Programming Language and compiler
Benchmarks

Javascript VS C# benchmarks

Current benchmark data was generated on Tue Jul 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 987ms 1.3ms 197.6MB 1000ms 140ms dotnet 9.0.301
javascript 1-m.js 998ms 4.7ms 166.9MB 1570ms 240ms bun 1.2.17
csharp 1.cs 1008ms 13ms 179.9MB 1017ms 137ms dotnet/aot 9.0.301
javascript 1.js 1086ms 11ms 469.4MB 990ms 243ms node 24.3.0
csharp 1.cs 1685ms 31ms 103.5MB 1857ms 217ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 99ms 2.6ms 77.4MB 80ms 23ms bun 1.2.17
csharp 1.cs 122ms 5.7ms 36.6MB 90ms 30ms dotnet/aot 9.0.301
javascript 1.js 131ms 1.8ms 80.9MB 130ms 33ms node 24.3.0
csharp 1.cs 142ms 0.8ms 41.9MB 120ms 13ms mono 6.12.0
csharp 1.cs 203ms 6.4ms 50.0MB 157ms 33ms dotnet 9.0.301

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 1757ms 89ms 189.8MB 1723ms 107ms node 24.3.0
csharp 1-m.cs 2289ms 142ms 50.7MB 8040ms 73ms dotnet/aot 9.0.301
javascript 1.js 2594ms 93ms 107.1MB 2637ms 73ms bun 1.2.17
csharp 1-m.cs 2934ms 143ms 73.2MB 10080ms 107ms dotnet 9.0.301

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 150ms 2.1ms 18.5MB 430ms 7ms dotnet/aot 9.0.301
javascript 1.js 164ms 4.1ms 75.2MB 150ms 20ms node 24.3.0
javascript 1.js 206ms 4.1ms 89.2MB 253ms 33ms bun 1.2.17
csharp 1-m.cs 290ms 28ms 40.0MB 830ms 27ms dotnet 9.0.301

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 276ms 3.2ms 67.8MB 300ms 23ms node 24.3.0
javascript 1.js 522ms 4.3ms 76.1MB 493ms 20ms bun 1.2.17
csharp 1.cs 4114ms 9.3ms 18.4MB 4090ms 10ms dotnet/aot 9.0.301
csharp 1.cs 4957ms 5.7ms 37.8MB 4930ms 20ms dotnet 9.0.301

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 141ms 2.7ms 63.5MB 127ms 23ms node 24.3.0
javascript 1.js 498ms 2.2ms 65.5MB 477ms 13ms bun 1.2.17
csharp 1.cs 681ms 1.0ms 14.6MB 660ms 3ms dotnet/aot 9.0.301
csharp 1.cs 884ms 5.5ms 34.0MB 857ms 10ms dotnet 9.0.301

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 6.3ms 0.3ms 8.3MB 0ms 0ms dotnet/aot 9.0.301
javascript 1.js 13ms 0.5ms 31.3MB 0ms 0ms bun 1.2.17
csharp 1.cs 32ms 1.0ms 21.2MB 20ms 0ms mono 6.12.0
javascript 1.js 32ms 0.5ms 50.6MB 18ms 6ms node 24.3.0
csharp 1.cs 38ms 1.2ms 26.3MB 20ms 4ms dotnet 9.0.301

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 277ms 13ms 77.4MB 143ms 353ms bun 1.2.17
csharp 2-http2.cs 552ms 7.6ms 108.9MB 773ms 150ms dotnet 9.0.301
csharp 2-m.cs 625ms 6.3ms 147.0MB 797ms 533ms dotnet 9.0.301
csharp 2-http3.cs 717ms 3.8ms 145.7MB 1173ms 253ms dotnet 9.0.301
csharp 1-m.cs 756ms 9.5ms 170.9MB 1177ms 713ms dotnet 9.0.301
javascript 1.js 2535ms 256ms 271.4MB 2460ms 1170ms node 24.3.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 91ms 8.2ms 55.1MB 33ms 77ms bun 1.2.17
javascript 1.js 353ms 2.0ms 85.0MB 350ms 120ms node 24.3.0
csharp 2-m.cs 376ms 9.3ms 87.8MB 420ms 190ms dotnet 9.0.301
csharp 1-m.cs 415ms 12ms 98.2MB 577ms 220ms dotnet 9.0.301
csharp 2-http2.cs 474ms 3.3ms 86.0MB 540ms 93ms dotnet 9.0.301
csharp 2-http3.cs 536ms 12ms 93.9MB 627ms 123ms dotnet 9.0.301

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 67ms 4.2ms 62.6MB 40ms 13ms bun 1.2.17
javascript 1.js 105ms 2.0ms 75.5MB 87ms 23ms node 24.3.0
csharp 2.cs 315ms 1.5ms 68.7MB 280ms 33ms dotnet 9.0.301
csharp 1.cs 812ms 57ms 143.7MB 833ms 87ms dotnet 9.0.301

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 354ms 14ms 200.8MB 310ms 83ms bun 1.2.17
javascript 1.js 572ms 2.1ms 254.7MB 597ms 113ms node 24.3.0
csharp 2.cs 1553ms 67ms 233.5MB 1740ms 90ms dotnet 9.0.301
csharp 1.cs 2799ms 121ms 763.8MB 3280ms 460ms dotnet 9.0.301

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 99ms 0.6ms 9.8MB 90ms 0ms dotnet/aot 9.0.301
csharp 2.cs 147ms 1.2ms 22.9MB 133ms 0ms mono 6.12.0
csharp 2.cs 251ms 1.5ms 29.5MB 233ms 10ms dotnet 9.0.301
javascript 2.js 308ms 1.2ms 65.1MB 300ms 10ms node 24.3.0
javascript 1.js 574ms 4.2ms 63.1MB 560ms 10ms node 24.3.0
javascript 2.js 676ms 3.1ms 123.0MB 750ms 50ms bun 1.2.17
javascript 1.js 842ms 16ms 106.1MB 943ms 70ms bun 1.2.17
csharp 1.cs 1064ms 15ms 13.0MB 1043ms 3ms dotnet/aot 9.0.301
csharp 1.cs 1315ms 11ms 32.8MB 1303ms 17ms dotnet 9.0.301
csharp 1.cs 3373ms 24ms 45.5MB 3323ms 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 278ms 1.9ms 9.6MB 267ms 0ms dotnet/aot 9.0.301
csharp 2.cs 363ms 4.6ms 22.7MB 347ms 0ms mono 6.12.0
csharp 2.cs 406ms 2.7ms 29.4MB 390ms 10ms dotnet 9.0.301
javascript 2.js 840ms 2.8ms 71.5MB 827ms 13ms node 24.3.0
javascript 1.js 1632ms 5.6ms 69.8MB 1613ms 17ms node 24.3.0
javascript 2.js 1912ms 1.7ms 123.4MB 2090ms 80ms bun 1.2.17
javascript 1.js 2440ms 16ms 106.0MB 2740ms 170ms bun 1.2.17
csharp 1.cs 3124ms 12ms 13.5MB 3100ms 13ms dotnet/aot 9.0.301
csharp 1.cs 4086ms 597ms 33.3MB 4063ms 23ms dotnet 9.0.301
csharp 1.cs timeout 0.0ms 45.8MB 4940ms 50ms mono 6.12.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 56ms 2.8ms 10.1MB 40ms 0ms dotnet/aot 9.0.301
csharp 2.cs 94ms 2.2ms 22.8MB 77ms 3ms mono 6.12.0
javascript 2.js 164ms 1.8ms 59.0MB 160ms 3ms node 24.3.0
javascript 1.js 171ms 1.6ms 60.4MB 160ms 7ms node 24.3.0
csharp 2.cs 174ms 3.0ms 29.6MB 150ms 10ms dotnet 9.0.301
javascript 1.js 328ms 1.8ms 130.1MB 367ms 80ms bun 1.2.17
javascript 2.js 376ms 2.2ms 125.0MB 407ms 53ms bun 1.2.17
csharp 1.cs 1631ms 16ms 32.4MB 1617ms 17ms dotnet 9.0.301
csharp 1.cs 1825ms 7.4ms 28.6MB 1813ms 0ms mono 6.12.0
csharp 1.cs 1831ms 2.3ms 12.9MB 1813ms 0ms dotnet/aot 9.0.301

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 483ms 5.4ms 139.7MB 633ms 127ms bun 1.2.17
csharp 2.cs 551ms 10ms 119.2MB 507ms 87ms dotnet/aot 9.0.301
javascript 1.js 598ms 14ms 230.0MB 600ms 117ms node 24.3.0
csharp 1.cs 630ms 2.9ms 147.3MB 580ms 127ms dotnet/aot 9.0.301
csharp 2.cs 714ms 12ms 136.7MB 647ms 93ms dotnet 9.0.301
csharp 1.cs 753ms 7.5ms 167.4MB 700ms 133ms dotnet 9.0.301
csharp 1.cs 1373ms 35ms 139.5MB 1567ms 183ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 120ms 0.5ms 84.5MB 107ms 33ms bun 1.2.17
csharp 2.cs 139ms 5.9ms 57.8MB 110ms 33ms dotnet/aot 9.0.301
csharp 1.cs 163ms 8.0ms 72.7MB 123ms 50ms dotnet/aot 9.0.301
javascript 1.js 165ms 0.4ms 100.0MB 160ms 33ms node 24.3.0
csharp 2.cs 267ms 8.1ms 75.7MB 220ms 40ms dotnet 9.0.301
csharp 1.cs 276ms 1.5ms 89.7MB 243ms 53ms dotnet 9.0.301
csharp 1.cs 277ms 2.7ms 69.5MB 250ms 37ms mono 6.12.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 365ms 5.3ms 27.6MB 343ms 10ms dotnet 9.0.301
csharp 8.cs 373ms 3.5ms 9.8MB 360ms 0ms dotnet/aot 9.0.301
csharp 8.cs 425ms 6.0ms 27.6MB 410ms 7ms dotnet 9.0.301
javascript 6.js 456ms 3.7ms 58.6MB 447ms 3ms node 24.3.0
javascript 6.js 602ms 8.9ms 45.0MB 607ms 3ms bun 1.2.17
csharp 8.cs 1248ms 2.0ms 20.3MB 1230ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 8.cs 46ms 1.5ms 9.9MB 30ms 0ms dotnet/aot 9.0.301
javascript 6.js 80ms 0.7ms 58.6MB 67ms 10ms node 24.3.0
javascript 6.js 82ms 1.0ms 45.0MB 87ms 3ms bun 1.2.17
csharp 8.cs 97ms 3.2ms 27.5MB 77ms 7ms dotnet 9.0.301
csharp 9.cs 99ms 5.9ms 27.9MB 73ms 10ms dotnet 9.0.301
csharp 8.cs 168ms 3.1ms 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 2471ms 0.4ms 61.3MB 2477ms 17ms node 24.3.0
javascript 1.js 2830ms 8.0ms 82.4MB 2850ms 53ms bun 1.2.17
csharp 1.cs 2863ms 11ms 13.3MB 2823ms 30ms dotnet/aot 9.0.301
csharp 1.cs 2987ms 61ms 35.4MB 3060ms 40ms dotnet 9.0.301

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 668ms 7.5ms 60.1MB 673ms 13ms node 24.3.0
csharp 1.cs 733ms 3.3ms 13.0MB 713ms 7ms dotnet/aot 9.0.301
javascript 1.js 744ms 7.5ms 81.8MB 747ms 30ms bun 1.2.17
csharp 1.cs 1008ms 4.1ms 35.4MB 1107ms 17ms dotnet 9.0.301

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3272ms 12ms 13.9MB 3167ms 100ms dotnet/aot 9.0.301
csharp 1.cs 3667ms 43ms 38.1MB 3650ms 133ms dotnet 9.0.301
javascript 3.js timeout 0.0ms 122.6MB 4957ms 43ms node 24.3.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 767ms 3.0ms 13.5MB 727ms 27ms dotnet/aot 9.0.301
csharp 1.cs 1011ms 7.1ms 37.6MB 1100ms 37ms dotnet 9.0.301
javascript 3.js 1089ms 1.6ms 73.5MB 1063ms 20ms node 24.3.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1871ms 1.6ms 10.5MB 7320ms 3ms dotnet/aot 9.0.301
csharp 3-m.cs 1923ms 1.9ms 30.0MB 7370ms 10ms dotnet 9.0.301
javascript 6-m.js 2192ms 31ms 119.8MB 8330ms 63ms node 24.3.0
csharp 3-m.cs 4682ms 158ms 27.7MB 17883ms 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 488ms 17ms 10.5MB 1800ms 0ms dotnet/aot 9.0.301
csharp 3-m.cs 632ms 70ms 29.9MB 1737ms 20ms dotnet 9.0.301
javascript 6-m.js 668ms 9.4ms 118.0MB 2350ms 63ms node 24.3.0
csharp 3-m.cs 1186ms 38ms 25.3MB 4467ms 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 136ms 11ms 10.5MB 447ms 7ms dotnet/aot 9.0.301
csharp 3-m.cs 252ms 16ms 28.8MB 463ms 13ms dotnet 9.0.301
javascript 6-m.js 278ms 3.8ms 114.6MB 847ms 60ms node 24.3.0
csharp 3-m.cs 345ms 3.8ms 27.6MB 1160ms 10ms mono 6.12.0