Programming Language and compiler
Benchmarks

OCaml VS Rust benchmarks

Current benchmark data was generated on Wed Jan 22 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
rust 4.rs 1246ms 3.8ms 33.8MB 1220ms 13ms rustc 1.84.0
rust 5.rs 1349ms 11ms 33.8MB 1327ms 7ms rustc 1.84.0
rust 3.rs 1475ms 58ms 49.8MB 1443ms 17ms rustc 1.84.0
ocaml 1.ml 2977ms 13ms 132.6MB 2900ms 60ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 122ms 1.4ms 5.8MB 110ms 0ms rustc 1.84.0
rust 5.rs 124ms 0.7ms 5.8MB 110ms 0ms rustc 1.84.0
rust 3.rs 139ms 4.3ms 7.8MB 123ms 3ms rustc 1.84.0
ocaml 1.ml 214ms 3.1ms 19.2MB 197ms 3ms ocaml 5.3.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 411ms 1.6ms 4.0MB 1577ms 0ms rustc 1.84.0
rust 5-m.rs 566ms 8.3ms 4.0MB 2153ms 0ms rustc 1.84.0
rust 2-im.rs 629ms 8.2ms 4.0MB 2403ms 3ms rustc 1.84.0
rust 1-m.rs 967ms 7.9ms 4.0MB 3727ms 0ms rustc 1.84.0
rust 3-i.rs 1495ms 5.0ms 1.9MB 1483ms 0ms rustc 1.84.0
rust 2-i.rs 1759ms 3.0ms 1.8MB 1750ms 0ms rustc 1.84.0
rust 1.rs 2665ms 2.5ms 1.8MB 2657ms 0ms rustc 1.84.0
ocaml 2.ml 2911ms 3.1ms 4.9MB 2900ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 0.2ms 6.0MB 120ms 0ms rustc 1.84.0
rust 5-m.rs 56ms 3.5ms 4.0MB 170ms 0ms rustc 1.84.0
rust 2-im.rs 62ms 0.9ms 6.0MB 200ms 0ms rustc 1.84.0
rust 1-m.rs 86ms 1.8ms 6.0MB 300ms 0ms rustc 1.84.0
rust 3-i.rs 126ms 1.4ms 1.9MB 120ms 0ms rustc 1.84.0
rust 2-i.rs 149ms 0.9ms 1.8MB 140ms 0ms rustc 1.84.0
rust 1.rs 224ms 1.9ms 1.8MB 210ms 0ms rustc 1.84.0
ocaml 2.ml 245ms 4.0ms 4.9MB 233ms 0ms ocaml 5.3.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 88ms 0.2ms 6.5MB 233ms 3ms rustc 1.84.0
rust 5-m.rs 98ms 2.1ms 4.8MB 310ms 3ms rustc 1.84.0
rust 1c.rs 163ms 1.0ms 1.9MB 153ms 0ms rustc 1.84.0
rust 1.rs 204ms 1.5ms 1.9MB 190ms 0ms rustc 1.84.0
ocaml 6.ml 345ms 2.4ms 24.9MB 333ms 0ms ocaml 5.3.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 16ms 0.2ms 4.8MB 23ms 0ms rustc 1.84.0
rust 5-m.rs 17ms 0.4ms 6.5MB 20ms 7ms rustc 1.84.0
rust 1c.rs 19ms 0.5ms 1.9MB 10ms 0ms rustc 1.84.0
rust 1.rs 23ms 0.1ms 1.9MB 10ms 0ms rustc 1.84.0
ocaml 6.ml 38ms 0.2ms 7.5MB 23ms 0ms ocaml 5.3.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1.2ms 0.0ms 1.9MB 0ms 0ms rustc 1.84.0
rust 1.rs 1.3ms 0.1ms 1.8MB 0ms 0ms rustc 1.86.0-nightly
ocaml 1.ml 1.9ms 0.2ms 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
rust 0-unsafe.rs 35ms 3.7ms 1.9MB 23ms 0ms rustc 1.84.0
rust 1.rs 53ms 2.6ms 2.0MB 40ms 0ms rustc 1.84.0
ocaml 1.ml 181ms 7.0ms 6.5MB 167ms 0ms ocaml 5.3.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 134ms 22ms 1.9MB 123ms 0ms rustc 1.84.0
rust 1.rs 178ms 9.4ms 2.0MB 167ms 0ms rustc 1.84.0
ocaml 1.ml 540ms 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
rust 0-unsafe.rs 24ms 0.4ms 1.9MB 13ms 0ms rustc 1.84.0
rust 1.rs 30ms 1.8ms 1.9MB 20ms 0ms rustc 1.84.0
ocaml 1.ml 77ms 0.8ms 6.0MB 63ms 0ms ocaml 5.3.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 694ms 5.4ms 33.8MB 673ms 7ms rustc 1.84.0
ocaml 1.ml 1060ms 22ms 71.2MB 1023ms 27ms ocaml 5.3.0
ocaml 2.ml 2025ms 10ms 91.8MB 1973ms 37ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 148ms 2.0ms 21.6MB 133ms 0ms ocaml 5.3.0
rust 1.rs 151ms 3.7ms 9.8MB 137ms 0ms rustc 1.84.0
ocaml 2.ml 352ms 1.6ms 27.7MB 327ms 7ms ocaml 5.3.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 167ms 7.9ms 1.9MB 153ms 0ms rustc 1.84.0
rust 7-i.rs 236ms 0.8ms 1.9MB 227ms 0ms rustc 1.84.0
rust 1.rs 239ms 0.8ms 1.8MB 230ms 0ms rustc 1.84.0
rust 2.rs 279ms 1.1ms 1.8MB 267ms 0ms rustc 1.84.0
rust 3.rs 280ms 0.3ms 1.9MB 267ms 0ms rustc 1.86.0-nightly
ocaml 1.ml 373ms 4.8ms 5.3MB 363ms 0ms ocaml 5.3.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 21ms 3.7ms 1.8MB 10ms 0ms rustc 1.84.0
rust 7-i.rs 26ms 0.4ms 1.8MB 20ms 0ms rustc 1.84.0
rust 1.rs 26ms 0.5ms 1.9MB 17ms 0ms rustc 1.84.0
rust 2.rs 30ms 0.2ms 1.8MB 20ms 0ms rustc 1.84.0
rust 3.rs 30ms 0.2ms 1.8MB 20ms 0ms rustc 1.86.0-nightly
ocaml 1.ml 40ms 0.1ms 5.3MB 30ms 0ms ocaml 5.3.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 313ms 4.9ms 40.9MB 293ms 7ms rustc 1.84.0
rust 2.rs 319ms 1.7ms 6.6MB 307ms 0ms rustc 1.84.0
ocaml 1.ml 914ms 6.3ms 552.5MB 853ms 43ms ocaml 5.3.0
ocaml 2.ml 1875ms 8.7ms 18.6MB 1857ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 59ms 1.3ms 11.6MB 50ms 0ms rustc 1.84.0
rust 2.rs 80ms 0.7ms 2.9MB 70ms 0ms rustc 1.84.0
ocaml 1.ml 176ms 3.5ms 142.3MB 153ms 7ms ocaml 5.3.0
ocaml 2.ml 466ms 4.9ms 9.1MB 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
rust 7.rs 445ms 5.0ms 80.4MB 477ms 10ms rustc 1.84.0
ocaml 2.ml timeout 0.0ms 484.8MB 4803ms 180ms ocaml 5.3.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 51ms 0.5ms 11.4MB 40ms 0ms rustc 1.84.0
ocaml 2.ml 545ms 6.3ms 57.2MB 507ms 27ms ocaml 5.3.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 498ms 0.6ms 4.6MB 1907ms 0ms rustc 1.86.0-nightly
rust 7-m.rs 499ms 0.2ms 4.2MB 1927ms 0ms rustc 1.84.0
rust 8.rs 1010ms 1.5ms 2.4MB 1000ms 0ms rustc 1.86.0-nightly
rust 2-m.rs 1942ms 1.3ms 6.2MB 7613ms 3ms rustc 1.84.0
rust 7.rs 2082ms 9.0ms 2.0MB 2070ms 0ms rustc 1.84.0
rust 2.rs 4212ms 29ms 2.0MB 4203ms 0ms rustc 1.84.0
ocaml 2.ml 4564ms 17ms 6.3MB 4553ms 0ms ocaml 5.3.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 128ms 0.3ms 4.2MB 463ms 0ms rustc 1.86.0-nightly
rust 7-m.rs 128ms 0.3ms 6.1MB 470ms 0ms rustc 1.84.0
rust 8.rs 255ms 0.7ms 2.3MB 250ms 0ms rustc 1.86.0-nightly
rust 2-m.rs 491ms 0.2ms 4.1MB 1880ms 7ms rustc 1.84.0
rust 7.rs 525ms 4.8ms 1.9MB 517ms 0ms rustc 1.84.0
rust 2.rs 1050ms 2.4ms 2.0MB 1037ms 0ms rustc 1.84.0
ocaml 2.ml 1141ms 5.8ms 6.1MB 1130ms 0ms ocaml 5.3.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 36ms 0.4ms 4.1MB 107ms 0ms rustc 1.86.0-nightly
rust 7-m.rs 36ms 0.4ms 4.1MB 103ms 7ms rustc 1.84.0
rust 8.rs 66ms 0.8ms 2.0MB 57ms 0ms rustc 1.86.0-nightly
rust 2-m.rs 127ms 0.2ms 4.1MB 460ms 3ms rustc 1.84.0
rust 7.rs 134ms 2.4ms 1.9MB 127ms 0ms rustc 1.84.0
rust 2.rs 265ms 1.3ms 2.0MB 253ms 0ms rustc 1.84.0
ocaml 2.ml 292ms 4.1ms 5.3MB 283ms 0ms ocaml 5.3.0