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 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 program.

(Memory use is only compared for tasks that require memory to be allocated.)


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 program.

(Memory use is only compared for tasks that require memory to be allocated.)

 Clojure used what fraction? used how many times more? 
Benchmark Time Memory Code
 k-nucleotide±1/2
 regex-dna±±
 binary-trees±±±
 n-body± 
 fannkuch-redux± ±
 spectral-norm± ±
 fasta †± ±
 mandelbrot± 
 pidigits †± 
 reverse-complement1/2
 fasta-redux † ±
 Clojure used what fraction? used how many times more? 
Time-used  |-  |---  25% median  75%  ---|  -|
(Elapsed secs)±±±±±

† 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 Java program.

Program Source Code CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
 k-nucleotide 
Clojure24.8610.20241,9602723  48% 98% 26% 73%
Java44.8512.81504,3121602  93% 86% 87% 84%
 regex-dna 
Clojure5.532.21136,216707  96% 52% 53% 52%
Java5.472.6189,672929  48% 39% 38% 87%
 binary-trees 
Clojure50.5615.08572,800750  88% 82% 85% 82%
Java24.8914.48390,708584  34% 73% 38% 30%
 n-body 
Clojure27.8726.6162,6242162  99% 2% 3% 2%
Java22.9022.8719,5721424  99% 1% 1% 1%
 fannkuch-redux 
Clojure82.0121.3359,1761491  99% 95% 96% 96%
Java70.0617.7319,7201282  99% 99% 98% 99%
 spectral-norm 
Clojure18.765.5364,384808  83% 81% 81% 95%
Java17.804.5921,132950  97% 96% 99% 96%
 fasta 
Clojure7.996.5767,4001653  88% 5% 10% 20% †
Java5.375.2820,6681507  1% 70% 1% 31% †
 mandelbrot 
Clojure32.128.94144,4241195  88% 96% 86% 91%
Java27.847.1162,344796  98% 97% 98% 100%
 pidigits 
Clojure5.574.2477,4681944  28% 62% 29% 15% †
Java3.173.0323,504938  19% 80% 5% 3% †
 reverse-complement 
Clojure4.382.86571,340727  44% 30% 64% 19%
Java2.971.47300,7121661  47% 37% 78% 43%
 fasta-redux 
Clojure6.605.2769,3081428  8% 97% 12% 11% †
Java2.632.5819,9601443  77% 1% 24% 2% †

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

 4 : Are there other Clojure programs for these benchmarks?

Remember - those are just the fastest Clojure and Java programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for Clojure.

Maybe one of those other Clojure programs is fastest on a different OS/machine.

 5 : Are there other faster programs for these benchmarks?

Remember - those are just the fastest Clojure and Java programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.

Maybe one of those other programs is fastest on a different OS/machine.

 Clojure :  

java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)

Clojure 1.6

Clojure benchmarks

Home Page: http://clojure.org/

Download: http://clojure.org/downloads

Revised BSD license

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