Programming Language and compiler
Benchmarks

Results for 38 of 40 languages from this run on actest1.

Unavailable in this run: Hack, Lisp. Follow the run link for failure details.

Nim VS Go benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -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 1224ms 7.0ms 35.9MB 1200ms 7ms nim 2.2.4
nim 2.nim 1502ms 17ms 35.0MB 1483ms 3ms nim/clang 2.2.4
go 1-m.go 3946ms 44ms 39.9MB 8090ms 37ms go 1.26.8

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 117ms 20ms 7.3MB 95ms 0ms nim 2.2.4
nim 2.nim 124ms 5.3ms 5.9MB 110ms 0ms nim/clang 2.2.4
go 1.go 350ms 12ms 10.1MB 517ms 7ms go 1.26.8

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 6.nim 855ms 23ms 4.7MB 837ms 0ms nim 2.2.4
nim 6.nim 932ms 9.4ms 3.0MB 920ms 0ms nim/clang 2.2.4
go 1-m.go 1368ms 83ms 17.7MB 5267ms 7ms go 1.26.8
nim 5.nim 7274ms 50ms 8.1MB 7223ms 30ms nim 2.2.4
nim 5.nim 8047ms 172ms 6.4MB 7997ms 33ms nim/clang 2.2.4
nim 3.nim 26905ms 184ms 11.5MB 26857ms 27ms nim/clang 2.2.4
nim 3.nim 27665ms 109ms 14.5MB 27613ms 30ms nim 2.2.4
nim 1.nim 107046ms 771ms 2036.8MB 71373ms 33600ms nim/clang 2.2.4
nim 1.nim 108677ms 212ms 2036.9MB 72837ms 33773ms nim 2.2.4

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 6.nim 57ms 2.7ms 3.6MB 47ms 0ms nim 2.2.4
nim 6.nim 65ms 0.3ms 1.9MB 53ms 0ms nim/clang 2.2.4
go 1-m.go 84ms 17ms 7.7MB 283ms 0ms go 1.26.8
nim 5.nim 417ms 4.9ms 4.6MB 403ms 0ms nim 2.2.4
nim 5.nim 474ms 9.7ms 2.9MB 460ms 0ms nim/clang 2.2.4
nim 3.nim 1171ms 6.6ms 6.0MB 1163ms 0ms nim 2.2.4
nim 3.nim 1197ms 26ms 3.8MB 1187ms 0ms nim/clang 2.2.4
nim 1.nim 5324ms 41ms 522.5MB 3093ms 1793ms nim 2.2.4
nim 1.nim 5430ms 115ms 518.9MB 3183ms 1807ms nim/clang 2.2.4

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 159ms 1.5ms 7.8MB 410ms 3ms go 1.26.8
nim 2.nim 252ms 0.3ms 1.4MB 240ms 0ms nim/clang 2.2.4
nim 2.nim 252ms 8.0ms 2.0MB 233ms 0ms nim 2.2.4
nim 1.nim 606ms 6.1ms 1.3MB 500ms 90ms nim/clang 2.2.4
nim 1.nim 644ms 18ms 2.1MB 523ms 107ms nim 2.2.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 20ms 0.2ms 7.8MB 37ms 0ms go 1.26.8
nim 2.nim 29ms 2.1ms 1.4MB 20ms 0ms nim/clang 2.2.4
nim 2.nim 31ms 3.8ms 2.1MB 23ms 0ms nim 2.2.4
nim 1.nim 66ms 1.5ms 2.1MB 50ms 0ms nim 2.2.4
nim 1.nim 76ms 15ms 1.3MB 57ms 7ms nim/clang 2.2.4

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.5ms 0.1ms 1.3MB 0ms 0ms nim/clang 2.2.4
nim 1.nim 2.5ms 0.5ms 2.1MB 0ms 0ms nim 2.2.4
go 1.go 3.0ms 0.7ms 5.0MB 0ms 0ms go 1.26.8

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 152ms 2.4ms 1.4MB 143ms 0ms nim/clang 2.2.4
nim 2.nim 154ms 7.7ms 3.5MB 143ms 0ms nim 2.2.4
go 3.go 167ms 1.9ms 5.8MB 153ms 0ms go 1.26.8
nim 1.nim 10570ms 78ms 2.1MB 10560ms 0ms nim 2.2.4
nim 1.nim 14012ms 275ms 1.4MB 13997ms 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 446ms 5.0ms 3.5MB 437ms 0ms nim 2.2.4
nim 2.nim 449ms 4.0ms 1.3MB 437ms 0ms nim/clang 2.2.4
go 3.go 482ms 4.0ms 4.9MB 473ms 0ms go 1.26.8
nim 1.nim 31568ms 105ms 2.1MB 31553ms 0ms nim 2.2.4
nim 1.nim 42854ms 1115ms 1.4MB 42840ms 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 67ms 0.6ms 1.4MB 60ms 0ms nim/clang 2.2.4
nim 2.nim 68ms 2.3ms 2.1MB 60ms 0ms nim 2.2.4
go 3.go 75ms 2.1ms 2.9MB 67ms 0ms go 1.26.8
nim 1.nim 535ms 9.4ms 2.1MB 523ms 0ms nim 2.2.4
nim 1.nim 689ms 8.3ms 1.3MB 677ms 0ms nim/clang 2.2.4

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 557ms 8.5ms 4.5MB 543ms 0ms nim/clang 2.2.4
nim 1.nim 1366ms 3.0ms 6.4MB 1350ms 0ms nim 2.2.4
go 1.go 5080ms 21ms 7.8MB 5073ms 3ms go 1.26.8

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 26ms 0.4ms 1.4MB 20ms 0ms nim/clang 2.2.4
nim 1.nim 62ms 2.4ms 3.7MB 50ms 0ms nim 2.2.4
go 1.go 212ms 1.8ms 5.8MB 200ms 0ms go 1.26.8

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 790ms 8.4ms 36.7MB 777ms 3ms nim 2.2.4
nim 1.nim 970ms 6.2ms 35.1MB 950ms 7ms nim/clang 2.2.4
go 2-m.go 2861ms 32ms 35.4MB 5927ms 33ms go 1.26.8
go 1-m.go 3072ms 206ms 36.8MB 5667ms 47ms go 1.26.8

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 143ms 4.6ms 11.5MB 123ms 0ms nim 2.2.4
nim 1.nim 183ms 6.8ms 9.5MB 170ms 0ms nim/clang 2.2.4
go 1-m.go 617ms 73ms 14.2MB 1040ms 43ms go 1.26.8
go 2-m.go 642ms 38ms 14.3MB 1227ms 20ms go 1.26.8

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 494ms 1.4ms 2.1MB 480ms 0ms nim 2.2.4
nim 2.nim 542ms 9.6ms 1.4MB 530ms 0ms nim/clang 2.2.4
go 1.go 668ms 14ms 5.0MB 657ms 0ms go 1.26.8

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 55ms 2.9ms 2.1MB 47ms 0ms nim 2.2.4
nim 2.nim 58ms 1.0ms 1.3MB 50ms 0ms nim/clang 2.2.4
go 1.go 74ms 3.6ms 5.6MB 63ms 0ms go 1.26.8

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 954ms 6.1ms 42.7MB 937ms 0ms nim 2.2.4
nim 1.nim 965ms 5.0ms 40.8MB 943ms 0ms nim/clang 2.2.4
go 1.go 984ms 2.2ms 73.9MB 970ms 3ms go 1.26.8
go 2.go 1267ms 63ms 20.8MB 1250ms 10ms go 1.26.8

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 168ms 0.9ms 12.9MB 160ms 0ms nim 2.2.4
nim 1.nim 175ms 5.7ms 11.8MB 163ms 0ms nim/clang 2.2.4
go 1.go 177ms 2.2ms 21.8MB 170ms 0ms go 1.26.8
go 2.go 285ms 10.0ms 9.4MB 273ms 0ms go 1.26.8

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 2134ms 7.6ms 151.9MB 2093ms 20ms nim/clang 2.2.4
nim 1.nim 2191ms 42ms 153.8MB 2157ms 13ms nim 2.2.4
go 3.go 27882ms 432ms 149.1MB 27900ms 67ms go 1.26.8

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 222ms 3.8ms 16.8MB 203ms 0ms nim/clang 2.2.4
nim 1.nim 224ms 0.6ms 18.4MB 203ms 7ms nim 2.2.4
go 3.go 2893ms 31ms 22.2MB 2887ms 10ms go 1.26.8

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 5816ms 1.9ms 7.8MB 22930ms 10ms go 1.26.8
nim 1.nim 11029ms 35ms 1.3MB 11017ms 0ms nim/clang 2.2.4
nim 1.nim 11039ms 7.6ms 3.4MB 11027ms 0ms nim 2.2.4
go 1.go 11055ms 15ms 5.8MB 11050ms 7ms go 1.26.8

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 1460ms 2.3ms 5.8MB 5700ms 3ms go 1.26.8
nim 1.nim 2764ms 2.5ms 1.4MB 2753ms 0ms nim/clang 2.2.4
nim 1.nim 2767ms 4.2ms 2.1MB 2753ms 0ms nim 2.2.4
go 1.go 2775ms 4.4ms 5.8MB 2763ms 0ms go 1.26.8

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 369ms 0.7ms 5.8MB 1390ms 0ms go 1.26.8
nim 1.nim 695ms 0.3ms 1.3MB 683ms 0ms nim/clang 2.2.4
nim 1.nim 696ms 2.1ms 2.1MB 687ms 0ms nim 2.2.4
go 1.go 698ms 5.8ms 5.8MB 687ms 3ms go 1.26.8