 9.0.203
csharp 8.cs 164ms 3.9ms 22.8MB 150ms 0ms mono 6.12.0
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

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 310ms 3.9ms 78.9MB 290ms 10ms dotnet/aot 9.0.203
csharp 1.cs 355ms 2.4ms 96.3MB 330ms 13ms dotnet 9.0.203
csharp 2.cs 393ms 1.8ms 17.4MB 377ms 0ms dotnet/aot 9.0.203
csharp 2.cs 397ms 1.9ms 35.6MB 380ms 7ms dotnet 9.0.203
csharp 1.cs 550ms 8.4ms 84.0MB 527ms 10ms mono 6.12.0
csharp 2.cs 1862ms 2.9ms 27.5MB 1847ms 0ms mono 6.12.0
ruby 1.rb timeout 0.0ms 325.3MB 4853ms 133ms ruby 3.4.3
ruby 1.rb timeout 0.0ms 327.0MB 4860ms 130ms ruby/yjit 3.4.3
ruby 1.rb timeout 0.0ms 731.8MB 5057ms 157ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 64ms 3.2ms 24.8MB 50ms 7ms dotnet/aot 9.0.203
csharp 1.cs 100ms 1.2ms 42.3MB 80ms 7ms dotnet 9.0.203
csharp 2.cs 101ms 1.3ms 11.9MB 90ms 0ms dotnet/aot 9.0.203
csharp 2.cs 127ms 1.0ms 30.1MB 103ms 10ms dotnet 9.0.203
csharp 1.cs 146ms 1.7ms 38.2MB 130ms 7ms mono 6.12.0
csharp 2.cs 483ms 5.4ms 23.0MB 470ms 0ms mono 6.12.0
ruby 1-m.rb 1692ms 8.3ms 475.4MB 2483ms 163ms truffleruby 24.2.1
ruby 1.rb 3437ms 77ms 131.8MB 3337ms 83ms ruby/yjit 3.4.3
ruby 1.rb 4403ms 32ms 131.0MB 4307ms 80ms ruby 3.4.3

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3245ms 17ms 14.0MB 3153ms 90ms dotnet/aot 9.0.203
csharp 1.cs 3618ms 42ms 38.1MB 3630ms 113ms dotnet 9.0.203
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

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 761ms 5.1ms 13.5MB 720ms 30ms dotnet/aot 9.0.203
csharp 1.cs 997ms 13ms 37.9MB 1083ms 40ms dotnet 9.0.203
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

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1857ms 0.8ms 10.5MB 7263ms 10ms dotnet/aot 9.0.203
csharp 3-m.cs 1927ms 7.1ms 30.0MB 7350ms 17ms dotnet 9.0.203
csharp 3-m.cs 4664ms 7.4ms 25.5MB 18030ms 17ms mono 6.12.0
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 3ms ruby 3.4.3
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.3
ruby 4.rb timeout 0.0ms 412.4MB 5180ms 223ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 473ms 1.1ms 10.4MB 1810ms 0ms dotnet/aot 9.0.203
csharp 3-m.cs 536ms 6.8ms 29.8MB 1880ms 10ms dotnet 9.0.203
csharp 3-m.cs 1213ms 6.5ms 25.6MB 4547ms 10ms mono 6.12.0
ruby 4.rb 4838ms 9.1ms 424.1MB 5130ms 203ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 7ms ruby 3.4.3
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.3

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 127ms 1.6ms 10.5MB 450ms 0ms dotnet/aot 9.0.203
csharp 3-m.cs 181ms 4.2ms 28.5MB 503ms 10ms dotnet 9.0.203
csharp 3-m.cs 353ms 13ms 25.5MB 1193ms 10ms mono 6.12.0
ruby 4.rb 1417ms 19ms 373.9MB 1763ms 130ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 7ms ruby 3.4.3
ruby 4.rb timeout 0.0ms 13.8MB 4980ms 3ms ruby/yjit 3.4.3