Programming Language and compiler
Benchmarks

Kotlin VS C# benchmarks

Current benchmark data was generated on Sat Nov 16 2024, 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
kotlin 1.kt 475ms 17ms 579.4MB 547ms 97ms kotlin/jvm 21
csharp 1.cs 942ms 23ms 178.5MB 930ms 140ms dotnet/aot 9.0.100
csharp 1.cs 1121ms 32ms 206.4MB 1067ms 147ms dotnet 9.0.100
csharp 1.cs 1708ms 66ms 101.6MB 1907ms 207ms mono 6.12.0
kotlin 1-m.kt 3085ms 72ms 252.5MB 5140ms 680ms kotlin/native 1.8.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 102ms 2.5ms 160.0MB 107ms 27ms kotlin/jvm 21
csharp 1.cs 122ms 3.4ms 41.6MB 83ms 27ms dotnet/aot 9.0.100
csharp 1.cs 143ms 1.2ms 46.1MB 117ms 17ms mono 6.12.0
csharp 1.cs 196ms 4.9ms 59.9MB 153ms 33ms dotnet 9.0.100
kotlin 1-m.kt 266ms 3.6ms 32.5MB 413ms 67ms kotlin/native 1.8.21

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 1840ms 308ms 239.6MB 6827ms 123ms kotlin/jvm 21
csharp 1-m.cs 2081ms 50ms 67.5MB 7203ms 80ms dotnet/aot 9.0.100
kotlin 1.kt 2169ms 43ms 219.8MB 3023ms 67ms kotlin/jvm 21
csharp 1-m.cs 2673ms 129ms 80.2MB 9237ms 100ms dotnet 9.0.100
kotlin 1.kt timeout 0.0ms 14.7MB 6043ms 460ms kotlin/native 1.8.21
kotlin 2-m.kt timeout 0.0ms 73.0MB 19093ms 107ms kotlin/native 1.8.21

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 165ms 8.7ms 31.4MB 450ms 13ms dotnet/aot 9.0.100
csharp 1-m.cs 290ms 22ms 49.2MB 813ms 13ms dotnet 9.0.100
kotlin 2-m.kt 395ms 5.2ms 34.8MB 1433ms 40ms kotlin/native 1.8.21
kotlin 1-m.kt 464ms 3.6ms 73.7MB 1043ms 47ms kotlin/jvm 21
kotlin 1.kt 674ms 5.0ms 10.9MB 807ms 53ms kotlin/native 1.8.21
kotlin 2-m.kt 883ms 143ms 98.4MB 3080ms 77ms kotlin/jvm 21

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 2.3ms 0.2ms 4.7MB 0ms 0ms kotlin/native 1.8.21
csharp 1.cs 9.1ms 5.6ms 15.6MB 0ms 0ms dotnet/aot 9.0.100
csharp 1.cs 31ms 0.9ms 23.4MB 20ms 0ms mono 6.12.0
csharp 1.cs 35ms 0.6ms 32.3MB 20ms 6ms dotnet 9.0.100
kotlin 1.kt 55ms 4.0ms 47.5MB 58ms 14ms kotlin/jvm 21

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2-http2.cs 545ms 8.9ms 120.8MB 720ms 160ms dotnet 9.0.100
csharp 2-m.cs 682ms 35ms 144.9MB 717ms 573ms dotnet 9.0.100
csharp 2-http3.cs 706ms 29ms 160.4MB 1150ms 260ms dotnet 9.0.100
csharp 1-m.cs 827ms 39ms 188.6MB 1083ms 753ms dotnet 9.0.100
kotlin 2-m.kt 4705ms 97ms 372.4MB 14620ms 2427ms kotlin/jvm 21
kotlin 1.kt timeout 0.0ms 382.6MB 16320ms 2680ms kotlin/jvm 21

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 422ms 13ms 98.9MB 373ms 207ms dotnet 9.0.100
csharp 1-m.cs 466ms 7.7ms 109.6MB 507ms 263ms dotnet 9.0.100
csharp 2-http2.cs 468ms 11ms 98.5MB 490ms 93ms dotnet 9.0.100
csharp 2-http3.cs 521ms 1.4ms 107.2MB 587ms 127ms dotnet 9.0.100
kotlin 1-m.kt 2187ms 374ms 258.9MB 6430ms 637ms kotlin/jvm 21
kotlin 2-m.kt 2195ms 62ms 249.1MB 5710ms 610ms kotlin/jvm 21

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 306ms 2.5ms 80.6MB 277ms 23ms dotnet 9.0.100
csharp 1.cs 721ms 29ms 151.5MB 760ms 67ms dotnet 9.0.100
kotlin 1-m.kt 893ms 18ms 206.2MB 2427ms 80ms kotlin/jvm 21

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 1581ms 74ms 223.9MB 1753ms 97ms dotnet 9.0.100
kotlin 1-m.kt 2296ms 21ms 773.1MB 4957ms 173ms kotlin/jvm 21
csharp 1.cs 2538ms 31ms 759.0MB 2750ms 410ms dotnet 9.0.100

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 95ms 2.1ms 13.7MB 80ms 3ms dotnet/aot 9.0.100
csharp 2.cs 150ms 1.1ms 23.2MB 140ms 0ms mono 6.12.0
kotlin 1-m.kt 179ms 2.4ms 96.4MB 293ms 27ms kotlin/jvm 21
kotlin 2-m.kt 193ms 1.1ms 103.4MB 407ms 40ms kotlin/jvm 21
csharp 2.cs 249ms 2.0ms 35.6MB 230ms 10ms dotnet 9.0.100
kotlin 2.kt 304ms 3.0ms 7.9MB 427ms 13ms kotlin/native 1.8.21
kotlin 1.kt 515ms 18ms 7.8MB 623ms 3ms kotlin/native 1.8.21
csharp 1.cs 1058ms 2.9ms 16.9MB 1037ms 7ms dotnet/aot 9.0.100
csharp 1.cs 1361ms 146ms 36.7MB 1350ms 10ms dotnet 9.0.100
csharp 1.cs 3309ms 45ms 47.6MB 3260ms 43ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 265ms 1.2ms 13.6MB 250ms 0ms dotnet/aot 9.0.100
kotlin 2-m.kt 304ms 11ms 212.8MB 533ms 40ms kotlin/jvm 21
kotlin 1.kt 325ms 2.9ms 202.8MB 440ms 27ms kotlin/jvm 21
csharp 2.cs 357ms 1.6ms 26.6MB 343ms 0ms mono 6.12.0
csharp 2.cs 401ms 4.2ms 35.5MB 380ms 13ms dotnet 9.0.100
kotlin 2.kt 898ms 0.8ms 7.8MB 1297ms 43ms kotlin/native 1.8.21
kotlin 1.kt 1591ms 14ms 7.9MB 1973ms 20ms kotlin/native 1.8.21
csharp 1.cs 3169ms 19ms 17.0MB 3133ms 20ms dotnet/aot 9.0.100
csharp 1.cs 3580ms 13ms 39.1MB 3560ms 20ms dotnet 9.0.100
csharp 1.cs timeout 0.0ms 45.8MB 4940ms 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 54ms 0.7ms 13.5MB 37ms 3ms dotnet/aot 9.0.100
csharp 2.cs 99ms 9.0ms 26.8MB 90ms 0ms mono 6.12.0
kotlin 1-m.kt 140ms 3.1ms 90.2MB 267ms 27ms kotlin/jvm 21
kotlin 2.kt 142ms 3.9ms 5.7MB 200ms 0ms kotlin/native 1.8.21
kotlin 2-m.kt 154ms 12ms 98.0MB 293ms 37ms kotlin/jvm 21
csharp 2.cs 163ms 2.9ms 35.6MB 137ms 17ms dotnet 9.0.100
kotlin 1.kt 170ms 6.0ms 5.7MB 210ms 3ms kotlin/native 1.8.21
csharp 1.cs 1613ms 13ms 38.5MB 1600ms 13ms dotnet 9.0.100
csharp 1.cs 1805ms 4.2ms 16.9MB 1787ms 3ms dotnet/aot 9.0.100
csharp 1.cs 1806ms 4.7ms 30.7MB 1790ms 3ms mono 6.12.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 350ms 2.1ms 679.4MB 383ms 77ms kotlin/jvm 21
csharp 2.cs 543ms 7.0ms 124.9MB 480ms 93ms dotnet/aot 9.0.100
csharp 1.cs 598ms 27ms 152.8MB 520ms 123ms dotnet/aot 9.0.100
csharp 2.cs 679ms 13ms 140.7MB 630ms 100ms dotnet 9.0.100
csharp 1.cs 754ms 16ms 173.0MB 683ms 140ms dotnet 9.0.100
csharp 1.cs 1318ms 93ms 142.6MB 1553ms 177ms mono 6.12.0
kotlin 1-m.kt 1501ms 11ms 136.5MB 2307ms 327ms kotlin/native 1.8.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 127ms 2.6ms 206.6MB 150ms 40ms kotlin/jvm 21
csharp 2.cs 135ms 1.1ms 66.2MB 107ms 30ms dotnet/aot 9.0.100
csharp 1.cs 149ms 4.0ms 80.6MB 110ms 47ms dotnet/aot 9.0.100
csharp 2.cs 256ms 2.6ms 84.5MB 213ms 53ms dotnet 9.0.100
csharp 1.cs 264ms 7.8ms 69.4MB 230ms 40ms mono 6.12.0
csharp 1.cs 274ms 1.4ms 99.3MB 243ms 57ms dotnet 9.0.100
kotlin 1-m.kt 314ms 24ms 40.5MB 453ms 73ms kotlin/native 1.8.21

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 358ms 1.2ms 34.0MB 347ms 0ms dotnet 9.0.100
csharp 8.cs 371ms 1.4ms 15.8MB 360ms 0ms dotnet/aot 9.0.100
kotlin 1n.kt 407ms 3.5ms 4.6MB 397ms 0ms kotlin/native 1.8.21
csharp 8.cs 424ms 8.4ms 33.8MB 397ms 10ms dotnet 9.0.100
kotlin 1.kt 443ms 2.0ms 49.1MB 483ms 17ms kotlin/jvm 21
csharp 8.cs 1247ms 5.7ms 24.3MB 1230ms 7ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1n.kt 45ms 1.6ms 4.6MB 33ms 0ms kotlin/native 1.8.21
csharp 8.cs 45ms 1.6ms 15.8MB 30ms 0ms dotnet/aot 9.0.100
csharp 9.cs 93ms 1.7ms 33.7MB 77ms 7ms dotnet 9.0.100
csharp 8.cs 94ms 0.7ms 33.7MB 73ms 10ms dotnet 9.0.100
kotlin 1.kt 118ms 1.0ms 49.6MB 160ms 17ms kotlin/jvm 21
csharp 8.cs 165ms 1.7ms 24.4MB 150ms 0ms mono 6.12.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3199ms 6.2ms 19.7MB 3087ms 107ms dotnet/aot 9.0.100
csharp 1.cs 3600ms 78ms 44.2MB 3597ms 130ms dotnet 9.0.100
kotlin 1.kt 3780ms 66ms 353.7MB 4587ms 93ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 7.6MB 6390ms 297ms kotlin/native 1.8.21
kotlin 2n.kt timeout 0.0ms 8.2MB 4990ms 167ms kotlin/native 1.8.21

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 751ms 1.3ms 19.6MB 710ms 30ms dotnet/aot 9.0.100
csharp 1.cs 991ms 26ms 44.0MB 1090ms 37ms dotnet 9.0.100
kotlin 1-m.kt 992ms 31ms 352.8MB 1700ms 87ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 7.3MB 6427ms 263ms kotlin/native 1.8.21
kotlin 2n.kt timeout 0.0ms 8.2MB 5007ms 150ms kotlin/native 1.8.21

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6.cs 1754ms 4.8ms 426.6MB 1663ms 143ms dotnet/aot 9.0.100
csharp 5.cs 2108ms 44ms 452.8MB 2167ms 183ms dotnet 9.0.100
csharp 6.cs 2778ms 82ms 451.7MB 2720ms 180ms dotnet 9.0.100
csharp 5.cs 4294ms 41ms 430.2MB 4173ms 170ms dotnet/aot 9.0.100
kotlin 1.kt timeout 0.0ms 171.4MB 5383ms 43ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 279.0MB 5193ms 690ms kotlin/native 1.8.21

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6.cs 192ms 0.4ms 57.4MB 160ms 20ms dotnet/aot 9.0.100
csharp 5.cs 295ms 8.5ms 81.4MB 263ms 20ms dotnet 9.0.100
csharp 6.cs 389ms 1.3ms 77.9MB 353ms 30ms dotnet 9.0.100
csharp 5.cs 440ms 1.5ms 55.9MB 413ms 20ms dotnet/aot 9.0.100
kotlin 1-m.kt 816ms 17ms 133.5MB 1237ms 33ms kotlin/jvm 21
kotlin 1n.kt 3103ms 11ms 67.1MB 3820ms 7ms kotlin/native 1.8.21

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 2841ms 7.7ms 17.0MB 2797ms 27ms dotnet/aot 9.0.100
kotlin 1.kt 3097ms 63ms 230.9MB 3970ms 60ms kotlin/jvm 21
csharp 1.cs 3124ms 139ms 38.4MB 3177ms 40ms dotnet 9.0.100

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 719ms 0.5ms 17.0MB 697ms 3ms dotnet/aot 9.0.100
kotlin 1-m.kt 971ms 46ms 231.8MB 1847ms 70ms kotlin/jvm 21
csharp 1.cs 982ms 2.4ms 41.6MB 1067ms 23ms dotnet 9.0.100