Clojure vs Python 3 | Computer Language Benchmarks Game

1 : Are the Clojure programs faster? At a glance.

Each chart bar shows, for one unidentified benchmark, how much the fastest Clojure program used compared to the fastest Python 3 program.

These are not the only compilers and interpreters. These are not the only programs that could be written. These are not the only tasks that could be solved. These are just 10 tiny examples.

2 : Are the Clojure programs faster? Approximately.

Each table row shows, for one named benchmark, how much the fastest Clojure program used compared to the fastest Python 3 program.

Clojure used what fraction? used how many times more?
Benchmark	Time	Memory	Code
spectral-norm	¹/₃₇	±	2×
n-body	¹/₃₆	8×	2×
mandelbrot	¹/₃₀	¹/₂	±
fasta	¹/₂₁	10×	2×
fannkuch-redux	¹/₁₈	2×	±
binary-trees	¹/₈	¹/₂	±
k-nucleotide	¹/₄	2×	5×
reverse-complement †	¹/₂	¹/₂	3×
regex-dna	2×	2×	±
pidigits †	9×	12×	2×

Clojure used what fraction? used how many times more?
Time-used	\|-	\|---	25%	median	75%	---\|	-\|
(Elapsed secs)	¹/₃₇	¹/₃₇	¹/₃₀	¹/₁₁	¹/₂	2×	9×

† possible mismatch - one-core program compared to multi-core program.

± read the measurements and then read the program source code.

3 : Are the Clojure programs faster? Measurements.

These are not the only tasks that could be solved. These are just 10 tiny examples. These are not the only compilers and interpreters. These are not the only programs that could be written.

For each named benchmark, measurements of the fastest Clojure program are shown for comparison against measurements of the fastest Python 3 program.

Program Source Code	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
spectral-norm
Clojure	18.75	5.51	58,160	808	85% 89% 86% 81%
Python 3	804.62	202.54	39,668	437	99% 99% 100% 99%
n-body
Clojure	27.20	26.16	50,688	2162	97% 2% 2% 4%
Python 3	934.69	935.01	6,292	1181	8% 74% 18% 0%
mandelbrot
Clojure	54.31	14.68	95,556	1069	96% 91% 92% 92%
Python 3	1,779.60	446.24	180,408	777	100% 100% 100% 100%
fasta
Clojure	11.91	10.59	63,312	1839	6% 68% 33% 6%
Python 3	219.23	222.96	6,208	788	31% 26% 3% 41%
fannkuch-redux
Clojure	156.20	48.96	55,216	1088	80% 79% 77% 79%
Python 3	3,556.66	900.60	36,288	797	99% 100% 97% 99%
binary-trees
Clojure	25.95	18.33	531,756	705	71% 15% 15% 43%
Python 3	539.48	142.51	1,209,460	626	93% 95% 98% 93%
k-nucleotide
Clojure	111.62	34.80	1,006,640	3030	84% 74% 84% 80%
Python 3	384.41	129.56	451,488	647	60% 98% 58% 81%
reverse-complement
Clojure	4.63	3.49	336,664	1044	28% 80% 9% 17% †
Python 3	5.37	5.38	679,776	325	0% 0% 100% 0% †
regex-dna
Clojure	49.73	25.08	554,628	710	44% 32% 40% 82%
Python 3	26.34	12.88	255,724	478	41% 33% 99% 32%
pidigits
Clojure	25.93	21.19	86,184	571	40% 10% 29% 42% †
Python 3	2.40	2.40	6,972	255	0% 0% 100% 1% †
fasta-redux
Clojure	2.63	1.42	52,188	1503	32% 70% 45% 39%
	No program