Programming Language and compiler
Benchmarks

OCaml VS C benchmarks

Current benchmark data was generated on Sat Mar 29 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 3076ms 70ms 157.2MB 2993ms 73ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 223ms 5.5ms 19.1MB 203ms 3ms 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 2920ms 14ms 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 246ms 2.4ms 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 347ms 0.6ms 24.8MB 333ms 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 0.1ms 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 0.1ms 5.0MB 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 185ms 5.6ms 6.4MB 173ms 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 537ms 16ms 6.6MB 527ms 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 76ms 0.7ms 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
ocaml 1.ml 1097ms 8.4ms 70.3MB 1057ms 30ms ocaml 5.3.0
ocaml 2.ml 2087ms 30ms 91.7MB 2037ms 33ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 149ms 1.0ms 21.7MB 133ms 7ms ocaml 5.3.0
ocaml 2.ml 362ms 2.4ms 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
c 8-i.c 267ms 1.0ms 1.5MB 260ms 0ms zigcc 0.14.0
c 8-i.c 303ms 1.5ms 2.1MB 293ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 309ms 0.2ms 2.3MB 300ms 0ms gcc 14.2.0
c 5.c 313ms 0.9ms 2.3MB 303ms 0ms gcc 14.2.0
c 2.c 315ms 1.3ms 1.5MB 307ms 0ms zigcc 0.14.0
c 5.c 317ms 1.3ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 317ms 2.2ms 1.5MB 307ms 0ms zigcc 0.14.0
c 2.c 318ms 1.5ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 337ms 4.9ms 2.3MB 323ms 0ms gcc 14.2.0
ocaml 1.ml 377ms 1.5ms 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 29ms 0.4ms 1.5MB 20ms 0ms zigcc 0.14.0
c 8-i.c 32ms 0.4ms 2.1MB 23ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 34ms 0.5ms 2.3MB 27ms 0ms gcc 14.2.0
c 2.c 34ms 0.9ms 1.5MB 27ms 0ms zigcc 0.14.0
c 2.c 34ms 0.3ms 2.3MB 27ms 0ms gcc 14.2.0
c 5.c 34ms 0.8ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 35ms 0.6ms 1.5MB 30ms 0ms zigcc 0.14.0
c 8-i.c 36ms 0.1ms 2.3MB 30ms 0ms gcc 14.2.0
c 2.c 37ms 2.3ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
ocaml 1.ml 40ms 1.1ms 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 287ms 2.0ms 40.9MB 270ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 297ms 3.9ms 40.2MB 283ms 0ms zigcc 0.14.0
c 1.c 315ms 5.4ms 40.9MB 300ms 0ms gcc 14.2.0
ocaml 1.ml 961ms 7.1ms 552.4MB 900ms 47ms ocaml 5.3.0
ocaml 2.ml 1888ms 3.0ms 18.9MB 1877ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 54ms 0.7ms 11.0MB 40ms 0ms zigcc 0.14.0
c 1.c 56ms 4.6ms 11.6MB 47ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 58ms 7.5ms 11.6MB 47ms 0ms gcc 14.2.0
ocaml 1.ml 191ms 10ms 142.3MB 167ms 10ms ocaml 5.3.0
ocaml 2.ml 465ms 0.7ms 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 474.1MB 4813ms 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 3.3ms 57.1MB 517ms 20ms 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 967ms 9.4ms 2.0MB 3783ms 0ms gcc 14.2.0
c 4-m.c 982ms 12ms 2.0MB 3837ms 0ms gcc 14.2.0
c 6-im.c 1008ms 2.8ms 3.4MB 3950ms 3ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1095ms 0.3ms 2.0MB 4303ms 0ms gcc 14.2.0
c 4-m.c 1125ms 1.9ms 3.3MB 4407ms 7ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1351ms 16ms 3.4MB 5283ms 10ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1874ms 45ms 3.1MB 7307ms 17ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1977ms 3.1ms 2.0MB 7780ms 0ms gcc 14.2.0
ocaml 2.ml 4568ms 13ms 6.4MB 4557ms 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 249ms 3.6ms 2.0MB 950ms 0ms gcc 14.2.0
c 4-m.c 254ms 2.6ms 2.0MB 970ms 0ms gcc 14.2.0
c 6-im.c 263ms 2.7ms 3.3MB 1000ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 290ms 14ms 2.0MB 1100ms 0ms gcc 14.2.0
c 4-m.c 292ms 3.6ms 3.1MB 1110ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 343ms 4.7ms 3.3MB 1320ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 472ms 11ms 3.1MB 1810ms 3ms clang 14.0.0-1ubuntu1.1
c 3-m.c 499ms 3.0ms 2.0MB 1940ms 0ms gcc 14.2.0
ocaml 2.ml 1153ms 6.9ms 6.1MB 1143ms 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 0.2ms 2.0MB 253ms 0ms gcc 14.2.0
c 6-im.c 72ms 0.2ms 3.3MB 250ms 0ms clang 14.0.0-1ubuntu1.1
c 6-im.c 77ms 13ms 2.0MB 263ms 0ms gcc 14.2.0
c 4-m.c 80ms 1.2ms 3.3MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 81ms 2.6ms 2.0MB 290ms 0ms gcc 14.2.0
c 5-im.c 95ms 5.2ms 3.4MB 340ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 123ms 0.8ms 3.4MB 453ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 133ms 4.0ms 2.0MB 497ms 0ms gcc 14.2.0
ocaml 2.ml 290ms 2.8ms 5.2MB 280ms 0ms ocaml 5.3.0