Programming Language and compiler
Benchmarks

Results for 38 of 40 languages from this run on actest1.

Unavailable in this run: Hack, Lisp. Follow the run link for failure details.

C# VS Dart benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -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 1295ms 11ms 187.1MB 1320ms 160ms dotnet 9.0.318
dart 1.dart 1485ms 9.0ms 70.6MB 1513ms 33ms dart/exe 3.13.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 287ms 27ms 55.0MB 213ms 33ms dotnet 9.0.318
dart 1.dart 615ms 12ms 40.9MB 607ms 13ms dart/exe 3.13.4

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 3524ms 240ms 77.2MB 12327ms 143ms dotnet 9.0.318
dart 1.dart 9125ms 113ms 18.3MB 10160ms 83ms dart/exe 3.13.4

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 433ms 30ms 41.3MB 1257ms 27ms dotnet 9.0.318
dart 1.dart 545ms 7.6ms 9.6MB 550ms 17ms dart/exe 3.13.4

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 8169ms 4.7ms 39.1MB 8167ms 20ms dotnet 9.0.318
dart 1.dart 10249ms 21ms 17.3MB 10233ms 20ms dart/exe 3.13.4

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 1436ms 18ms 36.0MB 1407ms 10ms dotnet 9.0.318
dart 1.dart 1629ms 12ms 10.3MB 1610ms 10ms dart/exe 3.13.4

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 228ms 1.4ms 45.9MB 590ms 100ms dotnet 9.0.318
dart 1.dart 453ms 23ms 8.5MB 443ms 0ms dart/exe 3.13.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 52ms 3.1ms 8.5MB 40ms 0ms dart/exe 3.13.4
csharp 5-m.cs 89ms 8.4ms 41.0MB 130ms 10ms dotnet 9.0.318

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 4.6ms 0.7ms 5.6MB 0ms 0ms dart/exe 3.13.4
csharp 1.cs 46ms 3.5ms 24.6MB 30ms 2ms dotnet 9.0.318

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2-http2.cs 821ms 13ms 108.9MB 1357ms 167ms dotnet 9.0.318
csharp 2-m.cs 1078ms 79ms 166.0MB 1467ms 757ms dotnet 9.0.318
csharp 1-m.cs 1153ms 50ms 167.4MB 1897ms 800ms dotnet 9.0.318
csharp 2-http3.cs 1186ms 29ms 170.6MB 2087ms 340ms dotnet 9.0.318
dart 2-m.dart 1656ms 60ms 93.2MB 1903ms 1347ms dart/exe 3.13.4
dart 1.dart 8370ms 40ms 85.5MB 1817ms 1257ms dart/exe 3.13.4

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 398ms 29ms 49.0MB 280ms 263ms dart/exe 3.13.4
csharp 2.cs 608ms 17ms 87.8MB 637ms 177ms dotnet 9.0.318
csharp 1-m.cs 656ms 17ms 100.2MB 873ms 230ms dotnet 9.0.318
csharp 2-http2.cs 679ms 17ms 90.2MB 780ms 113ms dotnet 9.0.318
csharp 2-http3.cs 868ms 13ms 100.2MB 1010ms 147ms dotnet 9.0.318
dart 1.dart 2683ms 529ms 47.1MB 213ms 233ms dart/exe 3.13.4

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 213ms 4.2ms 51.5MB 193ms 10ms dart/exe 3.13.4
csharp 2.cs 503ms 28ms 73.7MB 480ms 30ms dotnet 9.0.318
csharp 1.cs 1142ms 104ms 145.0MB 1297ms 93ms dotnet 9.0.318

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 2025ms 38ms 267.6MB 2557ms 103ms dart/exe 3.13.4
csharp 2.cs 2313ms 114ms 247.2MB 2667ms 93ms dotnet 9.0.318
csharp 1-m.cs 3652ms 36ms 762.3MB 5157ms 397ms dotnet 9.0.318

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6-m.cs 1157ms 42ms 72.1MB 2957ms 37ms dotnet 9.0.318
dart 3-m.dart 2275ms 81ms 279.0MB 6273ms 100ms dart/exe 3.13.4

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6-m.cs 289ms 10ms 58.9MB 450ms 33ms dotnet 9.0.318
dart 3-m.dart 385ms 7.1ms 185.6MB 910ms 67ms dart/exe 3.13.4

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 203ms 0.9ms 8.7MB 190ms 0ms dart/exe 3.13.4
csharp 2.cs 293ms 15ms 32.0MB 273ms 13ms dotnet 9.0.318
dart 1.dart 1045ms 0.8ms 8.6MB 1033ms 0ms dart/exe 3.13.4
csharp 1.cs 2152ms 98ms 36.0MB 2140ms 20ms dotnet 9.0.318

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 484ms 2.4ms 29.8MB 463ms 13ms dotnet 9.0.318
dart 2.dart 587ms 2.0ms 9.4MB 577ms 0ms dart/exe 3.13.4
dart 1.dart 3117ms 5.0ms 8.7MB 3103ms 0ms dart/exe 3.13.4
csharp 1.cs 6072ms 312ms 36.0MB 6053ms 30ms dotnet 9.0.318

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 99ms 1.9ms 8.6MB 90ms 0ms dart/exe 3.13.4
dart 1.dart 170ms 2.9ms 8.6MB 160ms 0ms dart/exe 3.13.4
csharp 2.cs 203ms 0.2ms 31.9MB 180ms 10ms dotnet 9.0.318
csharp 1.cs 4300ms 12ms 33.1MB 4280ms 20ms dotnet 9.0.318

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 4.cs 1297ms 11ms 38.9MB 1273ms 10ms dotnet 9.0.318
csharp 2.cs 1353ms 3.1ms 40.1MB 1333ms 13ms dotnet 9.0.318
csharp 3.cs 3774ms 86ms 39.8MB 3747ms 10ms dotnet 9.0.318
csharp 1.cs 3878ms 86ms 39.6MB 3857ms 7ms dotnet 9.0.318

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 4.cs 177ms 2.6ms 35.9MB 153ms 17ms dotnet 9.0.318
csharp 1.cs 231ms 2.8ms 34.9MB 207ms 10ms dotnet 9.0.318
csharp 3.cs 268ms 2.2ms 34.6MB 237ms 20ms dotnet 9.0.318
csharp 2.cs 295ms 8.0ms 37.0MB 277ms 7ms dotnet 9.0.318

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 826ms 7.2ms 55.9MB 820ms 30ms dart/exe 3.13.4
csharp 2.cs 904ms 34ms 135.4MB 880ms 93ms dotnet 9.0.318
csharp 1.cs 1035ms 40ms 163.4MB 1010ms 123ms dotnet 9.0.318

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 304ms 5.8ms 74.7MB 257ms 57ms dotnet 9.0.318
csharp 1.cs 337ms 4.6ms 93.7MB 303ms 57ms dotnet 9.0.318
dart 1.dart 463ms 4.0ms 43.5MB 447ms 13ms dart/exe 3.13.4

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3.dart 763ms 1.7ms 5.5MB 750ms 0ms dart/exe 3.13.4
csharp 8.cs 783ms 1.5ms 29.6MB 760ms 10ms dotnet 9.0.318
csharp 9.cs 997ms 4.7ms 29.6MB 967ms 17ms dotnet 9.0.318

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3.dart 84ms 3.0ms 5.8MB 70ms 3ms dart/exe 3.13.4
csharp 8.cs 159ms 7.2ms 30.1MB 140ms 3ms dotnet 9.0.318
csharp 9.cs 228ms 3.1ms 29.9MB 203ms 10ms dotnet 9.0.318

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 819ms 3.8ms 33.5MB 797ms 13ms dotnet 9.0.318
csharp 1.cs 1042ms 3.6ms 96.6MB 1020ms 13ms dotnet 9.0.318

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 205ms 0.9ms 32.5MB 183ms 7ms dotnet 9.0.318
csharp 1.cs 235ms 2.8ms 37.6MB 213ms 10ms dotnet 9.0.318

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 1998ms 7.0ms 15.2MB 1987ms 47ms dart/exe 3.13.4
csharp 1.cs 4990ms 415ms 40.2MB 4877ms 317ms dotnet 9.0.318

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 439ms 5.3ms 15.0MB 423ms 10ms dart/exe 3.13.4
csharp 1.cs 1338ms 83ms 39.5MB 1447ms 73ms dotnet 9.0.318

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5.cs 2515ms 24ms 440.0MB 2690ms 250ms dotnet 9.0.318
csharp 6.cs 3319ms 218ms 437.6MB 3393ms 273ms dotnet 9.0.318
dart 1.dart 9757ms 76ms 187.5MB 9767ms 80ms dart/exe 3.13.4

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5.cs 394ms 5.1ms 73.8MB 370ms 33ms dotnet 9.0.318
csharp 6.cs 560ms 7.0ms 75.4MB 530ms 33ms dotnet 9.0.318
dart 1.dart 987ms 14ms 43.3MB 957ms 17ms dart/exe 3.13.4

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 4071ms 82ms 37.6MB 4150ms 47ms dotnet 9.0.318

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 1287ms 120ms 37.8MB 1393ms 27ms dotnet 9.0.318

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 5928ms 20ms 33.5MB 23127ms 17ms dotnet 9.0.318
dart 2.dart 8696ms 5.2ms 6.3MB 8683ms 0ms dart/exe 3.13.4
dart 1.dart 11051ms 5.3ms 5.8MB 11040ms 0ms dart/exe 3.13.4

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1536ms 1.6ms 34.0MB 5793ms 13ms dotnet 9.0.318
dart 2.dart 2185ms 2.8ms 5.7MB 2173ms 0ms dart/exe 3.13.4
dart 1.dart 2766ms 11ms 5.9MB 2757ms 0ms dart/exe 3.13.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 449ms 3.7ms 33.3MB 1487ms 17ms dotnet 9.0.318
dart 2.dart 554ms 2.3ms 5.7MB 540ms 0ms dart/exe 3.13.4
dart 1.dart 701ms 3.2ms 5.8MB 690ms 0ms dart/exe 3.13.4