Programming Language and compiler
Benchmarks

C# VS Javascript benchmarks

Current benchmark data was generated on Mon May 19 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 937ms 10ms 185.4MB 937ms 137ms dotnet 9.0.300
javascript 1-m.js 983ms 44ms 182.9MB 1513ms 227ms bun 1.2.13
javascript 1.js 1066ms 5.1ms 468.4MB 1000ms 220ms node 24.0.2
csharp 1.cs 1089ms 203ms 175.6MB 1003ms 140ms dotnet/aot 9.0.300
csharp 1.cs 1663ms 38ms 98.4MB 1863ms 183ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 102ms 0.9ms 77.4MB 83ms 23ms bun 1.2.13
javascript 1.js 130ms 2.5ms 80.7MB 130ms 27ms node 24.0.2
csharp 1.cs 142ms 2.5ms 44.0MB 123ms 10ms mono 6.12.0
csharp 1.cs 161ms 19ms 31.8MB 100ms 30ms dotnet/aot 9.0.300
csharp 1.cs 203ms 9.4ms 50.0MB 160ms 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 1619ms 9.4ms 188.9MB 1593ms 103ms node 24.0.2
csharp 1-m.cs 2148ms 121ms 48.9MB 7577ms 67ms dotnet/aot 9.0.300
javascript 1.js 2477ms 8.3ms 99.5MB 2507ms 57ms bun 1.2.13
csharp 1-m.cs 2876ms 225ms 73.0MB 9937ms 117ms dotnet 9.0.300

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 149ms 3.9ms 20.9MB 447ms 10ms dotnet/aot 9.0.300
javascript 1.js 158ms 3.0ms 74.0MB 143ms 23ms node 24.0.2
javascript 1.js 198ms 1.8ms 85.0MB 220ms 30ms bun 1.2.13
csharp 1-m.cs 298ms 11ms 37.4MB 860ms 23ms dotnet 9.0.300

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 285ms 5.4ms 66.5MB 297ms 27ms node 24.0.2
javascript 1.js 520ms 3.2ms 75.8MB 493ms 20ms bun 1.2.13
csharp 1.cs 4097ms 4.2ms 18.3MB 4073ms 10ms dotnet/aot 9.0.300
csharp 1.cs 4958ms 17ms 37.6MB 4930ms 20ms dotnet 9.0.300

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 127ms 2.1ms 62.6MB 113ms 17ms node 24.0.2
javascript 1.js 499ms 1.6ms 65.8MB 480ms 17ms bun 1.2.13
csharp 1.cs 679ms 2.3ms 14.5MB 660ms 7ms dotnet/aot 9.0.300
csharp 1.cs 869ms 4.4ms 33.8MB 847ms 10ms dotnet 9.0.300

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 130ms 1.4ms 25.4MB 353ms 97ms dotnet/aot 9.0.300
csharp 5-m.cs 190ms 8.2ms 39.0MB 473ms 110ms dotnet 9.0.300
csharp 5-m.cs 239ms 13ms 49.4MB 680ms 103ms mono 6.12.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 5-m.cs 25ms 1.5ms 16.1MB 33ms 17ms dotnet/aot 9.0.300
csharp 5-m.cs 62ms 2.0ms 37.3MB 87ms 17ms dotnet 9.0.300
csharp 5-m.cs 73ms 0.4ms 31.2MB 103ms 27ms mono 6.12.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 7.5ms 2.9ms 9.6MB 0ms 0ms dotnet/aot 9.0.300
javascript 1.js 13ms 0.6ms 31.9MB 0ms 0ms bun 1.2.13
csharp 1.cs 32ms 1.0ms 23.9MB 20ms 2ms mono 6.12.0
javascript 1.js 32ms 0.5ms 50.0MB 16ms 8ms node 24.0.2
csharp 1.cs 35ms 0.3ms 26.1MB 20ms 0ms 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 265ms 10ms 76.7MB 137ms 343ms bun 1.2.13
csharp 2-http2.cs 537ms 2.6ms 108.1MB 743ms 150ms dotnet 9.0.300
csharp 2-m.cs 586ms 10ms 140.8MB 750ms 510ms dotnet 9.0.300
csharp 2-http3.cs 705ms 14ms 145.4MB 1130ms 247ms dotnet 9.0.300
csharp 1-m.cs 712ms 21ms 168.0MB 1107ms 663ms dotnet 9.0.300
javascript 1.js 2754ms 259ms 289.5MB 2697ms 1270ms node 24.0.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 94ms 4.8ms 55.0MB 33ms 70ms bun 1.2.13
csharp 2-m.cs 352ms 3.2ms 86.9MB 380ms 183ms dotnet 9.0.300
javascript 1.js 353ms 2.2ms 84.3MB 343ms 123ms node 24.0.2
csharp 1-m.cs 397ms 9.9ms 98.1MB 547ms 220ms dotnet 9.0.300
csharp 2-http2.cs 445ms 7.3ms 86.0MB 513ms 77ms dotnet 9.0.300
csharp 2-http3.cs 511ms 2.0ms 93.3MB 600ms 117ms 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 75ms 8.3ms 67.5MB 47ms 20ms bun 1.2.13
javascript 1.js 106ms 3.5ms 73.9MB 87ms 23ms node 24.0.2
csharp 2.cs 306ms 4.4ms 68.6MB 273ms 37ms dotnet 9.0.300
csharp 1.cs 810ms 79ms 143.6MB 820ms 70ms dotnet 9.0.300

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 390ms 2.0ms 235.3MB 333ms 100ms bun 1.2.13
javascript 1.js 590ms 2.0ms 253.9MB 593ms 127ms node 24.0.2
csharp 2.cs 1499ms 4.2ms 232.6MB 1640ms 93ms dotnet 9.0.300
csharp 1.cs 2651ms 20ms 718.1MB 3213ms 433ms dotnet 9.0.300

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6-m.cs 488ms 3.5ms 46.2MB 1320ms 20ms dotnet/aot 9.0.300
csharp 6-m.cs 722ms 26ms 68.3MB 1957ms 30ms dotnet 9.0.300
csharp 6-m.cs 1021ms 12ms 69.9MB 2960ms 30ms mono 6.12.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6-m.cs 100ms 5.3ms 36.6MB 170ms 17ms dotnet/aot 9.0.300
csharp 6-m.cs 188ms 5.7ms 58.6MB 290ms 27ms dotnet 9.0.300
csharp 6-m.cs 194ms 4.9ms 51.0MB 377ms 17ms mono 6.12.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 2.cs 93ms 0.6ms 9.6MB 80ms 0ms dotnet/aot 9.0.300
csharp 2.cs 148ms 2.9ms 21.2MB 137ms 3ms mono 6.12.0
csharp 2.cs 255ms 4.3ms 29.5MB 233ms 10ms dotnet 9.0.300
javascript 2.js 305ms 1.5ms 64.5MB 297ms 10ms node 24.0.2
javascript 1.js 571ms 4.9ms 63.0MB 553ms 10ms node 24.0.2
javascript 2.js 665ms 6.1ms 124.1MB 717ms 50ms bun 1.2.13
javascript 1.js 825ms 5.5ms 109.9MB 920ms 73ms bun 1.2.13
csharp 1.cs 1040ms 5.1ms 13.3MB 1020ms 10ms dotnet/aot 9.0.300
csharp 1.cs 1302ms 18ms 33.1MB 1287ms 20ms dotnet 9.0.300
csharp 1.cs 3346ms 4.8ms 45.5MB 3297ms 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 263ms 3.9ms 9.8MB 247ms 0ms dotnet/aot 9.0.300
csharp 2.cs 378ms 23ms 22.6MB 360ms 0ms mono 6.12.0
csharp 2.cs 403ms 7.6ms 29.1MB 383ms 10ms dotnet 9.0.300
javascript 2.js 835ms 0.7ms 70.6MB 817ms 20ms node 24.0.2
javascript 1.js 1622ms 1.9ms 69.6MB 1603ms 13ms node 24.0.2
javascript 2.js 1852ms 9.1ms 124.3MB 2033ms 73ms bun 1.2.13
javascript 1.js 2389ms 8.5ms 109.5MB 2717ms 163ms bun 1.2.13
csharp 1.cs 3118ms 26ms 13.3MB 3090ms 13ms dotnet/aot 9.0.300
csharp 1.cs 3650ms 14ms 32.8MB 3633ms 17ms dotnet 9.0.300
csharp 1.cs timeout 0.0ms 45.6MB 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 51ms 1.0ms 9.6MB 40ms 0ms dotnet/aot 9.0.300
csharp 2.cs 94ms 1.8ms 20.8MB 80ms 0ms mono 6.12.0
javascript 2.js 166ms 2.3ms 59.0MB 160ms 10ms node 24.0.2
csharp 2.cs 166ms 3.5ms 29.5MB 150ms 3ms dotnet 9.0.300
javascript 1.js 169ms 1.1ms 60.0MB 160ms 10ms node 24.0.2
javascript 1.js 320ms 1.9ms 114.0MB 363ms 73ms bun 1.2.13
javascript 2.js 361ms 1.8ms 123.9MB 380ms 53ms bun 1.2.13
csharp 1.cs 1616ms 3.8ms 32.5MB 1607ms 10ms dotnet 9.0.300
csharp 1.cs 1820ms 10ms 28.8MB 1803ms 0ms mono 6.12.0
csharp 1.cs 1824ms 6.5ms 13.0MB 1807ms 0ms dotnet/aot 9.0.300

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 4.cs 393ms 90ms 37.2MB 370ms 10ms dotnet 9.0.300
csharp 2.cs 542ms 30ms 39.8MB 513ms 17ms dotnet 9.0.300
csharp 1.cs 2032ms 8.7ms 36.5MB 2003ms 10ms dotnet 9.0.300
csharp 3.cs 2353ms 7.5ms 16.5MB 2340ms 0ms dotnet/aot 9.0.300
csharp 3.cs 2458ms 7.7ms 36.8MB 2430ms 13ms dotnet 9.0.300
csharp 1.cs 3952ms 112ms 16.2MB 3937ms 0ms dotnet/aot 9.0.300
csharp 1.cs timeout 0.0ms 24.1MB 4983ms 3ms mono 6.12.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 4.cs 80ms 2.2ms 34.4MB 57ms 10ms dotnet 9.0.300
csharp 3.cs 110ms 2.9ms 13.5MB 100ms 0ms dotnet/aot 9.0.300
csharp 2.cs 111ms 4.3ms 36.8MB 87ms 13ms dotnet 9.0.300
csharp 1.cs 138ms 2.6ms 33.5MB 117ms 10ms dotnet 9.0.300
csharp 3.cs 175ms 5.6ms 33.8MB 150ms 10ms dotnet 9.0.300
csharp 1.cs 175ms 5.9ms 13.5MB 163ms 0ms dotnet/aot 9.0.300
csharp 1.cs 574ms 7.0ms 23.7MB 557ms 3ms 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 486ms 0.8ms 138.7MB 660ms 113ms bun 1.2.13
csharp 2.cs 537ms 11ms 121.0MB 490ms 90ms dotnet/aot 9.0.300
javascript 1.js 579ms 3.1ms 229.5MB 577ms 120ms node 24.0.2
csharp 1.cs 614ms 11ms 143.3MB 563ms 120ms dotnet/aot 9.0.300
csharp 2.cs 684ms 6.9ms 136.2MB 630ms 97ms dotnet 9.0.300
csharp 1.cs 764ms 21ms 161.6MB 710ms 117ms dotnet 9.0.300
csharp 1.cs 1297ms 5.6ms 140.0MB 1507ms 167ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 119ms 4.5ms 85.8MB 107ms 30ms bun 1.2.13
csharp 2.cs 137ms 9.3ms 57.3MB 110ms 30ms dotnet/aot 9.0.300
csharp 1.cs 158ms 4.3ms 74.7MB 120ms 50ms dotnet/aot 9.0.300
javascript 1.js 163ms 3.2ms 100.3MB 160ms 33ms node 24.0.2
csharp 2.cs 262ms 6.1ms 75.2MB 227ms 37ms dotnet 9.0.300
csharp 1.cs 266ms 1.9ms 69.4MB 240ms 37ms mono 6.12.0
csharp 1.cs 272ms 2.6ms 88.1MB 243ms 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 363ms 3.7ms 27.6MB 340ms 7ms dotnet 9.0.300
csharp 8.cs 372ms 0.9ms 9.8MB 360ms 0ms dotnet/aot 9.0.300
csharp 8.cs 423ms 2.3ms 27.6MB 403ms 3ms dotnet 9.0.300
javascript 6.js 458ms 3.2ms 58.0MB 443ms 10ms node 24.0.2
javascript 6.js 604ms 7.0ms 44.5MB 603ms 3ms bun 1.2.13
csharp 8.cs 1252ms 5.3ms 22.4MB 1240ms 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 0.5ms 9.8MB 30ms 0ms dotnet/aot 9.0.300
javascript 6.js 80ms 1.6ms 58.2MB 70ms 7ms node 24.0.2
javascript 6.js 82ms 2.8ms 44.5MB 77ms 3ms bun 1.2.13
csharp 9.cs 93ms 1.5ms 27.8MB 73ms 10ms dotnet 9.0.300
csharp 8.cs 95ms 2.7ms 27.6MB 77ms 7ms dotnet 9.0.300
csharp 8.cs 162ms 0.3ms 22.8MB 150ms 0ms mono 6.12.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 325ms 6.5ms 78.7MB 307ms 3ms dotnet/aot 9.0.300
csharp 1.cs 361ms 8.4ms 96.1MB 333ms 13ms dotnet 9.0.300
csharp 2.cs 394ms 2.3ms 17.5MB 377ms 0ms dotnet/aot 9.0.300
csharp 2.cs 399ms 6.4ms 35.4MB 380ms 7ms dotnet 9.0.300
csharp 1.cs 560ms 6.0ms 82.0MB 540ms 10ms mono 6.12.0
csharp 2.cs 1908ms 73ms 29.5MB 1887ms 3ms mono 6.12.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 63ms 0.6ms 24.8MB 47ms 0ms dotnet/aot 9.0.300
csharp 1.cs 99ms 2.3ms 42.3MB 77ms 7ms dotnet 9.0.300
csharp 2.cs 102ms 1.9ms 11.9MB 90ms 0ms dotnet/aot 9.0.300
csharp 2.cs 129ms 0.7ms 29.9MB 113ms 7ms dotnet 9.0.300
csharp 1.cs 144ms 1.4ms 36.4MB 130ms 3ms mono 6.12.0
csharp 2.cs 494ms 11ms 21.5MB 480ms 0ms mono 6.12.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 3259ms 15ms 13.9MB 3147ms 107ms dotnet/aot 9.0.300
csharp 1.cs 3630ms 50ms 38.0MB 3650ms 117ms dotnet 9.0.300
javascript 3.js 4622ms 14ms 122.3MB 4573ms 47ms node 24.0.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 761ms 6.7ms 13.5MB 727ms 20ms dotnet/aot 9.0.300
csharp 1.cs 990ms 7.0ms 37.5MB 1083ms 37ms dotnet 9.0.300
javascript 3.js 1012ms 8.0ms 73.2MB 993ms 13ms node 24.0.2

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6.cs 1758ms 15ms 418.7MB 1653ms 153ms dotnet/aot 9.0.300
csharp 5.cs 2138ms 7.7ms 443.4MB 2173ms 187ms dotnet 9.0.300
csharp 6.cs 2760ms 95ms 438.8MB 2717ms 170ms dotnet 9.0.300
csharp 5.cs 4264ms 20ms 419.0MB 4173ms 147ms dotnet/aot 9.0.300

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6.cs 189ms 0.8ms 47.5MB 163ms 17ms dotnet/aot 9.0.300
csharp 5.cs 291ms 6.5ms 72.6MB 260ms 30ms dotnet 9.0.300
csharp 6.cs 396ms 4.6ms 70.3MB 357ms 33ms dotnet 9.0.300
csharp 5.cs 439ms 1.8ms 47.4MB 413ms 20ms dotnet/aot 9.0.300

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2584ms 16ms 61.1MB 2590ms 10ms node 24.0.2
csharp 1.cs 2831ms 17ms 13.1MB 2790ms 27ms dotnet/aot 9.0.300
javascript 1.js 2875ms 42ms 82.4MB 2890ms 57ms bun 1.2.13
csharp 1.cs 2950ms 24ms 35.1MB 3023ms 40ms dotnet 9.0.300

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 687ms 3.9ms 58.5MB 697ms 10ms node 24.0.2
csharp 1.cs 717ms 5.6ms 12.8MB 697ms 7ms dotnet/aot 9.0.300
javascript 1.js 746ms 8.0ms 82.4MB 747ms 30ms bun 1.2.13
csharp 1.cs 1001ms 5.2ms 35.1MB 1100ms 17ms dotnet 9.0.300

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1877ms 33ms 10.4MB 7243ms 3ms dotnet/aot 9.0.300
csharp 3-m.cs 1988ms 108ms 30.3MB 7253ms 20ms dotnet 9.0.300
javascript 6-m.js 2184ms 8.5ms 118.8MB 8193ms 60ms node 24.0.2
csharp 3-m.cs 4713ms 116ms 24.7MB 18030ms 17ms 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 1.5ms 10.5MB 1810ms 0ms dotnet/aot 9.0.300
csharp 3-m.cs 535ms 3.2ms 30.1MB 1887ms 10ms dotnet 9.0.300
javascript 6-m.js 663ms 3.7ms 117.6MB 2293ms 53ms node 24.0.2
csharp 3-m.cs 1236ms 42ms 25.8MB 4650ms 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 128ms 1.5ms 10.5MB 450ms 0ms dotnet/aot 9.0.300
csharp 3-m.cs 176ms 1.1ms 28.5MB 503ms 10ms dotnet 9.0.300
javascript 6-m.js 269ms 2.4ms 112.1MB 823ms 50ms node 24.0.2
csharp 3-m.cs 356ms 11ms 25.4MB 1197ms 3ms mono 6.12.0