ruby python perl算阶乘性能比较

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最近在看jruby的一些书,讲到jruby是用纯java写的一个ruby解释器,于是想测试一下它的性能到底如何

顺便比较一下几种主流的脚本语言的性能

测试算法如下:

ruby:

#!/usr/bin/ruby -wx=10000fact=1i=1while x >= i   fact*=i   i+=1endputs fact

python:

#!/usr/bin/env python import sysx=10000fact=1i=1while (x >= i):  fact*=i  i+=1print fact

perl:

#!/usr/bin/perl -w use strict;my $x = 10000;my $fact = 1;my $i = 1;while ( $x >= $i ) {    $fact *= $i;    $i++;}print "$fact \n";

是用ruby的benchmark库

#!/usr/bin/ruby -w#require 'benchmark'Benchmark.bmbm do |b|  b.report("ruby") { system("ruby test.rb >/dev/null")}  b.report("python") { system("python test.py >/dev/null")  b.report("perl") { system("perl test.pl >/dev/null")}end

结果如下:

使用的ruby解释器:

ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]

Rehearsal ------------------------------------------
ruby 0.000000 0.000000 0.560000 ( 0.546213)
python 0.000000 0.000000 2.010000 ( 2.004604)
perl 0.000000 0.000000 0.020000 ( 0.007585)
--------------------------------- total: 2.590000sec

user system total real
ruby 0.000000 0.000000 0.510000 ( 0.493759)
python 0.000000 0.000000 0.840000 ( 0.823598)
perl 0.000000 0.000000 0.020000 ( 0.009535)

使用ruby解释器:

jruby 1.5.6 (ruby 1.8.7 patchlevel 249) (2011-10-27 6586) (OpenJDK 64-Bit Server VM 1.6.0_24) [amd64-java]

Rehearsal ------------------------------------------
ruby 0.000000 0.000000 1.840000 ( 1.508107)
python 0.000000 0.000000 0.790000 ( 0.778767)
perl 0.000000 0.000000 0.020000 ( 0.009619)
--------------------------------- total: 2.650000sec

user system total real
ruby 0.000000 0.000000 1.730000 ( 1.422961)
python 0.000000 0.000000 0.950000 ( 0.934636)
perl 0.000000 0.000000 0.020000 ( 0.008203)

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