Programming Language and compiler
Benchmarks

Javascript VS C# benchmarks

Current benchmark data was generated on Sun Jun 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 901ms 14ms 197.1MB 893ms 147ms dotnet 9.0.300
javascript 1-m.js 907ms 13ms 181.8MB 1350ms 187ms bun 1.2.15
javascript 1.js 1049ms 5.1ms 469.9MB 970ms 217ms node 24.1.0
csharp 1.cs 1061ms 140ms 164.4MB 963ms 127ms dotnet/aot 9.0.300
csharp 1.cs 1725ms 105ms 103.6MB 1900ms 227ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 100ms 1.6ms 77.6MB 80ms 27ms bun 1.2.15
javascript 1.js 123ms 1.2ms 80.3MB 127ms 20ms node 24.1.0
csharp 1.cs 141ms 1.3ms 46.1MB 120ms 10ms mono 6.12.0
csharp 1.cs 175ms 44ms 31.8MB 100ms 33ms dotnet/aot 9.0.300
csharp 1.cs 191ms 4.8ms 49.7MB 147ms 37ms dotnet 9.0.300

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 1597ms 7.0ms 189.2MB 1570ms 100ms node 24.1.0
csharp 1-m.cs 2161ms 100ms 50.8MB 7650ms 67ms dotnet/aot 9.0.300
javascript 1.js 2458ms 46ms 104.4MB 2503ms 70ms bun 1.2.15
csharp 1-m.cs 2851ms 149ms 74.2MB 9103ms 90ms dotnet 9.0.300

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 157ms 18ms 18.6MB 467ms 10ms dotnet/aot 9.0.300
javascript 1.js 158ms 0.8ms 74.8MB 143ms 27ms node 24.1.0
javascript 1.js 199ms 1.7ms 87.9MB 237ms 37ms bun 1.2.15
csharp 1-m.cs 277ms 19ms 36.9MB 790ms 20ms dotnet 9.0.300

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 278ms 1.0ms 66.7MB 293ms 23ms node 24.1.0
javascript 1.js 517ms 2.3ms 76.2MB 493ms 17ms bun 1.2.15
csharp 1.cs 4081ms 3.3ms 18.6MB 4057ms 10ms dotnet/aot 9.0.300
csharp 1.cs 4963ms 16ms 37.8MB 4927ms 17ms dotnet 9.0.300

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 120ms 1.1ms 62.8MB 110ms 13ms node 24.1.0
javascript 1.js 508ms 1.3ms 65.6MB 487ms 20ms bun 1.2.15
csharp 1.cs 682ms 5.7ms 14.6MB 663ms 0ms dotnet/aot 9.0.300
csharp 1.cs 867ms 15ms 33.6MB 847ms 10ms dotnet 9.0.300

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 7.8ms 2.1ms 9.5MB 0ms 0ms dotnet/aot 9.0.300
javascript 1.js 12ms 0.4ms 31.5MB 0ms 0ms bun 1.2.15
csharp 1.cs 30ms 0.5ms 21.7MB 18ms 2ms mono 6.12.0
javascript 1.js 30ms 0.6ms 49.8MB 18ms 6ms node 24.1.0
csharp 1.cs 34ms 1.1ms 26.1MB 20ms 2ms dotnet 9.0.300

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 251ms 4.8ms 79.9MB 130ms 317ms bun 1.2.15
csharp 2-http2.cs 509ms 9.9ms 108.4MB 723ms 147ms dotnet 9.0.300
csharp 2-m.cs 550ms 43ms 143.4MB 700ms 503ms dotnet 9.0.300
csharp 2-http3.cs 667ms 21ms 144.2MB 1100ms 257ms dotnet 9.0.300
csharp 1-m.cs 692ms 15ms 168.0MB 1097ms 657ms dotnet 9.0.300
javascript 1.js 2719ms 485ms 296.0MB 2637ms 1240ms node 24.1.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 87ms 3.8ms 55.5MB 37ms 67ms bun 1.2.15
csharp 2-m.cs 338ms 1.2ms 87.2MB 370ms 180ms dotnet 9.0.300
javascript 1.js 342ms 4.1ms 84.0MB 330ms 123ms node 24.1.0
csharp 1-m.cs 379ms 10ms 97.4MB 530ms 210ms dotnet 9.0.300
csharp 2-http2.cs 427ms 9.5ms 86.0MB 483ms 87ms dotnet 9.0.300
csharp 2-http3.cs 488ms 3.2ms 93.6MB 577ms 110ms dotnet 9.0.300

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 71ms 1.1ms 67.8MB 40ms 20ms bun 1.2.15
javascript 1.js 102ms 0.9ms 74.9MB 80ms 20ms node 24.1.0
csharp 2.cs 306ms 0.8ms 68.7MB 270ms 30ms dotnet 9.0.300
csharp 1.cs 720ms 5.2ms 143.7MB 743ms 83ms dotnet 9.0.300

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 386ms 2.1ms 235.8MB 333ms 97ms bun 1.2.15
javascript 1.js 575ms 1.9ms 203.2MB 583ms 123ms node 24.1.0
csharp 2.cs 1470ms 26ms 232.5MB 1603ms 87ms dotnet 9.0.300
csharp 1.cs 2689ms 90ms 753.0MB 3190ms 447ms dotnet 9.0.300

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 94ms 4.1ms 9.9MB 83ms 0ms dotnet/aot 9.0.300
csharp 2.cs 150ms 2.5ms 23.2MB 133ms 3ms mono 6.12.0
csharp 2.cs 253ms 4.8ms 29.4MB 237ms 10ms dotnet 9.0.300
javascript 2.js 304ms 2.7ms 64.1MB 293ms 13ms node 24.1.0
javascript 1.js 566ms 6.6ms 62.7MB 553ms 7ms node 24.1.0
javascript 2.js 634ms 5.2ms 123.1MB 710ms 43ms bun 1.2.15
javascript 1.js 830ms 15ms 106.3MB 903ms 87ms bun 1.2.15
csharp 1.cs 1037ms 9.2ms 13.0MB 1020ms 3ms dotnet/aot 9.0.300
csharp 1.cs 1324ms 54ms 32.8MB 1313ms 13ms dotnet 9.0.300
csharp 1.cs 3334ms 47ms 43.8MB 3287ms 37ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 263ms 4.6ms 9.8MB 250ms 0ms dotnet/aot 9.0.300
csharp 2.cs 362ms 2.4ms 23.2MB 350ms 0ms mono 6.12.0
csharp 2.cs 403ms 4.6ms 29.3MB 387ms 10ms dotnet 9.0.300
javascript 2.js 833ms 3.9ms 71.4MB 820ms 17ms node 24.1.0
javascript 1.js 1610ms 3.9ms 69.4MB 1593ms 10ms node 24.1.0
javascript 2.js 1783ms 10.0ms 124.1MB 1957ms 77ms bun 1.2.15
javascript 1.js 2362ms 4.9ms 106.4MB 2650ms 160ms bun 1.2.15
csharp 1.cs 3102ms 23ms 13.4MB 3080ms 7ms dotnet/aot 9.0.300
csharp 1.cs 3566ms 25ms 32.8MB 3547ms 20ms dotnet 9.0.300
csharp 1.cs timeout 0.0ms 49.8MB 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 49ms 0.8ms 9.6MB 40ms 0ms dotnet/aot 9.0.300
csharp 2.cs 92ms 2.6ms 22.8MB 83ms 0ms mono 6.12.0
javascript 2.js 164ms 1.8ms 58.7MB 153ms 10ms node 24.1.0
csharp 2.cs 166ms 5.8ms 29.4MB 140ms 10ms dotnet 9.0.300
javascript 1.js 167ms 0.2ms 59.9MB 160ms 3ms node 24.1.0
javascript 1.js 318ms 5.1ms 130.3MB 357ms 77ms bun 1.2.15
javascript 2.js 347ms 3.8ms 125.4MB 380ms 47ms bun 1.2.15
csharp 1.cs 1611ms 4.6ms 32.6MB 1603ms 10ms dotnet 9.0.300
csharp 1.cs 1815ms 5.9ms 12.9MB 1797ms 0ms dotnet/aot 9.0.300
csharp 1.cs 1829ms 5.2ms 28.9MB 1813ms 0ms mono 6.12.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 463ms 1.1ms 136.5MB 613ms 113ms bun 1.2.15
csharp 2.cs 525ms 14ms 120.6MB 483ms 83ms dotnet/aot 9.0.300
javascript 1.js 558ms 2.7ms 230.3MB 553ms 113ms node 24.1.0
csharp 1.cs 577ms 8.1ms 144.9MB 530ms 113ms dotnet/aot 9.0.300
csharp 2.cs 666ms 14ms 136.1MB 620ms 100ms dotnet 9.0.300
csharp 1.cs 749ms 4.3ms 166.8MB 690ms 137ms dotnet 9.0.300
csharp 1.cs 1280ms 4.1ms 144.6MB 1447ms 180ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 114ms 2.2ms 85.0MB 100ms 30ms bun 1.2.15
csharp 2.cs 127ms 4.7ms 57.1MB 100ms 30ms dotnet/aot 9.0.300
csharp 1.cs 154ms 5.1ms 74.8MB 123ms 50ms dotnet/aot 9.0.300
javascript 1.js 156ms 1.2ms 100.3MB 150ms 33ms node 24.1.0
csharp 2.cs 262ms 8.0ms 75.8MB 220ms 43ms dotnet 9.0.300
csharp 1.cs 264ms 2.4ms 69.4MB 240ms 33ms mono 6.12.0
csharp 1.cs 276ms 3.6ms 93.0MB 247ms 53ms dotnet 9.0.300

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 360ms 3.8ms 27.9MB 340ms 10ms dotnet 9.0.300
csharp 8.cs 370ms 3.3ms 9.9MB 360ms 0ms dotnet/aot 9.0.300
csharp 8.cs 419ms 1.1ms 27.6MB 400ms 3ms dotnet 9.0.300
javascript 6.js 456ms 3.2ms 57.9MB 447ms 7ms node 24.1.0
javascript 6.js 597ms 2.9ms 45.0MB 600ms 0ms bun 1.2.15
csharp 8.cs 1252ms 4.8ms 22.3MB 1237ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 8.cs 44ms 0.2ms 9.9MB 30ms 0ms dotnet/aot 9.0.300
javascript 6.js 78ms 2.2ms 58.2MB 67ms 7ms node 24.1.0
javascript 6.js 80ms 0.6ms 45.0MB 90ms 3ms bun 1.2.15
csharp 9.cs 93ms 3.0ms 27.6MB 73ms 7ms dotnet 9.0.300
csharp 8.cs 95ms 2.3ms 27.6MB 77ms 3ms dotnet 9.0.300
csharp 8.cs 161ms 0.7ms 22.4MB 147ms 0ms mono 6.12.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2575ms 7.6ms 62.2MB 2580ms 13ms node 24.1.0
javascript 1.js 2822ms 6.0ms 82.3MB 2837ms 43ms bun 1.2.15
csharp 1.cs 2830ms 23ms 13.1MB 2797ms 20ms dotnet/aot 9.0.300
csharp 1.cs 2943ms 2.6ms 35.1MB 3013ms 37ms dotnet 9.0.300

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 686ms 6.9ms 58.8MB 690ms 10ms node 24.1.0
csharp 1.cs 719ms 1.5ms 12.9MB 697ms 10ms dotnet/aot 9.0.300
javascript 1.js 736ms 1.2ms 82.1MB 730ms 33ms bun 1.2.15
csharp 1.cs 997ms 9.0ms 35.1MB 1083ms 23ms dotnet 9.0.300

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3220ms 6.8ms 14.1MB 3130ms 87ms dotnet/aot 9.0.300
csharp 1.cs 3568ms 50ms 38.1MB 3597ms 107ms dotnet 9.0.300
javascript 3.js 4837ms 44ms 121.8MB 4787ms 47ms node 24.1.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 759ms 6.1ms 13.5MB 727ms 20ms dotnet/aot 9.0.300
csharp 1.cs 985ms 4.4ms 37.8MB 1073ms 37ms dotnet 9.0.300
javascript 3.js 1043ms 5.1ms 73.1MB 1020ms 17ms node 24.1.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1881ms 41ms 10.4MB 7243ms 7ms dotnet/aot 9.0.300
csharp 3-m.cs 1938ms 34ms 29.9MB 7323ms 20ms dotnet 9.0.300
javascript 6-m.js 2185ms 14ms 119.3MB 8240ms 53ms node 24.1.0
csharp 3-m.cs 4838ms 168ms 25.5MB 18427ms 13ms mono 6.12.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 475ms 1.3ms 10.5MB 1813ms 0ms dotnet/aot 9.0.300
csharp 3-m.cs 529ms 1.2ms 30.0MB 1873ms 10ms dotnet 9.0.300
javascript 6-m.js 653ms 1.5ms 117.6MB 2320ms 57ms node 24.1.0
csharp 3-m.cs 1200ms 10ms 26.7MB 4517ms 7ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 129ms 0.6ms 10.6MB 447ms 10ms dotnet/aot 9.0.300
csharp 3-m.cs 179ms 3.3ms 28.4MB 497ms 17ms dotnet 9.0.300
javascript 6-m.js 270ms 2.9ms 117.4MB 843ms 47ms node 24.1.0
csharp 3-m.cs 341ms 6.9ms 25.5MB 1153ms 7ms mono 6.12.0