Clojure vs Java 7 | 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 Java 7 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 Java 7 program.

Clojure used what fraction? used how many times more?
Benchmark	Time	Memory	Code
n-body	±	3×	2×
spectral-norm	±	3×	±
binary-trees	2×	±	±
fasta	2×	3×	±
mandelbrot	2×	±	±
k-nucleotide	3×	2×	2×
reverse-complement	3×	±	¹/₂
regex-dna	3×	±	±
fasta-redux	4×	3×	±
fannkuch-redux	4×	3×	±
pidigits	5×	±	¹/₃

Clojure used what fraction? used how many times more?
Time-used	\|-	\|---	25%	median	75%	---\|	-\|
(Elapsed secs)	±	±	2×	3×	3×	5×	5×

± 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 Java 7 program.

Program Source Code	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
n-body
Clojure	27.20	26.16	50,688	2162	97% 2% 2% 4%
Java 7	22.51	22.50	17,256	1424	0% 0% 100% 0%
spectral-norm
Clojure	18.75	5.51	58,160	808	85% 89% 86% 81%
Java 7	17.61	4.51	17,540	950	97% 97% 99% 98%
binary-trees
Clojure	25.95	18.33	531,756	705	71% 15% 15% 43%
Java 7	22.31	9.24	523,784	1007	37% 65% 58% 83%
fasta
Clojure	11.91	10.59	63,312	1839	6% 68% 33% 6%
Java 7	5.21	5.14	18,284	1507	0% 1% 1% 100%
mandelbrot
Clojure	54.31	14.68	95,556	1069	96% 91% 92% 92%
Java 7	27.82	7.07	69,460	796	99% 98% 99% 98%
k-nucleotide
Clojure	111.62	34.80	1,006,640	3030	84% 74% 84% 80%
Java 7	46.39	13.25	450,972	1630	86% 84% 96% 85%
reverse-complement
Clojure	4.63	3.49	336,664	1044	28% 80% 9% 17%
Java 7	2.79	1.31	298,404	1661	61% 77% 40% 39%
regex-dna
Clojure	49.73	25.08	554,628	710	44% 32% 40% 82%
Java 7	24.82	8.55	709,672	929	65% 82% 65% 79%
fasta-redux
Clojure	10.89	9.27	54,884	1503	6% 97% 8% 7%
Java 7	2.56	2.52	17,308	1443	0% 1% 1% 100%
fannkuch-redux
Clojure	156.20	48.96	55,216	1088	80% 79% 77% 79%
Java 7	51.90	13.15	17,348	1282	99% 99% 98% 98%
pidigits
Clojure	25.93	21.19	86,184	571	40% 10% 29% 42%
Java 7	10.20	4.29	60,520	1808	68% 62% 65% 45%