Programming Language and compiler
Benchmarks

Javascript VS C# benchmarks

Current benchmark data was generated on Tue Apr 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 948ms 4.4ms 196.3MB 950ms 160ms dotnet 9.0.202
javascript 1-m.js 1004ms 24ms 188.7MB 1530ms 233ms bun 1.2.8
csharp 1.cs 1012ms 10ms 166.5MB 1010ms 130ms dotnet/aot 9.0.202
javascript 1-m.js 1411ms 78ms 271.7MB 2213ms 160ms node 23.10.0
csharp 1.cs 1761ms 69ms 101.3MB 1963ms 233ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 101ms 1.5ms 79.0MB 77ms 27ms bun 1.2.8
javascript 1.js 124ms 0.7ms 78.6MB 127ms 23ms node 23.10.0
csharp 1.cs 133ms 8.6ms 32.6MB 87ms 33ms dotnet/aot 9.0.202
csharp 1.cs 149ms 2.7ms 44.2MB 127ms 10ms mono 6.12.0
csharp 1.cs 202ms 7.8ms 51.2MB 160ms 37ms 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 1611ms 17ms 90.1MB 1693ms 57ms node 23.10.0
csharp 1-m.cs 2276ms 132ms 52.0MB 7957ms 63ms dotnet/aot 9.0.202
javascript 1.js 2512ms 15ms 101.3MB 2547ms 53ms bun 1.2.8
csharp 1-m.cs 2746ms 47ms 67.1MB 8730ms 100ms dotnet 9.0.202

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 161ms 21ms 19.1MB 460ms 10ms dotnet/aot 9.0.202
javascript 1.js 172ms 23ms 72.3MB 160ms 20ms node 23.10.0
javascript 1.js 201ms 1.8ms 87.0MB 223ms 30ms bun 1.2.8
csharp 1-m.cs 311ms 6.5ms 37.2MB 817ms 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 273ms 5.6ms 62.9MB 283ms 20ms node 23.10.0
javascript 1.js 530ms 3.1ms 77.9MB 500ms 30ms bun 1.2.8
csharp 1.cs 4092ms 4.1ms 18.5MB 4070ms 10ms dotnet/aot 9.0.202
csharp 1.cs 4965ms 21ms 37.6MB 4930ms 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 0.4ms 61.7MB 150ms 20ms node 23.10.0
javascript 1.js 500ms 2.9ms 67.9MB 473ms 17ms bun 1.2.8
csharp 1.cs 680ms 1.8ms 14.5MB 660ms 3ms dotnet/aot 9.0.202
csharp 1.cs 860ms 2.1ms 33.9MB 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 10.0ms 3.3ms 9.4MB 0ms 0ms dotnet/aot 9.0.202
javascript 1.js 13ms 0.5ms 32.8MB 0ms 0ms bun 1.2.8
javascript 1.js 31ms 0.9ms 48.1MB 18ms 4ms node 23.10.0
csharp 1.cs 31ms 0.8ms 21.3MB 20ms 0ms mono 6.12.0
csharp 1.cs 36ms 0.4ms 26.3MB 20ms 6ms 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 338ms 12ms 75.3MB 157ms 423ms bun 1.2.8
csharp 2-http2.cs 519ms 5.0ms 108.6MB 747ms 143ms dotnet 9.0.202
csharp 2-m.cs 607ms 21ms 141.6MB 753ms 557ms dotnet 9.0.202
csharp 2-http3.cs 677ms 3.9ms 143.1MB 1103ms 263ms dotnet 9.0.202
csharp 1-m.cs 752ms 8.4ms 176.0MB 1153ms 747ms dotnet 9.0.202
javascript 1.js 2896ms 124ms 177.9MB 2793ms 1333ms node 23.10.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 105ms 10ms 55.1MB 33ms 93ms bun 1.2.8
csharp 2-m.cs 361ms 10ms 87.5MB 397ms 183ms dotnet 9.0.202
javascript 1.js 366ms 7.2ms 78.7MB 347ms 130ms node 23.10.0
csharp 1-m.cs 385ms 6.8ms 97.4MB 533ms 217ms dotnet 9.0.202
csharp 2-http2.cs 451ms 1.8ms 86.1MB 493ms 100ms dotnet 9.0.202
csharp 2-http3.cs 498ms 9.0ms 93.5MB 590ms 110ms dotnet 9.0.202

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 77ms 6.2ms 68.4MB 50ms 20ms bun 1.2.8
javascript 1.js 110ms 0.5ms 75.9MB 100ms 17ms node 23.10.0
csharp 2.cs 309ms 3.1ms 69.0MB 280ms 27ms dotnet 9.0.202
csharp 1.cs 717ms 4.5ms 143.8MB 737ms 90ms dotnet 9.0.202

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 395ms 2.3ms 236.6MB 337ms 100ms bun 1.2.8
javascript 1.js 688ms 2.2ms 198.7MB 797ms 83ms node 23.10.0
csharp 2.cs 1489ms 10ms 236.1MB 1653ms 90ms dotnet 9.0.202
csharp 1.cs 2784ms 150ms 741.8MB 3287ms 450ms 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 96ms 1.4ms 9.9MB 80ms 0ms dotnet/aot 9.0.202
csharp 2.cs 151ms 1.3ms 21.1MB 137ms 0ms mono 6.12.0
csharp 2.cs 252ms 3.5ms 29.5MB 237ms 10ms dotnet 9.0.202
javascript 2.js 310ms 2.7ms 62.8MB 303ms 13ms node 23.10.0
javascript 1.js 560ms 0.8ms 60.6MB 547ms 13ms node 23.10.0
javascript 2.js 659ms 5.8ms 122.6MB 727ms 53ms bun 1.2.8
javascript 1.js 833ms 1.1ms 107.4MB 923ms 70ms bun 1.2.8
csharp 1.cs 1047ms 8.8ms 13.1MB 1030ms 3ms dotnet/aot 9.0.202
csharp 1.cs 1338ms 47ms 32.4MB 1330ms 10ms dotnet 9.0.202
csharp 1.cs 3356ms 34ms 45.5MB 3303ms 40ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 273ms 2.6ms 9.6MB 260ms 0ms dotnet/aot 9.0.202
csharp 2.cs 361ms 2.6ms 22.6MB 350ms 0ms mono 6.12.0
csharp 2.cs 405ms 5.7ms 29.4MB 390ms 10ms dotnet 9.0.202
javascript 2.js 852ms 3.2ms 69.0MB 840ms 17ms node 23.10.0
javascript 1.js 1583ms 5.1ms 67.8MB 1567ms 13ms node 23.10.0
javascript 2.js 1842ms 2.5ms 123.1MB 2020ms 73ms bun 1.2.8
javascript 1.js 2420ms 5.6ms 126.7MB 2723ms 157ms bun 1.2.8
csharp 1.cs 3129ms 26ms 13.1MB 3100ms 13ms dotnet/aot 9.0.202
csharp 1.cs 3666ms 77ms 33.0MB 3643ms 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 54ms 0.1ms 9.8MB 40ms 0ms dotnet/aot 9.0.202
csharp 2.cs 94ms 2.2ms 22.8MB 80ms 0ms mono 6.12.0
javascript 1.js 163ms 1.2ms 58.1MB 150ms 10ms node 23.10.0
javascript 2.js 167ms 1.6ms 57.0MB 160ms 7ms node 23.10.0
csharp 2.cs 167ms 1.7ms 29.3MB 147ms 10ms dotnet 9.0.202
javascript 1.js 319ms 1.4ms 114.8MB 360ms 70ms bun 1.2.8
javascript 2.js 355ms 2.5ms 126.4MB 377ms 50ms bun 1.2.8
csharp 1.cs 1640ms 13ms 32.5MB 1623ms 10ms dotnet 9.0.202
csharp 1.cs 1819ms 22ms 12.9MB 1797ms 0ms dotnet/aot 9.0.202
csharp 1.cs 1822ms 11ms 28.8MB 1810ms 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 474ms 4.8ms 137.9MB 620ms 120ms bun 1.2.8
javascript 1.js 531ms 2.6ms 130.3MB 617ms 60ms node 23.10.0
csharp 2.cs 566ms 11ms 120.7MB 500ms 93ms dotnet/aot 9.0.202
csharp 1.cs 614ms 8.4ms 150.1MB 553ms 133ms dotnet/aot 9.0.202
csharp 2.cs 668ms 5.9ms 137.7MB 627ms 87ms dotnet 9.0.202
csharp 1.cs 751ms 3.6ms 165.4MB 690ms 133ms dotnet 9.0.202
csharp 1.cs 1334ms 44ms 144.1MB 1567ms 170ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 117ms 0.3ms 86.8MB 100ms 33ms bun 1.2.8
csharp 2.cs 137ms 4.4ms 58.4MB 100ms 40ms dotnet/aot 9.0.202
csharp 1.cs 159ms 9.7ms 74.8MB 123ms 50ms dotnet/aot 9.0.202
javascript 1.js 163ms 6.2ms 98.5MB 160ms 37ms node 23.10.0
csharp 2.cs 256ms 2.1ms 74.6MB 227ms 37ms dotnet 9.0.202
csharp 1.cs 267ms 5.4ms 69.4MB 240ms 33ms mono 6.12.0
csharp 1.cs 281ms 2.4ms 91.4MB 240ms 70ms dotnet 9.0.202

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 363ms 4.2ms 27.6MB 343ms 3ms dotnet 9.0.202
csharp 8.cs 373ms 1.9ms 9.9MB 360ms 0ms dotnet/aot 9.0.202
csharp 8.cs 421ms 0.6ms 27.6MB 400ms 10ms dotnet 9.0.202
javascript 6.js 460ms 4.6ms 55.8MB 447ms 7ms node 23.10.0
javascript 6.js 791ms 19ms 45.8MB 783ms 10ms bun 1.2.8
csharp 8.cs 1251ms 3.3ms 22.1MB 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 45ms 1.4ms 9.9MB 30ms 0ms dotnet/aot 9.0.202
javascript 6.js 78ms 1.4ms 56.0MB 70ms 7ms node 23.10.0
csharp 9.cs 95ms 3.9ms 27.8MB 73ms 10ms dotnet 9.0.202
csharp 8.cs 95ms 0.2ms 27.6MB 77ms 10ms dotnet 9.0.202
javascript 6.js 99ms 1.1ms 45.8MB 97ms 3ms bun 1.2.8
csharp 8.cs 165ms 1.8ms 22.4MB 153ms 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 2498ms 4.6ms 59.8MB 2507ms 17ms node 23.10.0
csharp 1.cs 2839ms 5.3ms 13.1MB 2797ms 33ms dotnet/aot 9.0.202
javascript 1.js 2886ms 0.3ms 85.0MB 2900ms 50ms bun 1.2.8
csharp 1.cs 2979ms 42ms 35.4MB 3047ms 40ms dotnet 9.0.202

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 670ms 7.4ms 57.1MB 680ms 13ms node 23.10.0
csharp 1.cs 728ms 13ms 13.0MB 707ms 10ms dotnet/aot 9.0.202
javascript 1.js 764ms 19ms 84.4MB 763ms 27ms bun 1.2.8
csharp 1.cs 999ms 4.6ms 34.1MB 1083ms 20ms dotnet 9.0.202

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3238ms 14ms 13.9MB 3137ms 97ms dotnet/aot 9.0.202
csharp 1.cs 3641ms 68ms 38.0MB 3640ms 113ms dotnet 9.0.202
javascript 3.js timeout 0.0ms 87.8MB 4987ms 23ms node 23.10.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 756ms 7.3ms 13.5MB 720ms 23ms dotnet/aot 9.0.202
csharp 1.cs 998ms 15ms 37.6MB 1087ms 33ms dotnet 9.0.202
javascript 3.js 1103ms 0.7ms 71.1MB 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 1864ms 3.2ms 10.6MB 7257ms 10ms dotnet/aot 9.0.202
csharp 3-m.cs 2008ms 131ms 30.1MB 7223ms 17ms dotnet 9.0.202
javascript 6-m.js 2173ms 8.2ms 114.4MB 8300ms 53ms node 23.10.0
csharp 3-m.cs 4633ms 30ms 24.9MB 17887ms 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 477ms 1.9ms 10.3MB 1807ms 3ms dotnet/aot 9.0.202
csharp 3-m.cs 535ms 1.5ms 30.0MB 1870ms 17ms dotnet 9.0.202
javascript 6-m.js 650ms 1.3ms 113.4MB 2307ms 53ms node 23.10.0
csharp 3-m.cs 1312ms 112ms 24.4MB 4640ms 13ms 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 1.2ms 10.6MB 447ms 3ms dotnet/aot 9.0.202
csharp 3-m.cs 178ms 1.4ms 28.3MB 507ms 10ms dotnet 9.0.202
javascript 6-m.js 268ms 5.8ms 112.1MB 827ms 50ms node 23.10.0
csharp 3-m.cs 348ms 2.9ms 25.6MB 1167ms 10ms mono 6.12.0