Programming Language and compiler
Benchmarks

Go VS Nim benchmarks

Current benchmark data was generated on Sun Jun 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
nim 2.nim 779ms 1.2ms 34.4MB 760ms 3ms nim 2.2.4
nim 2.nim 963ms 9.3ms 35.2MB 940ms 10ms nim/clang 2.2.4
go 1.go 1201ms 11ms 55.0MB 1180ms 10ms tinygo 0.37.0
go 1-m.go 2364ms 13ms 41.9MB 5290ms 33ms go 1.24.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 75ms 4.0ms 5.5MB 63ms 0ms nim 2.2.4
nim 2.nim 91ms 2.7ms 5.8MB 80ms 0ms nim/clang 2.2.4
go 1.go 113ms 2.0ms 5.6MB 100ms 0ms tinygo 0.37.0
go 1-m.go 209ms 2.8ms 8.1MB 367ms 10ms go 1.24.3

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-m.go 485ms 69ms 13.5MB 1843ms 0ms go 1.24.3
go 1.go 715ms 1.6ms 269.3MB 653ms 50ms tinygo 0.37.0
nim 1.nim timeout 0.0ms 574.3MB 2627ms 1900ms nim 2.2.4
nim 1.nim timeout 0.0ms 574.8MB 2630ms 1897ms nim/clang 2.2.4

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-m.go 39ms 4.1ms 7.5MB 127ms 0ms go 1.24.3
go 1.go 64ms 0.8ms 68.0MB 43ms 10ms tinygo 0.37.0
nim 1.nim 4103ms 11ms 519.8MB 2090ms 1590ms nim/clang 2.2.4
nim 1.nim 4106ms 11ms 519.3MB 2163ms 1517ms nim 2.2.4

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 117ms 0.4ms 8.8MB 110ms 0ms go 1.24.3

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 34ms 1.3ms 8.4MB 27ms 0ms go 1.24.3

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 683ms 22ms 5.5MB 2597ms 0ms go 1.24.3
go 3.go 2009ms 15ms 49.0MB 1987ms 10ms tinygo 0.37.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 73ms 0.3ms 5.5MB 200ms 0ms go 1.24.3
go 3.go 189ms 1.2ms 49.4MB 170ms 7ms tinygo 0.37.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 124ms 0.9ms 5.6MB 373ms 0ms go 1.24.3
nim 2.nim 189ms 1.2ms 1.5MB 180ms 0ms nim 2.2.4
nim 2.nim 241ms 2.6ms 1.8MB 230ms 0ms nim/clang 2.2.4
nim 1.nim 535ms 1.0ms 1.8MB 430ms 90ms nim/clang 2.2.4
nim 1.nim 558ms 2.5ms 1.5MB 473ms 67ms nim 2.2.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 17ms 0.4ms 5.6MB 30ms 0ms go 1.24.3
nim 2.nim 22ms 0.1ms 1.5MB 13ms 0ms nim 2.2.4
nim 2.nim 27ms 1.0ms 1.8MB 20ms 0ms nim/clang 2.2.4
nim 1.nim 57ms 0.5ms 1.8MB 40ms 3ms nim/clang 2.2.4
nim 1.nim 57ms 0.2ms 1.5MB 40ms 3ms nim 2.2.4

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 0.8ms 0.1ms 0.4MB 0ms 0ms tinygo 0.37.0
nim 1.nim 0.9ms 0.0ms 1.5MB 0ms 0ms nim 2.2.4
nim 1.nim 1.1ms 0.0ms 1.9MB 0ms 0ms nim/clang 2.2.4
go 1.go 1.4ms 0.0ms 3.4MB 0ms 0ms go 1.24.3

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-http2.go 117ms 4.7ms 58.2MB 340ms 73ms go 1.24.3
go 2-m.go 359ms 31ms 172.9MB 633ms 593ms go 1.24.3
go 1-m.go 390ms 0.5ms 178.5MB 717ms 630ms go 1.24.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-http2.go 31ms 2.7ms 25.5MB 57ms 17ms go 1.24.3
go 2-m.go 64ms 7.2ms 37.0MB 83ms 87ms go 1.24.3
go 1-m.go 65ms 9.9ms 37.0MB 83ms 93ms go 1.24.3

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 2-ffi.go 45ms 0.9ms 41.2MB 40ms 0ms go 1.24.3
go 1.go 142ms 3.5ms 18.6MB 137ms 0ms go 1.24.3

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 2-ffi.go 253ms 11ms 163.1MB 243ms 47ms go 1.24.3
go 1.go 738ms 4.5ms 105.1MB 727ms 10ms go 1.24.3

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 7-m.go 679ms 12ms 39.2MB 2393ms 20ms go 1.24.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 7-m.go 131ms 1.0ms 32.2MB 350ms 20ms go 1.24.3

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 111ms 2.3ms 1.6MB 100ms 0ms nim/clang 2.2.4
nim 2.nim 114ms 1.7ms 1.4MB 110ms 0ms nim 2.2.4
go 3.go 120ms 4.7ms 3.5MB 113ms 0ms go 1.24.3
go 3.go 132ms 2.8ms 0.5MB 123ms 0ms tinygo 0.37.0
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 328ms 1.4ms 1.6MB 320ms 0ms nim/clang 2.2.4
nim 2.nim 333ms 1.4ms 1.4MB 323ms 0ms nim 2.2.4
go 3.go 384ms 3.9ms 0.5MB 373ms 0ms tinygo 0.37.0
go 3.go 392ms 5.4ms 3.5MB 383ms 0ms go 1.24.3
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 48ms 0.6ms 1.5MB 40ms 0ms nim/clang 2.2.4
go 3.go 51ms 2.7ms 3.5MB 40ms 0ms go 1.24.3
nim 2.nim 51ms 0.8ms 1.3MB 40ms 0ms nim 2.2.4
go 3.go 64ms 1.5ms 0.4MB 57ms 0ms tinygo 0.37.0
nim 1.nim 476ms 7.0ms 1.5MB 467ms 0ms nim/clang 2.2.4
nim 1.nim 480ms 4.8ms 1.3MB 473ms 0ms nim 2.2.4

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 389ms 1.0ms 4.8MB 380ms 0ms nim/clang 2.2.4
nim 1.nim 578ms 2.7ms 4.5MB 567ms 0ms nim 2.2.4
go 1.go 3230ms 12ms 7.7MB 3223ms 0ms go 1.24.3
go 1.go 4079ms 17ms 3.4MB 4070ms 0ms tinygo 0.37.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 18ms 0.2ms 1.9MB 10ms 0ms nim/clang 2.2.4
nim 1.nim 26ms 0.6ms 1.6MB 20ms 0ms nim 2.2.4
go 1.go 139ms 3.4ms 3.6MB 130ms 0ms go 1.24.3
go 1.go 172ms 3.3ms 0.5MB 167ms 0ms tinygo 0.37.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 546ms 4.1ms 33.9MB 530ms 3ms nim 2.2.4
nim 1.nim 627ms 11ms 35.2MB 607ms 10ms nim/clang 2.2.4
go 1.go 877ms 10ms 63.2MB 857ms 10ms tinygo 0.37.0
go 2.go 1100ms 11ms 55.0MB 1080ms 10ms tinygo 0.37.0
go 1-m.go 1481ms 35ms 41.1MB 3197ms 37ms go 1.24.3
go 2-m.go 1665ms 17ms 43.1MB 3667ms 40ms go 1.24.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 119ms 2.2ms 9.6MB 110ms 0ms nim 2.2.4
nim 1.nim 137ms 5.9ms 9.9MB 123ms 0ms nim/clang 2.2.4
go 1.go 173ms 0.8ms 9.8MB 160ms 0ms tinygo 0.37.0
go 2.go 205ms 6.1ms 17.1MB 190ms 0ms tinygo 0.37.0
go 1-m.go 333ms 1.3ms 12.2MB 673ms 23ms go 1.24.3
go 2-m.go 373ms 2.6ms 13.9MB 797ms 23ms go 1.24.3

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 318ms 0.5ms 1.8MB 310ms 0ms nim 2.2.4
nim 2.nim 344ms 2.8ms 2.0MB 337ms 0ms nim/clang 2.2.4
go 1.go 347ms 4.4ms 0.4MB 340ms 0ms tinygo 0.37.0
go 1.go 351ms 3.3ms 3.5MB 343ms 0ms go 1.24.3

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 34ms 0.6ms 1.8MB 30ms 0ms nim 2.2.4
nim 2.nim 37ms 1.1ms 2.0MB 30ms 0ms nim/clang 2.2.4
go 1.go 38ms 1.2ms 0.4MB 30ms 0ms tinygo 0.37.0
go 1.go 38ms 0.5ms 3.5MB 30ms 0ms go 1.24.3

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 264ms 6.1ms 41.5MB 250ms 0ms nim 2.2.4
go 1.go 277ms 8.7ms 39.8MB 267ms 0ms tinygo 0.37.0
go 1.go 291ms 2.9ms 71.6MB 277ms 3ms go 1.24.3
nim 1.nim 316ms 7.7ms 41.8MB 300ms 0ms nim/clang 2.2.4
go 2.go 424ms 4.8ms 21.3MB 413ms 0ms tinygo 0.37.0
go 2.go 739ms 2.5ms 21.6MB 723ms 10ms go 1.24.3

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 52ms 2.1ms 11.5MB 47ms 0ms nim 2.2.4
go 1.go 57ms 1.1ms 10.3MB 50ms 0ms tinygo 0.37.0
go 1.go 58ms 2.3ms 21.6MB 50ms 0ms go 1.24.3
nim 1.nim 63ms 5.6ms 11.8MB 53ms 0ms nim/clang 2.2.4
go 2.go 107ms 2.9ms 4.9MB 97ms 0ms tinygo 0.37.0
go 2.go 180ms 1.4ms 5.9MB 170ms 0ms go 1.24.3

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 8.go 1178ms 8.3ms 8.6MB 1163ms 7ms go 1.24.3

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 8.go 276ms 1.1ms 8.6MB 267ms 0ms go 1.24.3

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1643ms 3.6ms 152.4MB 1610ms 20ms nim/clang 2.2.4
nim 1.nim 1672ms 3.8ms 152.1MB 1640ms 20ms nim 2.2.4
go 3.go timeout 0.0ms 122.2MB 4983ms 50ms go 1.24.3
go 3.go timeout 0.0ms 133.0MB 4973ms 13ms tinygo 0.37.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 2.8ms 16.8MB 160ms 0ms nim/clang 2.2.4
nim 1.nim 176ms 2.8ms 17.4MB 160ms 0ms nim 2.2.4
go 3.go 1756ms 39ms 20.0MB 1740ms 17ms go 1.24.3
go 3.go 2260ms 24ms 26.2MB 2247ms 0ms tinygo 0.37.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 0-ffi.go 92ms 0.1ms 5.2MB 90ms 0ms go 1.24.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 0-ffi.go 25ms 0.6ms 5.2MB 20ms 0ms go 1.24.3

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 1909ms 15ms 5.6MB 7397ms 7ms go 1.24.3
nim 1.nim 3587ms 1.2ms 1.6MB 3580ms 0ms nim/clang 2.2.4
nim 1.nim 3604ms 3.0ms 1.8MB 3593ms 0ms nim 2.2.4
go 1.go 3690ms 9.5ms 5.6MB 3687ms 0ms go 1.24.3
go 1.go timeout 0.0ms 0.5MB 4990ms 0ms tinygo 0.37.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 481ms 1.5ms 5.5MB 1840ms 0ms go 1.24.3
nim 1.nim 898ms 0.5ms 1.5MB 890ms 0ms nim/clang 2.2.4
nim 1.nim 903ms 2.7ms 1.3MB 893ms 0ms nim 2.2.4
go 1.go 929ms 22ms 3.5MB 923ms 0ms go 1.24.3
go 1.go 1397ms 0.5ms 0.5MB 1390ms 0ms tinygo 0.37.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 125ms 0.3ms 5.5MB 453ms 0ms go 1.24.3
nim 1.nim 226ms 0.4ms 1.5MB 220ms 0ms nim/clang 2.2.4
nim 1.nim 229ms 1.5ms 1.3MB 220ms 0ms nim 2.2.4
go 1.go 231ms 0.6ms 3.5MB 220ms 0ms go 1.24.3
go 1.go 351ms 0.3ms 0.4MB 340ms 0ms tinygo 0.37.0