Programming Language and compiler
Benchmarks

OCaml VS Zig benchmarks

Current benchmark data was generated on Mon Apr 14 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
zig 1.zig 1894ms 41ms 49.0MB 1867ms 17ms zig 0.14.0
ocaml 1.ml 3140ms 30ms 157.0MB 3057ms 70ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 152ms 2.5ms 7.0MB 140ms 0ms zig 0.14.0
ocaml 1.ml 226ms 2.6ms 19.2MB 210ms 0ms ocaml 5.3.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2-m.zig 631ms 8.0ms 1.4MB 2400ms 0ms zig 0.14.0
zig 3-i.zig 1768ms 2.0ms 1.0MB 1760ms 0ms zig 0.14.0
zig 1.zig 2714ms 7.8ms 1.1MB 2707ms 0ms zig 0.14.0
ocaml 2.ml 2917ms 2.7ms 4.9MB 2907ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2-m.zig 60ms 1.2ms 1.4MB 200ms 0ms zig 0.14.0
zig 3-i.zig 148ms 1.0ms 1.0MB 140ms 0ms zig 0.14.0
zig 1.zig 229ms 0.7ms 1.0MB 220ms 0ms zig 0.14.0
ocaml 2.ml 249ms 3.0ms 4.9MB 240ms 0ms ocaml 5.3.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 87ms 0.7ms 1.0MB 80ms 0ms zig 0.14.0
ocaml 6.ml 345ms 0.4ms 24.9MB 333ms 0ms ocaml 5.3.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 11ms 0.8ms 1.0MB 0ms 0ms zig 0.14.0
ocaml 6.ml 39ms 0.6ms 7.5MB 30ms 0ms ocaml 5.3.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 1.0ms 0.0ms 1.0MB 0ms 0ms zig 0.14.0
ocaml 1.ml 1.9ms 0.0ms 5.1MB 0ms 0ms ocaml 5.3.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 34ms 1.8ms 2.8MB 23ms 0ms zig 0.14.0
ocaml 1.ml 188ms 1.5ms 6.4MB 180ms 0ms ocaml 5.3.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 93ms 2.6ms 2.8MB 87ms 0ms zig 0.14.0
ocaml 1.ml 542ms 24ms 6.6MB 530ms 0ms ocaml 5.3.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 15ms 0.2ms 1.3MB 10ms 0ms zig 0.14.0
ocaml 1.ml 78ms 1.1ms 5.9MB 70ms 0ms ocaml 5.3.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 905ms 67ms 41.0MB 880ms 10ms zig 0.14.0
ocaml 1.ml 1141ms 35ms 70.2MB 1100ms 30ms ocaml 5.3.0
ocaml 2.ml 2156ms 13ms 91.8MB 2103ms 37ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 161ms 4.4ms 21.6MB 143ms 7ms ocaml 5.3.0
zig 1.zig 178ms 2.5ms 11.0MB 170ms 0ms zig 0.14.0
ocaml 2.ml 362ms 1.5ms 27.7MB 343ms 3ms ocaml 5.3.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 198ms 0.4ms 1.0MB 190ms 0ms zig 0.14.0
zig 2.zig 280ms 0.3ms 1.0MB 270ms 0ms zig 0.14.0
zig 1.zig 315ms 0.5ms 1.1MB 307ms 0ms zig 0.14.0
ocaml 1.ml 374ms 1.4ms 5.3MB 363ms 0ms ocaml 5.3.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 22ms 0.2ms 1.0MB 10ms 0ms zig 0.14.0
zig 2.zig 30ms 0.1ms 1.0MB 20ms 0ms zig 0.14.0
zig 1.zig 34ms 0.4ms 1.1MB 30ms 0ms zig 0.14.0
ocaml 1.ml 41ms 1.6ms 5.2MB 30ms 0ms ocaml 5.3.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 263ms 1.3ms 40.1MB 250ms 0ms zig 0.14.0
zig 2.zig 328ms 2.0ms 6.0MB 320ms 0ms zig 0.14.0
ocaml 1.ml 1018ms 5.8ms 550.4MB 963ms 40ms ocaml 5.3.0
ocaml 2.ml 1884ms 9.4ms 17.2MB 1867ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 50ms 1.1ms 10.8MB 40ms 0ms zig 0.14.0
zig 2.zig 80ms 0.0ms 2.3MB 70ms 0ms zig 0.14.0
ocaml 1.ml 203ms 4.9ms 140.7MB 183ms 10ms ocaml 5.3.0
ocaml 2.ml 463ms 1.3ms 9.1MB 450ms 0ms ocaml 5.3.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml timeout 0.0ms 462.9MB 4810ms 173ms ocaml 5.3.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 551ms 8.1ms 57.1MB 517ms 23ms ocaml 5.3.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 3690ms 5.3ms 1.4MB 3680ms 0ms zig 0.14.0
ocaml 2.ml 4555ms 3.1ms 6.3MB 4543ms 0ms ocaml 5.3.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 923ms 2.2ms 1.3MB 913ms 0ms zig 0.14.0
ocaml 2.ml 1144ms 2.0ms 6.1MB 1137ms 0ms ocaml 5.3.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 234ms 1.1ms 1.3MB 230ms 0ms zig 0.14.0
ocaml 2.ml 294ms 3.8ms 5.2MB 287ms 0ms ocaml 5.3.0