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- all benchmarks - binary-trees chameneos-redux fannkuch fasta k-nucleotide mandelbrot meteor-contest n-body pidigits regex-dna reverse-complement spectral-norm thread-ring - all languages - Ada 2005 GNAT ATS C GNU gcc C# Mono C++ GNU g++ Erlang HiPE F# Mono Fortran Intel Go 6g 8g Haskell GHC Java 6 -server Java 6 -Xint Java 6 steady state Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Python CPython Ruby JRuby Scala

÷ Ada 2005 GNAT ATS C GNU gcc C# Mono C++ GNU g++ Erlang HiPE F# Mono Fortran Intel Go 6g 8g Haskell GHC Java 6 -server Java 6 -Xint Java 6 steady state Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Python CPython Ruby JRuby Scala

 Step 1 : Are the Python CPython programs faster? At a glance.

This chart shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.

Each chart bar shows, for one unidentified benchmark, how much the fastest Python CPython program used compared to the fastest Java 6 -server program.

 Step 2 : Are the Python CPython programs faster? Approximately.

This table shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.

Each table row shows, for one named benchmark, how much the fastest Python CPython program used compared to the fastest Java 6 -server program.

Python CPython used what fraction? used how many times more?
Benchmark	Time	Memory	Code
pidigits	±	1/67	1/2
regex-dna	±	1/4	1/3
reverse-complement	2×	±	1/2
k-nucleotide	6×	±	1/3
binary-trees	24×	±	±
fasta	27×	1/4	1/2
chameneos-redux	31×	1/4	1/2
spectral-norm	60×	2×	1/2
n-body	61×	1/4	±
mandelbrot	62×	1/2	1/2
fannkuch	180×	1/5	1/3

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

 Step 3 : Are the Python CPython programs faster? Measurements.

This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ≈ CPU Load ~ speed and size.

For each named benchmark, measurements of the fastest Python CPython program are shown for comparison against measurements of the fastest Java 6 -server program.

Program Source Code	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
pidigits
Python CPython	54.74	54.74	3,596	407	100% 0% 0% 0%
Java 6 -server	59.18	58.03	240,912	800	34% 23% 31% 14%
regex-dna
Python CPython	11.73	11.73	196,492	314	0% 0% 100% 0%
Java 6 -server	29.50	11.81	694,708	929	87% 54% 54% 55%
reverse-complement
Python CPython	6.78	6.78	561,860	288	0% 40% 61% 0%
Java 6 -server	3.38	3.32	473,716	592	0% 2% 1% 98%
k-nucleotide
Python CPython	277.72	84.94	441,680	519	54% 94% 82% 96%
Java 6 -server	46.28	13.60	476,316	1602	86% 92% 81% 81%
binary-trees
Python CPython	980.23	279.06	674,024	626	86% 89% 85% 90%
Java 6 -server	14.13	11.68	460,636	603	28% 24% 55% 14%
fasta
Python CPython	208.55	208.54	2,928	779	61% 23% 4% 12%
Java 6 -server	7.75	7.72	12,808	1240	1% 100% 0% 1%
chameneos-redux
Python CPython	237.86	180.72	3,024	869	43% 32% 29% 27%
Java 6 -server	13.67	5.82	12,952	1377	59% 50% 54% 60%
spectral-norm
Python CPython	942.71	242.94	23,632	428	98% 97% 98% 95%
Java 6 -server	15.93	4.07	12,736	950	97% 100% 98% 97%
n-body
Python CPython	1,443.10	1,443.02	2,932	1105	86% 7% 1% 7%
Java 6 -server	23.70	23.74	12,608	1424	0% 100% 0% 0%
mandelbrot
Python CPython	2,882.02	720.54	23,468	425	100% 100% 100% 100%
Java 6 -server	45.21	11.54	44,768	903	98% 98% 98% 99%
fannkuch
Python CPython	3,232.09	3,231.90	2,852	387	36% 8% 48% 7%
Java 6 -server	65.43	17.94	13,940	1150	99% 99% 99% 68%

 Step 4 : Are there other Python CPython programs for these benchmarks?

Remember - those are just the fastest Python CPython and Java 6 -server programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for Python CPython.

Ada 2005 GNAT ATS C GNU gcc C# Mono C++ GNU g++ Erlang HiPE F# Mono Fortran Intel Go 6g 8g Haskell GHC Java 6 -server Java 6 -Xint Java 6 steady state Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Python CPython Ruby JRuby Scala

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

 Step 5 : Are there other faster programs for these benchmarks?

Remember - those are just the fastest Python CPython and Java 6 -server programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.

binary-trees chameneos-redux fannkuch fasta k-nucleotide mandelbrot meteor-contest n-body pidigits regex-dna reverse-complement spectral-norm thread-ring

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

 Python CPython : uncluttered imperative programming plus objects 

Python 2.6.4 (r264:75706, Dec 7 2009, 18:45:15)
[GCC 4.4.1] on linux2

Online book: Dive Into Python

Home Page: http://www.python.org/

Download: http://www.python.org/download/

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