Programming Language and compiler
Benchmarks

OCaml VS V benchmarks

Current benchmark data was generated on Sun Jul 13 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
v 1.v 825ms 11ms 28.8MB 810ms 3ms v/clang+gc 0.4.11
v 1.v 2174ms 25ms 2086.6MB 1273ms 890ms v/clang 0.4.11
ocaml 1.ml 3087ms 52ms 157.2MB 3003ms 70ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 72ms 2.2ms 4.6MB 60ms 0ms v/clang+gc 0.4.11
v 1.v 206ms 2.7ms 197.9MB 117ms 73ms v/clang 0.4.11
ocaml 1.ml 221ms 1.6ms 19.1MB 207ms 0ms ocaml 5.3.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 2199ms 24ms 1.9MB 2190ms 0ms v/clang+gc 0.4.11
v 1.v 2258ms 6.9ms 1.1MB 2250ms 0ms v/clang 0.4.11
ocaml 2.ml 2909ms 4.1ms 4.9MB 2903ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 186ms 0.8ms 1.9MB 180ms 0ms v/clang+gc 0.4.11
v 1.v 192ms 0.9ms 1.1MB 183ms 0ms v/clang 0.4.11
ocaml 2.ml 245ms 0.8ms 5.2MB 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 346ms 1.9ms 24.8MB 330ms 0ms ocaml 5.3.0
v 1.v 503ms 5.1ms 1.3MB 497ms 0ms v/clang 0.4.11
v 1.v 522ms 1.0ms 2.1MB 510ms 0ms v/clang+gc 0.4.11

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 6.ml 39ms 0.7ms 7.4MB 30ms 0ms ocaml 5.3.0
v 1.v 54ms 1.8ms 1.3MB 47ms 0ms v/clang 0.4.11
v 1.v 56ms 2.5ms 2.1MB 50ms 0ms v/clang+gc 0.4.11

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 1.0ms 0.0ms 1.4MB 0ms 0ms v/clang 0.4.11
v 1.v 1.3ms 0.0ms 1.9MB 0ms 0ms v/clang+gc 0.4.11
ocaml 1.ml 1.8ms 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 173ms 2.7ms 6.4MB 163ms 0ms ocaml 5.3.0
v 1.v 259ms 3.4ms 2.1MB 250ms 0ms v/clang+gc 0.4.11
v 1.v 267ms 5.4ms 1.3MB 257ms 0ms v/clang 0.4.11

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 532ms 18ms 6.6MB 520ms 0ms ocaml 5.3.0
v 1.v 770ms 4.1ms 2.1MB 760ms 0ms v/clang+gc 0.4.11
v 1.v 792ms 5.6ms 1.3MB 787ms 0ms v/clang 0.4.11

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 78ms 0.4ms 6.2MB 70ms 0ms ocaml 5.3.0
v 1.v 91ms 2.0ms 1.3MB 83ms 0ms v/clang 0.4.11
v 1.v 100ms 1.6ms 2.1MB 93ms 0ms v/clang+gc 0.4.11

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 1077ms 22ms 70.2MB 1037ms 27ms ocaml 5.3.0
ocaml 2.ml 2068ms 35ms 91.8MB 2017ms 37ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 144ms 1.4ms 21.7MB 127ms 3ms ocaml 5.3.0
ocaml 2.ml 359ms 6.4ms 27.7MB 340ms 7ms ocaml 5.3.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 312ms 1.5ms 1.6MB 300ms 0ms v/clang 0.4.11
v 1.v 312ms 1.3ms 2.3MB 300ms 0ms v/clang+gc 0.4.11
ocaml 1.ml 374ms 2.6ms 5.2MB 367ms 0ms ocaml 5.3.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 33ms 0.0ms 1.6MB 30ms 0ms v/clang 0.4.11
v 1.v 34ms 0.2ms 2.3MB 27ms 0ms v/clang+gc 0.4.11
ocaml 1.ml 40ms 0.1ms 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
v 1.v 321ms 15ms 40.3MB 307ms 0ms v/clang 0.4.11
v 1.v 323ms 7.3ms 41.2MB 310ms 0ms v/clang+gc 0.4.11
v 2.v 329ms 1.3ms 6.1MB 320ms 0ms v/clang 0.4.11
v 2.v 331ms 4.8ms 6.9MB 323ms 0ms v/clang+gc 0.4.11
ocaml 1.ml 945ms 11ms 547.9MB 883ms 47ms ocaml 5.3.0
ocaml 2.ml 1884ms 7.1ms 17.2MB 1870ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 61ms 2.9ms 11.9MB 50ms 0ms v/clang+gc 0.4.11
v 1.v 65ms 0.6ms 11.0MB 57ms 0ms v/clang 0.4.11
v 2.v 82ms 1.5ms 3.1MB 73ms 0ms v/clang+gc 0.4.11
v 2.v 83ms 2.1ms 2.4MB 73ms 0ms v/clang 0.4.11
ocaml 1.ml 178ms 0.8ms 142.3MB 153ms 10ms ocaml 5.3.0
ocaml 2.ml 464ms 1.5ms 9.3MB 453ms 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 4830ms 157ms ocaml 5.3.0
v 1.v timeout 0.0ms 83.0MB 4980ms 10ms v/clang+gc 0.4.11

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 542ms 2.0ms 57.1MB 510ms 17ms ocaml 5.3.0
v 1.v 3628ms 16ms 26.0MB 3613ms 0ms v/clang+gc 0.4.11

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 4558ms 6.5ms 6.3MB 4543ms 0ms ocaml 5.3.0
v 1.v timeout 0.0ms 1.6MB 4990ms 0ms v/clang 0.4.11
v 1.v timeout 0.0ms 2.8MB 4990ms 0ms v/clang+gc 0.4.11

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 1146ms 5.3ms 6.1MB 1137ms 0ms ocaml 5.3.0
v 1.v 1289ms 3.0ms 1.5MB 1280ms 0ms v/clang 0.4.11
v 1.v 1327ms 5.5ms 2.5MB 1317ms 0ms v/clang+gc 0.4.11

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 296ms 9.1ms 5.2MB 287ms 0ms ocaml 5.3.0
v 1.v 325ms 1.8ms 1.5MB 317ms 0ms v/clang 0.4.11
v 1.v 335ms 1.1ms 2.4MB 327ms 0ms v/clang+gc 0.4.11