Programming Language and compiler
Benchmarks

OCaml VS Java benchmarks

Current benchmark data was generated on Mon Apr 14 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
java 2.java 461ms 12ms 574.0MB 563ms 83ms openjdk 21
java 2.java 480ms 4.7ms 624.4MB 600ms 97ms openjdk 23
java 2-m.java 481ms 6.8ms 642.9MB 670ms 120ms graal/jvm 17.0.8
java 2.java 1174ms 6.5ms 1067.3MB 593ms 750ms openjdk/zgc 21
ocaml 1.ml 3140ms 30ms 157.0MB 3057ms 70ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2.java 125ms 2.4ms 165.6MB 157ms 30ms openjdk 21
java 2.java 135ms 5.3ms 96.2MB 173ms 27ms openjdk 23
java 2-m.java 150ms 5.9ms 224.4MB 227ms 53ms graal/jvm 17.0.8
ocaml 1.ml 226ms 2.6ms 19.2MB 210ms 0ms ocaml 5.3.0
java 2.java 304ms 2.2ms 241.6MB 157ms 203ms openjdk/zgc 21

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1-m.java 911ms 6.0ms 96.1MB 3347ms 33ms graal/jvm 17.0.8
java 1-m.java 953ms 33ms 48.3MB 3547ms 20ms openjdk 21
java 1-m.java 980ms 19ms 51.0MB 3597ms 23ms openjdk 23
java 1-m.java 1046ms 9.7ms 45.8MB 3413ms 143ms openjdk/zgc 21
ocaml 2.ml 2917ms 2.7ms 4.9MB 2907ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1-m.java 184ms 2.3ms 48.2MB 500ms 20ms openjdk 21
java 1-m.java 197ms 4.9ms 96.2MB 543ms 40ms graal/jvm 17.0.8
java 1-m.java 199ms 6.2ms 50.0MB 510ms 23ms openjdk 23
ocaml 2.ml 249ms 3.0ms 4.9MB 240ms 0ms ocaml 5.3.0
java 1-m.java 312ms 5.2ms 45.8MB 507ms 143ms openjdk/zgc 21

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 6.ml 345ms 0.4ms 24.9MB 333ms 0ms ocaml 5.3.0
java 4.java 446ms 6.7ms 102.7MB 630ms 37ms graal/jvm 17.0.8
java 4.java 453ms 2.9ms 47.7MB 537ms 17ms openjdk 21
java 4.java 462ms 5.5ms 49.0MB 553ms 20ms openjdk 23
java 4.java 574ms 8.7ms 45.3MB 550ms 140ms openjdk/zgc 21

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 6.ml 39ms 0.6ms 7.5MB 30ms 0ms ocaml 5.3.0
java 4.java 125ms 2.4ms 46.7MB 167ms 20ms openjdk 21
java 4.java 134ms 2.5ms 47.9MB 180ms 20ms openjdk 23
java 4-m.java 134ms 4.6ms 91.8MB 193ms 37ms graal/jvm 17.0.8
java 4.java 250ms 3.6ms 43.9MB 170ms 137ms openjdk/zgc 21

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 1.9ms 0.0ms 5.1MB 0ms 0ms ocaml 5.3.0
java 1.java 63ms 1.5ms 52.7MB 70ms 20ms graal/jvm 17.0.8
java 1.java 72ms 3.3ms 44.4MB 74ms 20ms openjdk 23
java 1.java 73ms 1.7ms 43.8MB 80ms 14ms openjdk 21
java 1.java 193ms 6.2ms 43.0MB 84ms 140ms openjdk/zgc 21

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 188ms 1.5ms 6.4MB 180ms 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 542ms 24ms 6.6MB 530ms 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 78ms 1.1ms 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
java 1.java 413ms 2.5ms 537.5MB 517ms 87ms openjdk 23
java 1.java 423ms 5.1ms 677.8MB 480ms 113ms openjdk 21
java 1-m.java 427ms 10ms 641.7MB 603ms 127ms graal/jvm 17.0.8
java 1.java 1047ms 30ms 965.9MB 463ms 723ms openjdk/zgc 21
ocaml 1.ml 1141ms 35ms 70.2MB 1100ms 30ms ocaml 5.3.0
ocaml 2.ml 2156ms 13ms 91.8MB 2103ms 37ms ocaml 5.3.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 161ms 4.4ms 21.6MB 143ms 7ms ocaml 5.3.0
java 1-m.java 171ms 3.8ms 206.1MB 240ms 50ms openjdk 21
java 1-m.java 171ms 0.9ms 158.6MB 250ms 43ms openjdk 23
java 1-m.java 215ms 11ms 253.5MB 353ms 63ms graal/jvm 17.0.8
ocaml 2.ml 362ms 1.5ms 27.7MB 343ms 3ms ocaml 5.3.0
java 1.java 424ms 13ms 341.9MB 223ms 283ms openjdk/zgc 21

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 374ms 1.4ms 5.3MB 363ms 0ms ocaml 5.3.0
java 1.java 449ms 6.5ms 81.4MB 477ms 30ms graal/jvm 17.0.8
java 1.java 451ms 0.4ms 48.3MB 487ms 17ms openjdk 23
java 1.java 457ms 15ms 45.3MB 490ms 17ms openjdk 21
java 1.java 571ms 1.4ms 44.9MB 493ms 137ms openjdk/zgc 21
java 2.java 1260ms 11ms 640.1MB 1390ms 87ms openjdk 21
java 2.java 1275ms 9.1ms 826.3MB 1380ms 123ms openjdk 23
java 2.java 3279ms 125ms 2446.0MB 1647ms 1853ms openjdk/zgc 21

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 41ms 1.6ms 5.2MB 30ms 0ms ocaml 5.3.0
java 1.java 118ms 2.8ms 81.5MB 143ms 30ms graal/jvm 17.0.8
java 1.java 123ms 2.0ms 45.2MB 163ms 20ms openjdk 21
java 1.java 124ms 4.2ms 48.2MB 157ms 20ms openjdk 23
java 1.java 251ms 4.1ms 44.9MB 173ms 140ms openjdk/zgc 21
java 2-m.java 305ms 5.3ms 394.5MB 447ms 60ms openjdk 21
java 2-m.java 328ms 5.1ms 392.1MB 470ms 70ms openjdk 23
java 2.java 687ms 2.7ms 524.4MB 477ms 407ms openjdk/zgc 21

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 431ms 12ms 115.9MB 483ms 23ms openjdk 21
java 1.java 477ms 33ms 118.4MB 523ms 27ms openjdk 23
java 1-m.java 620ms 8.0ms 218.4MB 897ms 63ms graal/jvm 17.0.8
java 1.java 625ms 9.3ms 112.7MB 537ms 163ms openjdk/zgc 21
java 2.java 782ms 2.9ms 56.8MB 840ms 17ms openjdk 21
java 2.java 801ms 16ms 60.2MB 853ms 20ms openjdk 23
java 2.java 850ms 3.1ms 53.3MB 780ms 147ms openjdk/zgc 21
ocaml 1.ml 1018ms 5.8ms 550.4MB 963ms 40ms ocaml 5.3.0
java 2-m.java 1327ms 5.9ms 242.0MB 2380ms 100ms graal/jvm 17.0.8
ocaml 2.ml 1884ms 9.4ms 17.2MB 1867ms 0ms ocaml 5.3.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 154ms 3.2ms 64.7MB 203ms 20ms openjdk 21
java 1.java 160ms 4.0ms 68.3MB 207ms 20ms openjdk 23
ocaml 1.ml 203ms 4.9ms 140.7MB 183ms 10ms ocaml 5.3.0
java 1-m.java 205ms 7.0ms 124.6MB 293ms 37ms graal/jvm 17.0.8
java 2.java 265ms 1.0ms 49.9MB 323ms 27ms openjdk 21
java 2.java 271ms 2.5ms 50.6MB 327ms 23ms openjdk 23
java 1.java 288ms 1.8ms 61.5MB 213ms 147ms openjdk/zgc 21
java 2.java 374ms 4.3ms 47.6MB 313ms 143ms openjdk/zgc 21
ocaml 2.ml 463ms 1.3ms 9.1MB 450ms 0ms ocaml 5.3.0
java 2-m.java 478ms 6.0ms 149.5MB 853ms 60ms graal/jvm 17.0.8

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 3.java timeout 0.0ms 398.2MB 5417ms 97ms graal/jvm 17.0.8
java 3.java timeout 0.0ms 302.2MB 5330ms 53ms openjdk 21
java 3.java timeout 0.0ms 304.6MB 5330ms 63ms openjdk 23
java 3.java timeout 0.0ms 466.7MB 4970ms 297ms openjdk/zgc 21
ocaml 2.ml timeout 0.0ms 462.9MB 4810ms 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 551ms 8.1ms 57.1MB 517ms 23ms ocaml 5.3.0
java 3-m.java 780ms 24ms 175.7MB 1163ms 50ms graal/jvm 17.0.8
java 3-m.java 800ms 6.0ms 131.0MB 1180ms 30ms openjdk 21
java 3-m.java 844ms 52ms 132.6MB 1283ms 40ms openjdk 23
java 3.java 995ms 16ms 134.2MB 1203ms 190ms openjdk/zgc 21

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2-m.java 1996ms 8.8ms 47.7MB 7623ms 27ms openjdk 21
java 2-m.java 2011ms 5.1ms 48.3MB 7643ms 27ms openjdk 23
java 2-m.java 2140ms 20ms 45.4MB 7653ms 150ms openjdk/zgc 21
java 2-m.java 2509ms 8.6ms 94.2MB 9357ms 43ms graal/jvm 17.0.8
ocaml 2.ml 4555ms 3.1ms 6.3MB 4543ms 0ms ocaml 5.3.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2-m.java 607ms 5.8ms 47.6MB 2140ms 23ms openjdk 21
java 2-m.java 621ms 7.5ms 48.9MB 2170ms 23ms openjdk 23
java 2-m.java 743ms 7.4ms 45.4MB 2183ms 143ms openjdk/zgc 21
java 2-m.java 769ms 3.8ms 95.1MB 2703ms 37ms graal/jvm 17.0.8
ocaml 2.ml 1144ms 2.0ms 6.1MB 1137ms 0ms ocaml 5.3.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2-m.java 248ms 3.4ms 47.9MB 757ms 17ms openjdk 21
java 2-m.java 270ms 8.8ms 48.8MB 790ms 27ms openjdk 23
ocaml 2.ml 294ms 3.8ms 5.2MB 287ms 0ms ocaml 5.3.0
java 2-m.java 321ms 25ms 94.1MB 983ms 40ms graal/jvm 17.0.8
java 2-m.java 400ms 6.1ms 45.6MB 820ms 153ms openjdk/zgc 21