Programming Language and compiler
Benchmarks

OCaml VS D 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
d 1.d 1806ms 33ms 312.6MB 1780ms 33ms ldc2 1.40.1
d 1.d 2698ms 1.3ms 314.7MB 2880ms 47ms dmd 2.110.0
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
d 1.d 166ms 2.5ms 210.0MB 137ms 17ms ldc2 1.40.1
ocaml 1.ml 223ms 5.5ms 19.1MB 203ms 3ms ocaml 5.3.0
d 1.d 233ms 6.2ms 212.0MB 207ms 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 379ms 4.8ms 2.9MB 1423ms 0ms ldc2 1.40.1
d 2-im.d 1118ms 4.1ms 3.0MB 4320ms 0ms ldc2 1.40.1
d 1-i.d 1485ms 1.1ms 2.9MB 1473ms 0ms ldc2 1.40.1
ocaml 2.ml 2920ms 14ms 4.9MB 2910ms 0ms ocaml 5.3.0
d 1.d 3110ms 7.8ms 2.8MB 3103ms 0ms ldc2 1.40.1
d 2-i.d 3237ms 0.3ms 2.9MB 3230ms 0ms ldc2 1.40.1
d 1.d 3555ms 11ms 4.6MB 3543ms 0ms dmd 2.110.0
d 1-im.d 4484ms 26ms 4.8MB 17543ms 3ms 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 4.5MB 4990ms 0ms dmd 2.110.0
d 2-im.d timeout 0.0ms 4.8MB 19730ms 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 0.4ms 3.0MB 110ms 0ms ldc2 1.40.1
d 2-im.d 99ms 1.3ms 3.0MB 347ms 0ms ldc2 1.40.1
d 1-i.d 124ms 0.4ms 2.9MB 113ms 0ms ldc2 1.40.1
ocaml 2.ml 246ms 2.4ms 4.9MB 237ms 0ms ocaml 5.3.0
d 1.d 263ms 0.9ms 2.9MB 253ms 0ms ldc2 1.40.1
d 2-i.d 268ms 0.8ms 2.9MB 260ms 0ms ldc2 1.40.1
d 1.d 300ms 1.1ms 4.6MB 290ms 0ms dmd 2.110.0
d 1-im.d 380ms 3.5ms 4.9MB 1427ms 0ms dmd 2.110.0
d 2-im.d 527ms 5.2ms 4.8MB 2000ms 0ms dmd 2.110.0
d 1-i.d 866ms 17ms 4.9MB 860ms 0ms dmd 2.110.0
d 2-i.d 1377ms 12ms 4.5MB 1367ms 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 2.0ms 49.1MB 180ms 0ms ldc2 1.40.1
ocaml 6.ml 347ms 0.6ms 24.8MB 333ms 0ms ocaml 5.3.0
d 1.d 623ms 3.0ms 51.5MB 613ms 0ms dmd 2.110.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 24ms 0.4ms 11.0MB 10ms 0ms ldc2 1.40.1
ocaml 6.ml 39ms 0.3ms 7.3MB 30ms 0ms ocaml 5.3.0
d 1.d 67ms 0.2ms 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 1.7ms 0.1ms 3.0MB 0ms 0ms ldc2 1.40.1
ocaml 1.ml 1.9ms 0.1ms 5.0MB 0ms 0ms ocaml 5.3.0
d 1.d 2.4ms 0.3ms 5.1MB 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 130ms 1.7ms 5.9MB 123ms 0ms ldc2 1.40.1
d 1.d 176ms 2.9ms 7.9MB 170ms 0ms dmd 2.110.0
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
d 1.d 377ms 1.7ms 5.9MB 363ms 17ms ldc2 1.40.1
d 1.d 518ms 5.4ms 8.3MB 503ms 17ms dmd 2.110.0
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
d 1.d 57ms 0.8ms 6.1MB 47ms 0ms ldc2 1.40.1
ocaml 1.ml 76ms 0.7ms 5.9MB 70ms 0ms ocaml 5.3.0
d 1.d 82ms 1.5ms 8.3MB 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 965ms 16ms 312.6MB 933ms 33ms ldc2 1.40.1
ocaml 1.ml 1097ms 8.4ms 70.3MB 1057ms 30ms ocaml 5.3.0
d 1.d 1744ms 13ms 314.7MB 1880ms 43ms dmd 2.110.0
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
d 1.d 195ms 2.0ms 312.6MB 160ms 27ms ldc2 1.40.1
d 1.d 336ms 1.6ms 314.9MB 303ms 27ms dmd 2.110.0
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
d 2.d 361ms 0.7ms 2.8MB 350ms 0ms ldc2 1.40.1
d 1.d 362ms 1.6ms 2.9MB 350ms 0ms ldc2 1.40.1
ocaml 1.ml 377ms 1.5ms 5.3MB 367ms 0ms ocaml 5.3.0
d 1.d 682ms 2.8ms 4.6MB 670ms 0ms dmd 2.110.0
d 2.d 2081ms 79ms 4.5MB 2070ms 0ms dmd 2.110.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 39ms 0.4ms 2.9MB 30ms 0ms ldc2 1.40.1
d 2.d 40ms 0.3ms 2.8MB 30ms 0ms ldc2 1.40.1
ocaml 1.ml 40ms 1.1ms 5.2MB 30ms 0ms ocaml 5.3.0
d 1.d 73ms 0.3ms 4.5MB 60ms 0ms dmd 2.110.0
d 2.d 208ms 2.7ms 4.6MB 200ms 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 324ms 19ms 45.1MB 307ms 0ms ldc2 1.40.1
d 1.d 368ms 7.4ms 77.3MB 353ms 0ms dmd 2.110.0
d 2.d 846ms 3.0ms 49.1MB 827ms 7ms ldc2 1.40.1
ocaml 1.ml 961ms 7.1ms 552.4MB 900ms 47ms ocaml 5.3.0
d 2.d 1177ms 6.0ms 51.2MB 1163ms 3ms dmd 2.110.0
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
d 1.d 64ms 2.8ms 15.0MB 50ms 0ms ldc2 1.40.1
d 1.d 77ms 2.3ms 27.2MB 67ms 0ms dmd 2.110.0
ocaml 1.ml 191ms 10ms 142.3MB 167ms 10ms ocaml 5.3.0
d 2.d 209ms 1.8ms 17.0MB 200ms 0ms ldc2 1.40.1
d 2.d 294ms 2.2ms 18.9MB 280ms 0ms dmd 2.110.0
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
d 3.d 579ms 2.6ms 171.8MB 763ms 17ms ldc2 1.40.1
d 3.d 1297ms 5.8ms 176.9MB 1490ms 20ms dmd 2.110.0
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
d 3.d 63ms 2.5ms 25.2MB 73ms 0ms ldc2 1.40.1
d 3.d 138ms 5.5ms 30.5MB 150ms 0ms dmd 2.110.0
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
d 1.d 3594ms 1.3ms 3.9MB 3580ms 0ms ldc2 1.40.1
d 1.d 3667ms 17ms 5.9MB 3657ms 0ms dmd 2.110.0
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
d 1.d 901ms 1.7ms 3.5MB 890ms 0ms ldc2 1.40.1
d 1.d 924ms 11ms 5.1MB 913ms 0ms dmd 2.110.0
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
d 1.d 228ms 0.5ms 3.1MB 220ms 0ms ldc2 1.40.1
d 1.d 234ms 2.2ms 7.5MB 223ms 0ms dmd 2.110.0
ocaml 2.ml 290ms 2.8ms 5.2MB 280ms 0ms ocaml 5.3.0