Programming Language and compiler
Benchmarks

OCaml VS Python benchmarks

Current benchmark data was generated on Tue Dec 31 2024, 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
python 1.py 1086ms 7.1ms 95.8MB 1023ms 47ms pypy 3.10.14
ocaml 1.ml 2855ms 30ms 132.4MB 2783ms 53ms ocaml 5.2.1
python 1.py timeout 0.0ms 40.8MB 4967ms 17ms cpython 3.13.1
python 1.py timeout 0.0ms 40.5MB 4750ms 237ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 93ms 4.4ms 68.1MB 57ms 20ms pypy 3.10.14
ocaml 1.ml 205ms 3.3ms 19.1MB 187ms 0ms ocaml 5.2.1
python 1.py 448ms 2.5ms 11.9MB 423ms 7ms pyston 3.8.12
python 1.py 675ms 16ms 12.6MB 660ms 0ms cpython 3.13.1

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 2795ms 29ms 4.9MB 2783ms 0ms ocaml 5.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 234ms 2.1ms 4.9MB 223ms 0ms ocaml 5.2.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 6.ml 329ms 3.1ms 24.9MB 313ms 0ms ocaml 5.2.1
python 1.py 1807ms 11ms 88.3MB 1767ms 30ms pypy 3.10.14
python 5-m.py 2335ms 46ms 12.5MB 3357ms 953ms pyston 3.8.12
python 5-m.py 2672ms 21ms 64.9MB 3783ms 763ms pypy 3.10.14
python 1.py 2864ms 24ms 8.1MB 2850ms 3ms pyston 3.8.12
python 5-m.py 3195ms 8.8ms 13.8MB 4240ms 883ms cpython 3.13.1
python 1.py 4308ms 7.9ms 8.8MB 4297ms 0ms cpython 3.13.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 6.ml 37ms 0.4ms 7.4MB 27ms 0ms ocaml 5.2.1
python 1.py 238ms 5.8ms 63.6MB 210ms 13ms pypy 3.10.14
python 5-m.py 295ms 6.0ms 12.5MB 383ms 127ms pyston 3.8.12
python 1.py 299ms 3.5ms 8.1MB 287ms 0ms pyston 3.8.12
python 5-m.py 377ms 1.5ms 13.8MB 457ms 123ms cpython 3.13.1
python 1.py 451ms 3.5ms 8.8MB 440ms 3ms cpython 3.13.1
python 5-m.py 510ms 5.7ms 64.9MB 750ms 283ms pypy 3.10.14

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 1.7ms 0.2ms 4.9MB 0ms 0ms ocaml 5.2.1
python 1.py 11ms 0.8ms 7.6MB 0ms 0ms pyston 3.8.12
python 1.py 13ms 1.3ms 8.5MB 10ms 0ms cpython 3.13.1
python 1.py 26ms 0.9ms 51.0MB 8ms 8ms pypy 3.10.14

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 143ms 0.8ms 57.9MB 117ms 13ms pypy 3.10.14
ocaml 1.ml 165ms 2.2ms 6.4MB 157ms 0ms ocaml 5.2.1
python 1.py 172ms 3.1ms 59.5MB 147ms 10ms pypy 3.10.14
python 1.py 694ms 2.8ms 8.9MB 687ms 0ms pyston 3.8.12
python 2.py 790ms 4.9ms 8.5MB 773ms 0ms pyston 3.8.12
python 1.py 1060ms 5.7ms 9.3MB 1043ms 0ms cpython 3.13.1
python 2.py 1262ms 16ms 9.0MB 1247ms 0ms cpython 3.13.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 321ms 7.8ms 58.9MB 293ms 10ms pypy 3.10.14
python 1.py 360ms 5.5ms 60.4MB 337ms 10ms pypy 3.10.14
ocaml 1.ml 496ms 9.3ms 6.6MB 483ms 0ms ocaml 5.2.1
python 1.py 2016ms 25ms 8.9MB 2000ms 0ms pyston 3.8.12
python 2.py 2346ms 34ms 8.5MB 2333ms 0ms pyston 3.8.12
python 1.py 3111ms 15ms 9.3MB 3093ms 3ms cpython 3.13.1
python 2.py 3679ms 12ms 9.0MB 3667ms 0ms cpython 3.13.1

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 73ms 2.1ms 5.9MB 60ms 0ms ocaml 5.2.1
python 2.py 101ms 2.0ms 57.8MB 77ms 10ms pypy 3.10.14
python 1.py 115ms 1.3ms 58.5MB 90ms 10ms pypy 3.10.14
python 1.py 328ms 7.8ms 8.5MB 313ms 0ms pyston 3.8.12
python 2.py 366ms 15ms 8.1MB 350ms 0ms pyston 3.8.12
python 1.py 503ms 5.9ms 9.1MB 483ms 0ms cpython 3.13.1
python 2.py 613ms 10ms 8.8MB 600ms 0ms cpython 3.13.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 1039ms 0.6ms 70.2MB 997ms 27ms ocaml 5.2.1
ocaml 2.ml 1948ms 8.6ms 91.8MB 1900ms 30ms ocaml 5.2.1
python 1.py 2111ms 2.8ms 210.1MB 2007ms 83ms pypy 3.10.14
python 1.py timeout 0.0ms 93.9MB 4963ms 23ms cpython 3.13.1
python 1.py timeout 0.0ms 130.4MB 4933ms 53ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 143ms 1.0ms 21.7MB 130ms 3ms ocaml 5.2.1
ocaml 2.ml 342ms 3.9ms 27.7MB 317ms 7ms ocaml 5.2.1
python 1.py 360ms 5.1ms 103.6MB 297ms 50ms pypy 3.10.14
python 1.py 2752ms 61ms 37.2MB 2727ms 7ms cpython 3.13.1
python 1.py 4838ms 94ms 48.9MB 4770ms 50ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 351ms 2.4ms 5.2MB 340ms 0ms ocaml 5.2.1
python 2.py 1278ms 0.7ms 59.8MB 1253ms 10ms pypy 3.10.14
python 1.py 2492ms 13ms 56.6MB 2467ms 10ms pypy 3.10.14
python 1.py timeout 0.0ms 8.6MB 4983ms 0ms cpython 3.13.1
python 2.py timeout 0.0ms 8.8MB 4987ms 0ms cpython 3.13.1
python 1.py timeout 0.0ms 8.3MB 4987ms 0ms pyston 3.8.12
python 2.py timeout 0.0ms 8.1MB 4990ms 0ms pyston 3.8.12

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 40ms 1.6ms 5.2MB 30ms 0ms ocaml 5.2.1
python 2.py 165ms 1.2ms 57.8MB 143ms 10ms pypy 3.10.14
python 1.py 284ms 2.2ms 56.6MB 267ms 3ms pypy 3.10.14
python 1.py 892ms 9.1ms 8.3MB 883ms 0ms pyston 3.8.12
python 2.py 1234ms 13ms 8.3MB 1220ms 0ms pyston 3.8.12
python 1.py 2829ms 9.3ms 8.8MB 2813ms 0ms cpython 3.13.1
python 2.py 3043ms 23ms 8.8MB 3030ms 0ms cpython 3.13.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 887ms 4.5ms 550.8MB 827ms 43ms ocaml 5.2.1
ocaml 2.ml 1822ms 17ms 18.6MB 1810ms 0ms ocaml 5.2.1
python 1.py 2328ms 43ms 369.1MB 2263ms 47ms pypy 3.10.14
python 2.py 2768ms 15ms 632.9MB 2590ms 163ms pyston 3.8.12
python 1.py 4623ms 31ms 320.4MB 4567ms 40ms pyston 3.8.12
python 1.py timeout 0.0ms 321.1MB 4953ms 27ms cpython 3.13.1
python 2.py timeout 0.0ms 633.5MB 4813ms 170ms cpython 3.13.1
python 2.py timeout 0.0ms 959.3MB 4743ms 243ms pypy 3.10.14

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 1.ml 171ms 3.0ms 142.3MB 147ms 10ms ocaml 5.2.1
ocaml 2.ml 451ms 8.0ms 9.1MB 437ms 0ms ocaml 5.2.1
python 1.py 497ms 14ms 134.7MB 467ms 17ms pypy 3.10.14
python 2.py 679ms 22ms 164.2MB 630ms 30ms pyston 3.8.12
python 1.py 1022ms 10ms 86.0MB 1000ms 3ms pyston 3.8.12
python 2.py 1327ms 14ms 164.8MB 1283ms 27ms cpython 3.13.1
python 2.py 1463ms 8.1ms 289.7MB 1363ms 80ms pypy 3.10.14
python 1.py 2501ms 11ms 86.9MB 2473ms 10ms cpython 3.13.1

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2122ms 9.7ms 243.2MB 2060ms 43ms pypy 3.10.14
python 1.py 4481ms 9.0ms 226.3MB 4283ms 180ms pyston 3.8.12
ocaml 2.ml 4814ms 25ms 484.9MB 4640ms 157ms ocaml 5.2.1
python 1.py timeout 0.0ms 165.8MB 4940ms 40ms cpython 3.13.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 310ms 4.2ms 85.0MB 273ms 20ms pypy 3.10.14
python 1.py 468ms 2.3ms 30.5MB 440ms 13ms pyston 3.8.12
ocaml 2.ml 488ms 5.4ms 57.1MB 447ms 30ms ocaml 5.2.1
python 1.py 594ms 8.6ms 31.0MB 557ms 23ms cpython 3.13.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 4270ms 34ms 6.3MB 4260ms 0ms ocaml 5.2.1
python 8.py timeout 0.0ms 16.7MB 43ms 13ms cpython 3.13.1
python 8.py timeout 0.0ms 99.4MB 790ms 163ms pypy 3.10.14
python 8.py timeout 0.0ms 16.5MB 67ms 20ms pyston 3.8.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 1068ms 1.5ms 5.9MB 1057ms 0ms ocaml 5.2.1
python 8.py timeout 0.0ms 16.5MB 87ms 20ms cpython 3.13.1
python 8.py timeout 0.0ms 100.4MB 1460ms 480ms pypy 3.10.14
python 8.py timeout 0.0ms 15.6MB 147ms 37ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ocaml 2.ml 269ms 1.8ms 5.2MB 257ms 0ms ocaml 5.2.1
python 8-m.py 1880ms 5.8ms 95.0MB 6000ms 323ms pypy 3.10.14
python 8.py timeout 0.0ms 16.2MB 233ms 33ms cpython 3.13.1
python 8.py timeout 0.0ms 17.2MB 440ms 127ms pyston 3.8.12