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.

Racket VS Nim 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.)

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
racket 3.rkt 927ms 12ms 70.4MB 873ms 37ms racket 8.10.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
racket 3.rkt 240ms 10ms 65.0MB 200ms 27ms racket 8.10.0

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
racket 1.rkt 140ms 4.8ms 65.2MB 98ms 26ms racket 8.10.0

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
racket 2.rkt 1577ms 23ms 70.6MB 1533ms 30ms racket 8.10.0

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
racket 2.rkt 315ms 11ms 70.3MB 267ms 33ms racket 8.10.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
racket 1.rkt 5907ms 26ms 71.7MB 5850ms 43ms racket 8.10.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
racket 1.rkt 1499ms 12ms 72.1MB 1453ms 30ms racket 8.10.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
racket 3-m.rkt 8215ms 100ms 67.8MB 31520ms 47ms racket 8.10.0
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

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
racket 3-m.rkt 2097ms 14ms 67.5MB 7660ms 37ms racket 8.10.0
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

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
racket 3-m.rkt 640ms 14ms 67.1MB 1983ms 33ms racket 8.10.0
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