Programming Language and compiler
Benchmarks

Javascript VS C# benchmarks

Current benchmark data was generated on Mon Jun 23 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 934ms 5.4ms 205.2MB 963ms 147ms dotnet 9.0.301
javascript 1-m.js 947ms 18ms 176.8MB 1447ms 207ms bun 1.2.17
csharp 1.cs 978ms 18ms 174.5MB 967ms 137ms dotnet/aot 9.0.301
javascript 1.js 1054ms 6.2ms 453.4MB 980ms 223ms node 24.2.0
csharp 1.cs 1709ms 47ms 103.2MB 1913ms 217ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 100ms 0.8ms 77.5MB 77ms 27ms bun 1.2.17
csharp 1.cs 115ms 6.0ms 32.3MB 83ms 27ms dotnet/aot 9.0.301
javascript 1.js 127ms 1.5ms 81.2MB 130ms 20ms node 24.2.0
csharp 1.cs 144ms 2.8ms 44.3MB 120ms 13ms mono 6.12.0
csharp 1.cs 202ms 8.2ms 50.2MB 153ms 37ms 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 1629ms 9.3ms 189.9MB 1603ms 103ms node 24.2.0
csharp 1-m.cs 2165ms 84ms 50.8MB 7643ms 73ms dotnet/aot 9.0.301
javascript 1.js 2507ms 85ms 101.4MB 2553ms 67ms bun 1.2.17
csharp 1-m.cs 2925ms 171ms 72.9MB 9227ms 107ms dotnet 9.0.301

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 158ms 2.0ms 75.4MB 140ms 23ms node 24.2.0
csharp 1-m.cs 167ms 15ms 17.9MB 497ms 13ms dotnet/aot 9.0.301
javascript 1.js 200ms 4.1ms 86.8MB 237ms 30ms bun 1.2.17
csharp 1-m.cs 277ms 1.2ms 36.9MB 770ms 20ms dotnet 9.0.301

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 302ms 4.5ms 67.7MB 320ms 23ms node 24.2.0
javascript 1.js 519ms 3.3ms 75.7MB 497ms 20ms bun 1.2.17
csharp 1.cs 4093ms 8.3ms 18.3MB 4067ms 10ms dotnet/aot 9.0.301
csharp 1.cs 4958ms 14ms 37.8MB 4930ms 17ms dotnet 9.0.301

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 136ms 13ms 64.5MB 120ms 17ms node 24.2.0
javascript 1.js 512ms 13ms 65.7MB 487ms 23ms bun 1.2.17
csharp 1.cs 678ms 1.8ms 14.6MB 660ms 0ms dotnet/aot 9.0.301
csharp 1.cs 871ms 10ms 33.9MB 847ms 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 7.3ms 1.8ms 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 0.6ms 21.3MB 20ms 0ms mono 6.12.0
javascript 1.js 33ms 1.9ms 50.9MB 18ms 8ms node 24.2.0
csharp 1.cs 35ms 1.3ms 26.1MB 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 270ms 14ms 75.3MB 140ms 333ms bun 1.2.17
csharp 2-http2.cs 524ms 8.1ms 109.0MB 743ms 137ms dotnet 9.0.301
csharp 2-m.cs 586ms 27ms 144.8MB 750ms 493ms dotnet 9.0.301
csharp 2-http3.cs 684ms 7.2ms 145.8MB 1103ms 267ms dotnet 9.0.301
csharp 1-m.cs 746ms 32ms 168.5MB 1167ms 707ms dotnet 9.0.301
javascript 1.js 2465ms 105ms 269.7MB 2423ms 1127ms node 24.2.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 104ms 11ms 55.4MB 37ms 83ms bun 1.2.17
csharp 2-m.cs 352ms 4.7ms 87.3MB 390ms 177ms dotnet 9.0.301
javascript 1.js 375ms 26ms 85.9MB 360ms 133ms node 24.2.0
csharp 1-m.cs 394ms 5.0ms 98.7MB 550ms 213ms dotnet 9.0.301
csharp 2-http2.cs 447ms 4.4ms 86.0MB 513ms 87ms dotnet 9.0.301
csharp 2-http3.cs 509ms 8.5ms 94.4MB 593ms 117ms 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 65ms 1.2ms 62.5MB 40ms 13ms bun 1.2.17
javascript 1.js 104ms 1.9ms 74.8MB 90ms 20ms node 24.2.0
csharp 2.cs 317ms 5.0ms 68.8MB 280ms 30ms dotnet 9.0.301
csharp 1.cs 903ms 19ms 143.6MB 933ms 83ms dotnet 9.0.301

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 350ms 1.2ms 200.9MB 303ms 87ms bun 1.2.17
javascript 1.js 573ms 4.9ms 254.9MB 590ms 117ms node 24.2.0
csharp 2.cs 1577ms 59ms 230.4MB 1807ms 100ms dotnet 9.0.301
csharp 1.cs 2700ms 57ms 736.3MB 3283ms 423ms 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 0.9ms 9.9MB 87ms 0ms dotnet/aot 9.0.301
csharp 2.cs 150ms 3.3ms 21.1MB 137ms 0ms mono 6.12.0
csharp 2.cs 256ms 3.5ms 29.1MB 240ms 7ms dotnet 9.0.301
javascript 2.js 305ms 0.7ms 65.3MB 293ms 10ms node 24.2.0
javascript 1.js 565ms 3.2ms 63.6MB 550ms 13ms node 24.2.0
javascript 2.js 669ms 8.0ms 122.9MB 737ms 53ms bun 1.2.17
javascript 1.js 843ms 21ms 106.1MB 907ms 93ms bun 1.2.17
csharp 1.cs 1041ms 13ms 13.1MB 1027ms 0ms dotnet/aot 9.0.301
csharp 1.cs 1312ms 12ms 32.9MB 1300ms 13ms dotnet 9.0.301
csharp 1.cs 3351ms 22ms 43.7MB 3303ms 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 279ms 1.8ms 9.8MB 267ms 0ms dotnet/aot 9.0.301
csharp 2.cs 362ms 8.0ms 22.8MB 347ms 0ms mono 6.12.0
csharp 2.cs 400ms 2.8ms 29.5MB 387ms 7ms dotnet 9.0.301
javascript 2.js 835ms 6.9ms 71.9MB 820ms 17ms node 24.2.0
javascript 1.js 1619ms 16ms 70.0MB 1603ms 13ms node 24.2.0
javascript 2.js 1893ms 6.7ms 123.5MB 2067ms 73ms bun 1.2.17
javascript 1.js 2431ms 36ms 105.9MB 2720ms 160ms bun 1.2.17
csharp 1.cs 3081ms 17ms 13.3MB 3057ms 13ms dotnet/aot 9.0.301
csharp 1.cs 3721ms 174ms 32.6MB 3687ms 20ms dotnet 9.0.301
csharp 1.cs timeout 0.0ms 45.6MB 4943ms 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 0.2ms 9.8MB 40ms 0ms dotnet/aot 9.0.301
csharp 2.cs 94ms 2.6ms 22.9MB 80ms 0ms mono 6.12.0
javascript 2.js 163ms 1.1ms 59.8MB 157ms 10ms node 24.2.0
csharp 2.cs 166ms 3.1ms 29.3MB 143ms 7ms dotnet 9.0.301
javascript 1.js 166ms 2.3ms 61.0MB 150ms 10ms node 24.2.0
javascript 1.js 327ms 3.4ms 130.8MB 357ms 80ms bun 1.2.17
javascript 2.js 368ms 3.7ms 124.9MB 393ms 60ms bun 1.2.17
csharp 1.cs 1617ms 4.4ms 32.5MB 1613ms 7ms dotnet 9.0.301
csharp 1.cs 1819ms 13ms 28.6MB 1800ms 0ms mono 6.12.0
csharp 1.cs 1833ms 5.6ms 13.0MB 1817ms 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 473ms 10ms 137.8MB 617ms 117ms bun 1.2.17
csharp 2.cs 529ms 15ms 121.1MB 490ms 90ms dotnet/aot 9.0.301
javascript 1.js 565ms 6.5ms 230.7MB 567ms 110ms node 24.2.0
csharp 1.cs 591ms 6.0ms 143.1MB 560ms 107ms dotnet/aot 9.0.301
csharp 2.cs 689ms 3.3ms 136.1MB 640ms 97ms dotnet 9.0.301
csharp 1.cs 796ms 22ms 168.8MB 747ms 127ms dotnet 9.0.301
csharp 1.cs 1276ms 14ms 140.6MB 1483ms 157ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 116ms 2.9ms 84.8MB 100ms 33ms bun 1.2.17
csharp 2.cs 129ms 4.6ms 57.3MB 103ms 30ms dotnet/aot 9.0.301
javascript 1.js 160ms 2.6ms 101.3MB 157ms 40ms node 24.2.0
csharp 1.cs 161ms 5.6ms 74.5MB 120ms 53ms dotnet/aot 9.0.301
csharp 1.cs 265ms 3.3ms 69.4MB 240ms 30ms mono 6.12.0
csharp 2.cs 272ms 4.1ms 75.6MB 230ms 47ms dotnet 9.0.301
csharp 1.cs 287ms 3.4ms 89.4MB 250ms 63ms dotnet 9.0.301

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 9.cs 363ms 6.1ms 27.9MB 340ms 10ms dotnet 9.0.301
csharp 8.cs 371ms 2.5ms 9.9MB 360ms 0ms dotnet/aot 9.0.301
csharp 8.cs 431ms 6.0ms 27.8MB 413ms 10ms dotnet 9.0.301
javascript 6.js 456ms 0.7ms 59.0MB 450ms 0ms node 24.2.0
javascript 6.js 599ms 2.6ms 44.9MB 603ms 7ms bun 1.2.17
csharp 8.cs 1252ms 0.3ms 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 44ms 0.0ms 9.9MB 30ms 0ms dotnet/aot 9.0.301
javascript 6.js 79ms 1.4ms 58.9MB 63ms 10ms node 24.2.0
javascript 6.js 82ms 2.6ms 44.9MB 83ms 10ms bun 1.2.17
csharp 8.cs 96ms 0.6ms 27.8MB 77ms 10ms dotnet 9.0.301
csharp 9.cs 111ms 17ms 27.9MB 87ms 7ms dotnet 9.0.301
csharp 8.cs 166ms 2.0ms 20.8MB 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 2530ms 12ms 61.9MB 2537ms 10ms node 24.2.0
javascript 1.js 2803ms 2.3ms 82.0MB 2810ms 60ms bun 1.2.17
csharp 1.cs 2846ms 4.7ms 13.0MB 2810ms 23ms dotnet/aot 9.0.301
csharp 1.cs 2974ms 38ms 35.4MB 3033ms 43ms dotnet 9.0.301

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 704ms 57ms 60.1MB 707ms 10ms node 24.2.0
javascript 1.js 729ms 4.2ms 81.9MB 727ms 27ms bun 1.2.17
csharp 1.cs 739ms 49ms 13.0MB 723ms 7ms dotnet/aot 9.0.301
csharp 1.cs 1000ms 3.1ms 35.5MB 1090ms 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 3234ms 15ms 13.9MB 3143ms 90ms dotnet/aot 9.0.301
csharp 1.cs 3666ms 54ms 38.4MB 3690ms 117ms dotnet 9.0.301
javascript 3.js 4612ms 24ms 122.4MB 4567ms 43ms node 24.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 753ms 6.8ms 13.4MB 720ms 17ms dotnet/aot 9.0.301
csharp 1.cs 1012ms 9.9ms 37.6MB 1103ms 37ms dotnet 9.0.301
javascript 3.js 1016ms 4.2ms 74.0MB 997ms 17ms node 24.2.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1888ms 32ms 10.5MB 7287ms 7ms dotnet/aot 9.0.301
csharp 3-m.cs 1932ms 11ms 30.1MB 7360ms 17ms dotnet 9.0.301
javascript 6-m.js 2170ms 4.5ms 118.6MB 8280ms 63ms node 24.2.0
csharp 3-m.cs 4684ms 65ms 27.0MB 17910ms 10ms 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 1.2ms 10.1MB 1823ms 7ms dotnet/aot 9.0.301
javascript 6-m.js 654ms 2.1ms 118.9MB 2317ms 63ms node 24.2.0
csharp 3-m.cs 666ms 1.4ms 29.9MB 1670ms 10ms dotnet 9.0.301
csharp 3-m.cs 1209ms 1.7ms 25.9MB 4553ms 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 10.8MB 450ms 3ms dotnet/aot 9.0.301
csharp 3-m.cs 251ms 7.7ms 29.0MB 460ms 10ms dotnet 9.0.301
javascript 6-m.js 271ms 4.8ms 115.9MB 830ms 53ms node 24.2.0
csharp 3-m.cs 354ms 11ms 25.4MB 1197ms 3ms mono 6.12.0