Programming Language and compiler
Benchmarks

Javascript VS C# benchmarks

Current benchmark data was generated on Sat Mar 29 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 936ms 4.1ms 186.8MB 927ms 150ms dotnet 9.0.202
javascript 1-m.js 952ms 9.6ms 197.4MB 1437ms 220ms bun 1.2.7
csharp 1.cs 1043ms 56ms 186.1MB 1020ms 140ms dotnet/aot 9.0.202
javascript 1-m.js 1321ms 107ms 289.4MB 2197ms 167ms node 23.10.0
csharp 1.cs 1768ms 82ms 102.0MB 1990ms 220ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 102ms 1.5ms 79.8MB 73ms 30ms bun 1.2.7
csharp 1.cs 121ms 1.8ms 32.6MB 83ms 33ms dotnet/aot 9.0.202
javascript 1.js 126ms 1.1ms 78.6MB 127ms 27ms node 23.10.0
csharp 1.cs 152ms 5.0ms 44.1MB 130ms 13ms mono 6.12.0
csharp 1.cs 204ms 10ms 53.0MB 160ms 40ms dotnet 9.0.202

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 1657ms 78ms 90.1MB 1733ms 57ms node 23.10.0
csharp 1-m.cs 2184ms 61ms 51.4MB 7633ms 77ms dotnet/aot 9.0.202
javascript 1.js 2569ms 29ms 101.5MB 2587ms 67ms bun 1.2.7
csharp 1-m.cs 2802ms 47ms 74.2MB 9787ms 97ms dotnet 9.0.202

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 151ms 2.8ms 18.2MB 453ms 13ms dotnet/aot 9.0.202
javascript 1.js 190ms 9.3ms 72.5MB 173ms 23ms node 23.10.0
javascript 1.js 203ms 1.1ms 87.2MB 223ms 30ms bun 1.2.7
csharp 1-m.cs 273ms 15ms 36.9MB 770ms 20ms dotnet 9.0.202

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 274ms 4.8ms 63.4MB 287ms 27ms node 23.10.0
javascript 1.js 529ms 3.6ms 78.0MB 500ms 27ms bun 1.2.7
csharp 1.cs 4107ms 11ms 18.3MB 4083ms 10ms dotnet/aot 9.0.202
csharp 1.cs 4975ms 8.9ms 37.5MB 4940ms 20ms dotnet 9.0.202

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 128ms 1.1ms 62.0MB 153ms 17ms node 23.10.0
javascript 1.js 499ms 3.3ms 67.9MB 473ms 20ms bun 1.2.7
csharp 1.cs 678ms 1.2ms 14.5MB 660ms 7ms dotnet/aot 9.0.202
csharp 1.cs 864ms 7.8ms 34.0MB 840ms 13ms dotnet 9.0.202

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 9.1ms 3.9ms 9.8MB 0ms 0ms dotnet/aot 9.0.202
javascript 1.js 13ms 0.4ms 33.1MB 0ms 10ms bun 1.2.7
javascript 1.js 31ms 0.6ms 48.0MB 18ms 4ms node 23.10.0
csharp 1.cs 31ms 1.0ms 21.3MB 20ms 0ms mono 6.12.0
csharp 1.cs 35ms 0.9ms 26.3MB 18ms 8ms dotnet 9.0.202

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 343ms 16ms 77.8MB 147ms 433ms bun 1.2.7
csharp 2-http2.cs 513ms 1.7ms 108.8MB 730ms 153ms dotnet 9.0.202
csharp 2-m.cs 584ms 28ms 137.0MB 737ms 523ms dotnet 9.0.202
csharp 2-http3.cs 680ms 12ms 145.9MB 1130ms 243ms dotnet 9.0.202
csharp 1-m.cs 740ms 18ms 170.5MB 1157ms 727ms dotnet 9.0.202
javascript 1.js 3165ms 343ms 189.8MB 3050ms 1443ms node 23.10.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 117ms 3.9ms 55.3MB 40ms 107ms bun 1.2.7
csharp 2-m.cs 361ms 3.7ms 87.3MB 390ms 197ms dotnet 9.0.202
javascript 1.js 364ms 0.9ms 79.9MB 330ms 137ms node 23.10.0
csharp 1-m.cs 395ms 4.4ms 97.2MB 530ms 230ms dotnet 9.0.202
csharp 2-http2.cs 439ms 6.2ms 86.0MB 483ms 97ms dotnet 9.0.202
csharp 2-http3.cs 495ms 2.0ms 94.2MB 587ms 113ms dotnet 9.0.202

json-serde

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 410ms 2.1ms 268.4MB 337ms 113ms bun 1.2.7
javascript 1.js 689ms 4.0ms 200.8MB 807ms 77ms node 23.10.0
csharp 2.cs 1491ms 6.1ms 234.1MB 1633ms 87ms dotnet 9.0.202
csharp 1.cs 2686ms 63ms 745.4MB 3240ms 437ms dotnet 9.0.202

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 76ms 1.2ms 71.4MB 50ms 17ms bun 1.2.7
javascript 1.js 110ms 2.0ms 75.9MB 97ms 23ms node 23.10.0
csharp 2.cs 302ms 4.2ms 68.7MB 270ms 30ms dotnet 9.0.202
csharp 1.cs 774ms 76ms 143.4MB 790ms 80ms dotnet 9.0.202

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 99ms 2.2ms 10.0MB 83ms 0ms dotnet/aot 9.0.202
csharp 2.cs 148ms 2.5ms 21.1MB 137ms 0ms mono 6.12.0
csharp 2.cs 253ms 6.8ms 29.5MB 237ms 10ms dotnet 9.0.202
javascript 2.js 308ms 1.4ms 62.7MB 297ms 13ms node 23.10.0
javascript 1.js 557ms 2.0ms 60.6MB 543ms 13ms node 23.10.0
javascript 2.js 656ms 6.7ms 122.7MB 707ms 63ms bun 1.2.7
javascript 1.js 826ms 4.9ms 107.5MB 920ms 73ms bun 1.2.7
csharp 1.cs 1055ms 14ms 13.3MB 1030ms 10ms dotnet/aot 9.0.202
csharp 1.cs 1320ms 22ms 33.1MB 1303ms 13ms dotnet 9.0.202
csharp 1.cs 3366ms 16ms 45.5MB 3320ms 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 272ms 3.2ms 10.0MB 257ms 0ms dotnet/aot 9.0.202
csharp 2.cs 362ms 3.0ms 22.7MB 350ms 0ms mono 6.12.0
csharp 2.cs 400ms 1.6ms 29.4MB 380ms 10ms dotnet 9.0.202
javascript 2.js 849ms 6.1ms 68.1MB 837ms 20ms node 23.10.0
javascript 1.js 1587ms 4.1ms 67.7MB 1573ms 17ms node 23.10.0
javascript 2.js 1841ms 8.1ms 122.5MB 2017ms 77ms bun 1.2.7
javascript 1.js 2382ms 22ms 111.6MB 2693ms 157ms bun 1.2.7
csharp 1.cs 3130ms 20ms 13.3MB 3103ms 10ms dotnet/aot 9.0.202
csharp 1.cs 3642ms 24ms 32.9MB 3630ms 20ms dotnet 9.0.202
csharp 1.cs timeout 0.0ms 45.6MB 4947ms 47ms 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 1.2ms 9.9MB 40ms 0ms dotnet/aot 9.0.202
csharp 2.cs 93ms 2.5ms 23.2MB 80ms 0ms mono 6.12.0
javascript 1.js 163ms 0.7ms 57.9MB 150ms 10ms node 23.10.0
csharp 2.cs 164ms 3.2ms 29.3MB 147ms 7ms dotnet 9.0.202
javascript 2.js 166ms 0.8ms 56.7MB 157ms 7ms node 23.10.0
javascript 1.js 323ms 2.8ms 115.8MB 357ms 83ms bun 1.2.7
javascript 2.js 360ms 4.2ms 126.4MB 380ms 50ms bun 1.2.7
csharp 1.cs 1626ms 6.1ms 32.8MB 1617ms 10ms dotnet 9.0.202
csharp 1.cs 1807ms 5.4ms 13.1MB 1790ms 0ms dotnet/aot 9.0.202
csharp 1.cs 1820ms 10ms 28.7MB 1807ms 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 484ms 16ms 141.9MB 637ms 120ms bun 1.2.7
javascript 1.js 530ms 4.5ms 130.3MB 607ms 67ms node 23.10.0
csharp 2.cs 566ms 6.2ms 123.7MB 513ms 90ms dotnet/aot 9.0.202
csharp 1.cs 603ms 14ms 150.0MB 553ms 120ms dotnet/aot 9.0.202
csharp 2.cs 683ms 21ms 135.9MB 640ms 97ms dotnet 9.0.202
csharp 1.cs 780ms 24ms 163.5MB 717ms 137ms dotnet 9.0.202
csharp 1.cs 1338ms 54ms 140.0MB 1567ms 160ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 116ms 2.7ms 86.8MB 100ms 33ms bun 1.2.7
csharp 2.cs 138ms 6.8ms 57.0MB 110ms 30ms dotnet/aot 9.0.202
csharp 1.cs 154ms 7.0ms 74.7MB 117ms 53ms dotnet/aot 9.0.202
javascript 1.js 159ms 1.1ms 98.3MB 160ms 37ms node 23.10.0
csharp 2.cs 258ms 1.2ms 74.8MB 233ms 37ms dotnet 9.0.202
csharp 1.cs 267ms 1.6ms 69.5MB 237ms 33ms mono 6.12.0
csharp 1.cs 285ms 10ms 91.3MB 237ms 67ms dotnet 9.0.202

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 359ms 1.0ms 27.5MB 340ms 7ms dotnet 9.0.202
csharp 8.cs 372ms 0.3ms 9.8MB 360ms 0ms dotnet/aot 9.0.202
csharp 8.cs 427ms 7.6ms 27.6MB 403ms 7ms dotnet 9.0.202
javascript 6.js 462ms 3.1ms 56.1MB 453ms 0ms node 23.10.0
javascript 6.js 782ms 14ms 46.1MB 777ms 3ms bun 1.2.7
csharp 8.cs 1248ms 2.7ms 20.8MB 1233ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 8.cs 47ms 1.0ms 9.9MB 33ms 0ms dotnet/aot 9.0.202
javascript 6.js 78ms 0.6ms 56.1MB 67ms 7ms node 23.10.0
csharp 9.cs 92ms 0.8ms 27.6MB 73ms 3ms dotnet 9.0.202
csharp 8.cs 99ms 5.1ms 27.8MB 80ms 7ms dotnet 9.0.202
javascript 6.js 99ms 1.4ms 46.1MB 93ms 7ms bun 1.2.7
csharp 8.cs 165ms 1.1ms 22.5MB 150ms 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 11ms 60.0MB 2583ms 23ms node 23.10.0
javascript 1.js 2796ms 8.4ms 84.8MB 2807ms 60ms bun 1.2.7
csharp 1.cs 2851ms 10.0ms 13.1MB 2817ms 20ms dotnet/aot 9.0.202
csharp 1.cs 2967ms 19ms 35.6MB 3027ms 43ms dotnet 9.0.202

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 677ms 1.5ms 57.1MB 683ms 13ms node 23.10.0
csharp 1.cs 720ms 4.3ms 13.0MB 700ms 7ms dotnet/aot 9.0.202
javascript 1.js 740ms 6.0ms 84.4MB 740ms 33ms bun 1.2.7
csharp 1.cs 1005ms 7.9ms 35.8MB 1087ms 23ms dotnet 9.0.202

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3225ms 18ms 13.9MB 3120ms 100ms dotnet/aot 9.0.202
csharp 1.cs 3546ms 1.9ms 38.0MB 3570ms 110ms dotnet 9.0.202
javascript 3.js timeout 0.0ms 88.4MB 4983ms 23ms node 23.10.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 759ms 2.6ms 13.4MB 720ms 27ms dotnet/aot 9.0.202
csharp 1.cs 983ms 4.6ms 37.9MB 1067ms 37ms dotnet 9.0.202
javascript 3.js 1104ms 5.3ms 70.7MB 1080ms 20ms node 23.10.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1879ms 22ms 10.4MB 7240ms 10ms dotnet/aot 9.0.202
csharp 3-m.cs 1974ms 78ms 29.9MB 7297ms 17ms dotnet 9.0.202
javascript 6-m.js 2201ms 33ms 115.5MB 8230ms 60ms node 23.10.0
csharp 3-m.cs 4747ms 137ms 25.7MB 18010ms 23ms mono 6.12.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 483ms 11ms 10.5MB 1800ms 7ms dotnet/aot 9.0.202
csharp 3-m.cs 534ms 1.3ms 29.9MB 1873ms 13ms dotnet 9.0.202
javascript 6-m.js 653ms 1.5ms 112.8MB 2323ms 57ms node 23.10.0
csharp 3-m.cs 1230ms 55ms 25.6MB 4607ms 10ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 128ms 0.7ms 10.5MB 447ms 7ms dotnet/aot 9.0.202
csharp 3-m.cs 183ms 7.9ms 28.3MB 503ms 10ms dotnet 9.0.202
javascript 6-m.js 269ms 3.8ms 110.6MB 830ms 53ms node 23.10.0
csharp 3-m.cs 354ms 10ms 24.9MB 1193ms 7ms mono 6.12.0