Programming Language and compiler
Benchmarks

OCaml VS C benchmarks

Current benchmark data was generated on Tue Mar 25 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
ocaml 1.ml 3139ms 30ms 157.2MB 3050ms 73ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 228ms 11ms 19.2MB 213ms 0ms ocaml 5.3.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 2918ms 4.8ms 4.9MB 2910ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 245ms 1.4ms 4.9MB 237ms 0ms ocaml 5.3.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 6.ml 345ms 0.3ms 24.8MB 330ms 0ms ocaml 5.3.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 6.ml 39ms 0.3ms 7.3MB 30ms 0ms ocaml 5.3.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 1.0ms 0.0ms 1.4MB 0ms 0ms zigcc 0.14.0
c 1.c 1.2ms 0.1ms 2.1MB 0ms 0ms gcc 14.2.0
c 1.c 1.3ms 0.1ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1
ocaml 1.ml 1.9ms 0.2ms 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
ocaml 1.ml 178ms 2.2ms 6.4MB 170ms 0ms ocaml 5.3.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 535ms 18ms 6.6MB 523ms 0ms ocaml 5.3.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 77ms 0.5ms 6.1MB 70ms 0ms ocaml 5.3.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 1104ms 1.1ms 70.3MB 1060ms 30ms ocaml 5.3.0
ocaml 2.ml 2279ms 5.8ms 91.8MB 2220ms 43ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 149ms 3.1ms 21.6MB 130ms 7ms ocaml 5.3.0
ocaml 2.ml 396ms 3.4ms 27.7MB 377ms 7ms ocaml 5.3.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 270ms 3.5ms 1.5MB 263ms 0ms zigcc 0.14.0
c 8-i.c 303ms 0.8ms 2.1MB 290ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 310ms 0.8ms 2.3MB 300ms 0ms gcc 14.2.0
c 5.c 313ms 0.8ms 2.3MB 307ms 0ms gcc 14.2.0
c 5.c 317ms 0.3ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 317ms 5.6ms 1.5MB 303ms 0ms zigcc 0.14.0
c 5.c 318ms 3.5ms 1.5MB 310ms 0ms zigcc 0.14.0
c 2.c 318ms 2.2ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 333ms 0.4ms 2.3MB 320ms 0ms gcc 14.2.0
ocaml 1.ml 374ms 0.4ms 5.3MB 367ms 0ms ocaml 5.3.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 31ms 4.1ms 1.5MB 23ms 0ms zigcc 0.14.0
c 8-i.c 34ms 0.5ms 2.3MB 27ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 34ms 0.5ms 2.3MB 30ms 0ms gcc 14.2.0
c 2.c 34ms 0.3ms 1.5MB 30ms 0ms zigcc 0.14.0
c 5.c 34ms 0.1ms 2.3MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 34ms 0.3ms 2.3MB 30ms 0ms gcc 14.2.0
c 5.c 35ms 0.6ms 1.5MB 30ms 0ms zigcc 0.14.0
c 8-i.c 36ms 0.2ms 2.3MB 30ms 0ms gcc 14.2.0
c 2.c 40ms 2.3ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
ocaml 1.ml 41ms 0.7ms 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
c 1.c 292ms 7.4ms 41.0MB 277ms 0ms gcc 14.2.0
c 1.c 327ms 8.1ms 40.2MB 310ms 0ms zigcc 0.14.0
c 1.c 337ms 20ms 40.8MB 317ms 0ms clang 14.0.0-1ubuntu1.1
ocaml 1.ml 1019ms 4.4ms 544.4MB 960ms 43ms ocaml 5.3.0
ocaml 2.ml 1896ms 11ms 17.2MB 1883ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 53ms 4.6ms 11.8MB 43ms 0ms gcc 14.2.0
c 1.c 55ms 2.0ms 11.6MB 43ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 60ms 1.3ms 11.0MB 50ms 0ms zigcc 0.14.0
ocaml 1.ml 197ms 0.6ms 128.8MB 173ms 10ms ocaml 5.3.0
ocaml 2.ml 469ms 5.3ms 9.1MB 457ms 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 462.7MB 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 550ms 6.1ms 57.1MB 507ms 27ms ocaml 5.3.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 6-im.c 958ms 2.2ms 2.0MB 3770ms 0ms gcc 14.2.0
c 4-m.c 968ms 2.7ms 2.0MB 3810ms 0ms gcc 14.2.0
c 6-im.c 1011ms 12ms 3.3MB 3953ms 7ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1099ms 17ms 2.0MB 4293ms 3ms gcc 14.2.0
c 4-m.c 1132ms 16ms 3.1MB 4430ms 7ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1333ms 5.5ms 3.3MB 5243ms 3ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1845ms 24ms 3.3MB 7243ms 10ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1975ms 10ms 2.3MB 7780ms 7ms gcc 14.2.0
ocaml 2.ml 4585ms 15ms 6.4MB 4573ms 0ms ocaml 5.3.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 6-im.c 247ms 0.9ms 2.0MB 943ms 0ms gcc 14.2.0
c 4-m.c 252ms 1.3ms 2.1MB 967ms 0ms gcc 14.2.0
c 6-im.c 263ms 2.8ms 3.3MB 993ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 287ms 8.2ms 2.0MB 1100ms 0ms gcc 14.2.0
c 4-m.c 289ms 1.7ms 3.3MB 1110ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 342ms 1.1ms 3.3MB 1313ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 496ms 43ms 3.3MB 1873ms 7ms clang 14.0.0-1ubuntu1.1
c 3-m.c 497ms 0.9ms 2.0MB 1940ms 0ms gcc 14.2.0
ocaml 2.ml 1148ms 6.8ms 6.1MB 1140ms 0ms ocaml 5.3.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 4-m.c 71ms 0.4ms 2.0MB 257ms 0ms gcc 14.2.0
c 6-im.c 73ms 4.0ms 3.3MB 253ms 0ms clang 14.0.0-1ubuntu1.1
c 6-im.c 75ms 7.5ms 2.0MB 263ms 0ms gcc 14.2.0
c 5-im.c 79ms 1.5ms 2.0MB 280ms 0ms gcc 14.2.0
c 4-m.c 79ms 0.8ms 3.1MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 92ms 1.5ms 3.1MB 327ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 126ms 3.1ms 3.1MB 453ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 131ms 1.1ms 2.0MB 493ms 0ms gcc 14.2.0
ocaml 2.ml 296ms 5.1ms 5.2MB 287ms 0ms ocaml 5.3.0