Programming Language and compiler
Benchmarks

OCaml VS D 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
d 1.d 1796ms 1.6ms 312.6MB 1770ms 33ms ldc2 1.40.1
d 1.d 2825ms 142ms 314.8MB 3023ms 47ms dmd 2.110.0
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
d 1.d 164ms 2.0ms 209.8MB 140ms 13ms ldc2 1.40.1
ocaml 1.ml 228ms 11ms 19.2MB 213ms 0ms ocaml 5.3.0
d 1.d 231ms 4.2ms 211.8MB 203ms 10ms dmd 2.110.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 374ms 3.2ms 2.9MB 1423ms 0ms ldc2 1.40.1
d 2-im.d 1118ms 5.5ms 3.1MB 4320ms 0ms ldc2 1.40.1
d 1-i.d 1486ms 1.8ms 2.9MB 1480ms 0ms ldc2 1.40.1
ocaml 2.ml 2918ms 4.8ms 4.9MB 2910ms 0ms ocaml 5.3.0
d 1.d 3116ms 13ms 2.9MB 3107ms 0ms ldc2 1.40.1
d 2-i.d 3239ms 1.2ms 2.9MB 3230ms 0ms ldc2 1.40.1
d 1.d 3554ms 9.4ms 4.6MB 3543ms 0ms dmd 2.110.0
d 1-im.d 4461ms 10ms 4.8MB 17470ms 7ms dmd 2.110.0
d 1-i.d timeout 0.0ms 4.5MB 4990ms 0ms dmd 2.110.0
d 2-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.110.0
d 2-im.d timeout 0.0ms 4.9MB 19733ms 3ms dmd 2.110.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 37ms 0.1ms 3.0MB 110ms 0ms ldc2 1.40.1
d 2-im.d 98ms 2.1ms 3.1MB 350ms 0ms ldc2 1.40.1
d 1-i.d 126ms 2.3ms 2.9MB 120ms 0ms ldc2 1.40.1
ocaml 2.ml 245ms 1.4ms 4.9MB 237ms 0ms ocaml 5.3.0
d 1.d 265ms 2.7ms 2.9MB 257ms 0ms ldc2 1.40.1
d 2-i.d 268ms 0.7ms 2.9MB 260ms 0ms ldc2 1.40.1
d 1.d 297ms 1.1ms 4.6MB 290ms 0ms dmd 2.110.0
d 1-im.d 376ms 5.0ms 4.9MB 1430ms 0ms dmd 2.110.0
d 2-im.d 526ms 1.6ms 4.9MB 2010ms 0ms dmd 2.110.0
d 1-i.d 857ms 5.5ms 4.5MB 847ms 0ms dmd 2.110.0
d 2-i.d 1387ms 14ms 4.6MB 1377ms 0ms dmd 2.110.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 194ms 1.4ms 49.1MB 180ms 0ms ldc2 1.40.1
ocaml 6.ml 345ms 0.3ms 24.8MB 330ms 0ms ocaml 5.3.0
d 1.d 628ms 6.9ms 45.2MB 613ms 7ms dmd 2.110.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 25ms 1.4ms 11.1MB 17ms 0ms ldc2 1.40.1
ocaml 6.ml 39ms 0.3ms 7.3MB 30ms 0ms ocaml 5.3.0
d 1.d 67ms 1.1ms 11.1MB 60ms 0ms dmd 2.110.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1.6ms 0.1ms 3.0MB 0ms 0ms ldc2 1.40.1
ocaml 1.ml 1.9ms 0.2ms 5.1MB 0ms 0ms ocaml 5.3.0
d 1.d 2.2ms 0.3ms 5.0MB 0ms 0ms dmd 2.110.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 132ms 0.5ms 5.9MB 123ms 0ms ldc2 1.40.1
d 1.d 177ms 2.7ms 7.9MB 163ms 7ms dmd 2.110.0
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
d 1.d 374ms 1.0ms 5.9MB 363ms 13ms ldc2 1.40.1
d 1.d 514ms 1.2ms 7.9MB 500ms 13ms dmd 2.110.0
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
d 1.d 57ms 0.9ms 5.9MB 43ms 0ms ldc2 1.40.1
ocaml 1.ml 77ms 0.5ms 6.1MB 70ms 0ms ocaml 5.3.0
d 1.d 80ms 1.3ms 7.9MB 70ms 0ms dmd 2.110.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 988ms 12ms 312.6MB 960ms 33ms ldc2 1.40.1
ocaml 1.ml 1104ms 1.1ms 70.3MB 1060ms 30ms ocaml 5.3.0
d 1.d 1785ms 13ms 314.7MB 1923ms 40ms dmd 2.110.0
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
d 1.d 198ms 1.8ms 312.7MB 163ms 23ms ldc2 1.40.1
d 1.d 350ms 9.4ms 314.7MB 320ms 27ms dmd 2.110.0
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
d 1.d 362ms 1.8ms 2.9MB 350ms 0ms ldc2 1.40.1
d 2.d 362ms 0.4ms 2.9MB 350ms 0ms ldc2 1.40.1
ocaml 1.ml 374ms 0.4ms 5.3MB 367ms 0ms ocaml 5.3.0
d 1.d 682ms 4.0ms 4.6MB 673ms 0ms dmd 2.110.0
d 2.d 2040ms 13ms 4.6MB 2033ms 0ms dmd 2.110.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 39ms 0.1ms 2.9MB 30ms 0ms ldc2 1.40.1
d 1.d 39ms 0.4ms 2.9MB 30ms 0ms ldc2 1.40.1
ocaml 1.ml 41ms 0.7ms 5.2MB 30ms 0ms ocaml 5.3.0
d 1.d 71ms 0.3ms 4.6MB 60ms 0ms dmd 2.110.0
d 2.d 210ms 3.6ms 4.5MB 203ms 0ms dmd 2.110.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 330ms 2.6ms 43.1MB 317ms 3ms ldc2 1.40.1
d 1.d 369ms 6.5ms 77.3MB 353ms 7ms dmd 2.110.0
d 2.d 843ms 1.5ms 46.9MB 823ms 0ms ldc2 1.40.1
ocaml 1.ml 1019ms 4.4ms 544.4MB 960ms 43ms ocaml 5.3.0
d 2.d 1168ms 2.1ms 48.7MB 1150ms 10ms dmd 2.110.0
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
d 1.d 64ms 1.5ms 15.0MB 57ms 0ms ldc2 1.40.1
d 1.d 77ms 3.4ms 27.2MB 67ms 0ms dmd 2.110.0
ocaml 1.ml 197ms 0.6ms 128.8MB 173ms 10ms ocaml 5.3.0
d 2.d 209ms 2.5ms 17.1MB 200ms 0ms ldc2 1.40.1
d 2.d 294ms 1.0ms 18.9MB 280ms 0ms dmd 2.110.0
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
d 3.d 584ms 5.3ms 171.9MB 767ms 20ms ldc2 1.40.1
d 3.d 1308ms 5.8ms 172.7MB 1500ms 20ms dmd 2.110.0
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
d 3.d 64ms 1.1ms 27.6MB 70ms 0ms ldc2 1.40.1
d 3.d 139ms 5.6ms 30.4MB 153ms 0ms dmd 2.110.0
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
d 1.d 3600ms 4.4ms 3.9MB 3587ms 0ms ldc2 1.40.1
d 1.d 3654ms 31ms 5.9MB 3643ms 0ms dmd 2.110.0
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
d 1.d 901ms 1.0ms 3.8MB 890ms 0ms ldc2 1.40.1
d 1.d 922ms 0.8ms 7.6MB 910ms 0ms dmd 2.110.0
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
d 1.d 228ms 0.3ms 3.0MB 220ms 0ms ldc2 1.40.1
d 1.d 233ms 1.2ms 5.0MB 220ms 0ms dmd 2.110.0
ocaml 2.ml 296ms 5.1ms 5.2MB 287ms 0ms ocaml 5.3.0