Programming Language and compiler
Benchmarks

Go VS Nim 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
nim 2.nim 825ms 37ms 34.9MB 807ms 7ms nim 2.2.4
nim 2.nim 999ms 22ms 34.7MB 980ms 7ms nim/clang 2.2.4
go 1.go 1752ms 19ms 51.9MB 1730ms 10ms tinygo 0.38.0
go 1-m.go 2372ms 7.5ms 42.0MB 5283ms 43ms go 1.24.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 77ms 1.9ms 5.5MB 67ms 0ms nim 2.2.4
nim 2.nim 93ms 2.8ms 5.8MB 83ms 0ms nim/clang 2.2.4
go 1.go 154ms 0.3ms 5.0MB 140ms 0ms tinygo 0.38.0
go 1-m.go 209ms 2.0ms 7.9MB 373ms 7ms go 1.24.4

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-m.go 521ms 70ms 15.5MB 2027ms 3ms go 1.24.4
go 1.go timeout 0.0ms 13.3MB 2440ms 17150ms tinygo 0.38.0
nim 1.nim timeout 0.0ms 568.3MB 2650ms 1870ms nim 2.2.4
nim 1.nim timeout 0.0ms 572.7MB 2573ms 1947ms 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 47ms 13ms 7.4MB 160ms 0ms go 1.24.4
go 1-m.go 619ms 19ms 4.3MB 277ms 1990ms tinygo 0.38.0
nim 1.nim 4147ms 10.0ms 519.8MB 2113ms 1603ms nim/clang 2.2.4
nim 1.nim 4190ms 13ms 518.2MB 2160ms 1600ms nim 2.2.4

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 118ms 1.1ms 8.5MB 107ms 0ms go 1.24.4

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 34ms 0.1ms 8.2MB 30ms 0ms go 1.24.4

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 673ms 1.0ms 5.6MB 2600ms 0ms go 1.24.4
go 3-m.go 726ms 2.7ms 2.9MB 2673ms 37ms tinygo 0.38.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 74ms 0.2ms 5.5MB 197ms 0ms go 1.24.4
go 3-m.go 102ms 2.8ms 2.9MB 187ms 33ms tinygo 0.38.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 125ms 0.3ms 7.5MB 380ms 0ms go 1.24.4
nim 2.nim 188ms 2.2ms 1.5MB 180ms 0ms nim 2.2.4
nim 2.nim 240ms 0.1ms 1.8MB 230ms 0ms nim/clang 2.2.4
nim 1.nim 542ms 2.9ms 1.9MB 450ms 80ms nim/clang 2.2.4
nim 1.nim 561ms 3.3ms 1.5MB 470ms 77ms 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 0.6ms 7.6MB 30ms 0ms go 1.24.4
nim 2.nim 21ms 0.1ms 1.5MB 10ms 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 37ms 3ms nim/clang 2.2.4
nim 1.nim 59ms 0.6ms 1.5MB 40ms 7ms nim 2.2.4

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 0.7ms 0.0ms 0.3MB 0ms 0ms tinygo 0.38.0
nim 1.nim 1.0ms 0.0ms 1.6MB 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 0.1ms 3.4MB 0ms 0ms go 1.24.4

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-http2.go 117ms 4.2ms 50.2MB 330ms 83ms go 1.24.4
go 1-m.go 371ms 8.7ms 171.0MB 663ms 577ms go 1.24.4
go 2-m.go 410ms 5.9ms 174.9MB 743ms 647ms go 1.24.4

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-http2.go 22ms 12ms 23.5MB 55ms 15ms go 1.24.4
go 1-m.go 64ms 2.6ms 30.5MB 87ms 93ms go 1.24.4
go 2-m.go 68ms 5.4ms 38.9MB 87ms 93ms go 1.24.4

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 2-ffi.go 46ms 0.4ms 41.2MB 37ms 7ms go 1.24.4
go 1.go 141ms 2.5ms 18.6MB 133ms 0ms go 1.24.4

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 2-ffi.go 253ms 3.8ms 153.2MB 243ms 40ms go 1.24.4
go 1.go 742ms 5.5ms 105.0MB 730ms 13ms go 1.24.4

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 7-m.go 676ms 7.8ms 38.9MB 2393ms 23ms go 1.24.4

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 7-m.go 130ms 2.8ms 23.9MB 343ms 23ms go 1.24.4

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 113ms 2.8ms 1.8MB 107ms 0ms nim/clang 2.2.4
nim 2.nim 116ms 1.5ms 1.4MB 110ms 0ms nim 2.2.4
go 3.go 121ms 1.2ms 3.5MB 113ms 0ms go 1.24.4
go 3.go 132ms 2.6ms 0.4MB 127ms 0ms tinygo 0.38.0
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 6.2ms 1.6MB 317ms 0ms nim/clang 2.2.4
nim 2.nim 336ms 4.0ms 1.4MB 330ms 0ms nim 2.2.4
go 3.go 383ms 2.1ms 0.4MB 373ms 0ms tinygo 0.38.0
go 3.go 394ms 12ms 3.5MB 387ms 0ms go 1.24.4
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 0.0ms 1.8MB 40ms 0ms nim/clang 2.2.4
nim 2.nim 50ms 0.4ms 1.3MB 40ms 0ms nim 2.2.4
go 3.go 51ms 1.2ms 3.5MB 40ms 0ms go 1.24.4
go 3.go 67ms 2.9ms 0.3MB 60ms 0ms tinygo 0.38.0
nim 1.nim 478ms 6.6ms 1.5MB 470ms 0ms nim/clang 2.2.4
nim 1.nim 483ms 14ms 1.3MB 477ms 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 0.9ms 4.8MB 380ms 0ms nim/clang 2.2.4
nim 1.nim 577ms 4.1ms 4.5MB 563ms 0ms nim 2.2.4
go 1.go 3227ms 6.6ms 7.7MB 3220ms 0ms go 1.24.4
go 1.go 3605ms 41ms 3.3MB 3593ms 0ms tinygo 0.38.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 19ms 0.7ms 1.9MB 10ms 0ms nim/clang 2.2.4
nim 1.nim 26ms 0.4ms 1.6MB 20ms 0ms nim 2.2.4
go 1.go 137ms 3.0ms 3.6MB 130ms 0ms go 1.24.4
go 1.go 152ms 4.4ms 0.4MB 143ms 0ms tinygo 0.38.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 568ms 19ms 34.9MB 550ms 3ms nim 2.2.4
nim 1.nim 633ms 12ms 34.2MB 617ms 3ms nim/clang 2.2.4
go 1.go 1049ms 0.9ms 35.4MB 1030ms 0ms tinygo 0.38.0
go 2.go 1343ms 6.2ms 51.9MB 1317ms 10ms tinygo 0.38.0
go 1-m.go 1463ms 6.3ms 38.9MB 3117ms 33ms go 1.24.4
go 2-m.go 1677ms 22ms 40.9MB 3687ms 33ms go 1.24.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 119ms 2.4ms 9.6MB 107ms 0ms nim 2.2.4
nim 1.nim 138ms 2.2ms 9.9MB 127ms 0ms nim/clang 2.2.4
go 1.go 211ms 4.8ms 11.6MB 197ms 0ms tinygo 0.38.0
go 2.go 258ms 3.7ms 15.4MB 247ms 0ms tinygo 0.38.0
go 1-m.go 340ms 9.7ms 12.1MB 670ms 23ms go 1.24.4
go 2-m.go 372ms 0.6ms 14.0MB 787ms 20ms go 1.24.4

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 321ms 2.4ms 1.8MB 310ms 0ms nim 2.2.4
nim 2.nim 344ms 1.2ms 1.9MB 330ms 0ms nim/clang 2.2.4
go 1.go 346ms 1.4ms 0.3MB 337ms 0ms tinygo 0.38.0
go 1.go 349ms 1.6ms 3.5MB 340ms 0ms go 1.24.4

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
go 1.go 36ms 0.4ms 0.3MB 30ms 0ms tinygo 0.38.0
go 1.go 37ms 0.1ms 3.5MB 30ms 0ms go 1.24.4
nim 2.nim 38ms 1.4ms 2.0MB 30ms 0ms nim/clang 2.2.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 300ms 4.8ms 71.7MB 287ms 0ms go 1.24.4
nim 1.nim 306ms 36ms 41.5MB 297ms 0ms nim 2.2.4
nim 1.nim 334ms 13ms 41.8MB 323ms 0ms nim/clang 2.2.4
go 1.go 349ms 21ms 39.5MB 337ms 0ms tinygo 0.38.0
go 2.go 469ms 3.1ms 20.0MB 457ms 0ms tinygo 0.38.0
go 2.go 747ms 5.8ms 21.7MB 733ms 10ms go 1.24.4

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 1.1ms 11.5MB 40ms 0ms nim 2.2.4
go 1.go 57ms 3.3ms 21.5MB 50ms 0ms go 1.24.4
go 1.go 64ms 4.2ms 10.1MB 53ms 0ms tinygo 0.38.0
nim 1.nim 67ms 7.6ms 11.8MB 60ms 0ms nim/clang 2.2.4
go 2.go 117ms 4.5ms 4.1MB 110ms 0ms tinygo 0.38.0
go 2.go 187ms 2.3ms 6.3MB 177ms 0ms go 1.24.4

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 8.go 1174ms 6.0ms 10.6MB 1160ms 3ms go 1.24.4

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 8.go 278ms 2.4ms 8.6MB 267ms 0ms go 1.24.4

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1646ms 3.9ms 152.4MB 1610ms 23ms nim/clang 2.2.4
nim 1.nim 1674ms 7.4ms 151.5MB 1640ms 20ms nim 2.2.4
go 3.go timeout 0.0ms 122.3MB 4983ms 43ms go 1.24.4
go 3.go timeout 0.0ms 85.0MB 4973ms 10ms tinygo 0.38.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 3.1ms 17.6MB 160ms 0ms nim/clang 2.2.4
nim 1.nim 178ms 1.7ms 17.4MB 160ms 0ms nim 2.2.4
go 3.go 1798ms 95ms 20.2MB 1780ms 27ms go 1.24.4
go 3.go 2264ms 20ms 23.3MB 2247ms 0ms tinygo 0.38.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 0-ffi.go 92ms 1.0ms 5.2MB 90ms 0ms go 1.24.4

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 0-ffi.go 26ms 0.6ms 5.2MB 20ms 0ms go 1.24.4

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 1917ms 15ms 5.5MB 7387ms 13ms go 1.24.4
nim 1.nim 3589ms 1.4ms 2.0MB 3580ms 0ms nim/clang 2.2.4
nim 1.nim 3601ms 3.5ms 1.4MB 3593ms 0ms nim 2.2.4
go 1.go 3646ms 8.0ms 5.6MB 3637ms 0ms go 1.24.4
go 1.go timeout 0.0ms 0.5MB 4990ms 0ms tinygo 0.38.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 481ms 1.8ms 5.6MB 1843ms 0ms go 1.24.4
nim 1.nim 899ms 0.7ms 1.5MB 890ms 0ms nim/clang 2.2.4
nim 1.nim 903ms 1.2ms 1.3MB 893ms 0ms nim 2.2.4
go 1.go 915ms 1.3ms 3.5MB 907ms 0ms go 1.24.4
go 1.go 1397ms 1.7ms 0.4MB 1387ms 0ms tinygo 0.38.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 126ms 0.7ms 5.6MB 450ms 0ms go 1.24.4
nim 1.nim 227ms 0.4ms 1.5MB 220ms 0ms nim/clang 2.2.4
nim 1.nim 228ms 1.8ms 1.3MB 220ms 0ms nim 2.2.4
go 1.go 231ms 1.9ms 3.5MB 220ms 0ms go 1.24.4
go 1.go 351ms 0.1ms 0.4MB 340ms 0ms tinygo 0.38.0