Codon VS OCaml benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

CPU INFO:[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -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.)

show numbers without parallelization

show numbers with parallelization

helloworld

Input: QwQ

lang	code	time	stddev	peak-mem mem	time(user)	time(sys)	compiler compiler/runtime
ocaml	1.ml	2.3ms	0.5ms	3.1MB	0ms	0ms	ocaml 5.3.0
codon	1.py	9.9ms	0.8ms	10.9MB	7ms	3ms	codon 0.20.2

nbody

Input: 5000000

lang	code	time	stddev	peak-mem mem	time(user)	time(sys)	compiler compiler/runtime
ocaml	1.ml	697ms	7.9ms	2.7MB	687ms	0ms	ocaml 5.3.0
codon	1.py	2621ms	35ms	11.0MB	2900ms	0ms	codon 0.20.2

Input: 500000

lang	code	time	stddev	peak-mem mem	time(user)	time(sys)	compiler compiler/runtime
ocaml	1.ml	75ms	1.3ms	2.7MB	67ms	0ms	ocaml 5.3.0
codon	1-m.py	357ms	59ms	11.0MB	610ms	0ms	codon 0.20.2

nsieve

Input: 12

lang	code	time	stddev	peak-mem mem	time(user)	time(sys)	compiler compiler/runtime
codon	2.py	1317ms	10ms	110.4MB	1597ms	10ms	codon 0.20.2
codon	1.py	1510ms	4.1ms	49.9MB	1783ms	10ms	codon 0.20.2
ocaml	1.ml	1803ms	29ms	547.7MB	1730ms	57ms	ocaml 5.3.0
ocaml	2.ml	3669ms	69ms	19.0MB	3653ms	0ms	ocaml 5.3.0

Input: 10

lang	code	time	stddev	peak-mem mem	time(user)	time(sys)	compiler compiler/runtime
codon	2-m.py	292ms	4.4ms	29.3MB	570ms	3ms	codon 0.20.2
codon	1-m.py	358ms	6.6ms	20.7MB	643ms	0ms	codon 0.20.2
ocaml	1.ml	424ms	2.5ms	133.8MB	393ms	13ms	ocaml 5.3.0
ocaml	2.ml	745ms	19ms	9.3MB	730ms	0ms	ocaml 5.3.0