From: Reid Thompson <reid.thompson@...>
Date: 2007-09-21T09:13:41+09:00
Subject: Re: How fast does your Ruby run?

SpringFlowers AutumnMoon wrote:
> How fast does your Ruby run?
> 
> I got 53648 iterations per second running the following program,
> on an Intel 3.2 GHz HT, Win XP machine:
> 
> --------
> 
> C:\> ruby calculate.rb
> 55
> 
> Ruby 1.8.6 patch 0 on i386-mswin32
> It took 18.64 seconds to run. 53648 iterations per second.
> 
> --------
> 
> n = 1_000_000
> 
> start_time = Time.now
> 
> for i in 1..n
>   t = (1..10).inject {|x, y| x + y }
> end
> 
> finish_time = Time.now
> 
> p t
> 
> puts
> print "Ruby ", RUBY_VERSION, " patch ", RUBY_PATCHLEVEL, " on ",
> RUBY_PLATFORM
> 
> puts
> print "It took #{finish_time - start_time} seconds to run."
> print " #{(n / (finish_time - start_time)).to_i} iterations per
> second.\n"

amd athlon 2500+XP processor (1883 MHz) 1GB ram

-------------cygwin ruby 1.8.6----------
ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-cygwin]
yes, that's on cygwin.
$ ruby howquick.rb
55

Ruby 1.8.6 patch 0 on i386-cygwin
It took 15.816 seconds to run. 63227 iterations per
second.


-------------native ruby same box 1.8.5----------
C:\ruby\bin>ruby c:\cygwin\home\rthompso\howquick.rb
55

c:/cygwin/home/rthompso/howquick.rb:14: uninitialized constant 
RUBY_PATCHLEVEL (
NameError)
removed pathlevel ..
C:\ruby\bin>ruby c:\cygwin\home\rthompso\howquick.rb
55

Ruby 1.8.5 on i386-mswin32
It took 30.782 seconds to run. 32486 iterations per
second.

-------------native ruby same box updated to 1.8.6----------
C:\ruby\bin>ruby c:\cygwin\home\rthompso\howquick.rb
55

Ruby 1.8.6 patch 0 on i386-mswin32
It took 24.453 seconds to run. 40894 iterations per
second.

------------ruby 1.8.5 linux core2 duo gentoo 2gb RAM-------
rthompso@raker ~ $ ruby howquick.rb
55

Ruby 1.8.5 patch 2 on i686-linux
It took 11.779449 seconds to run. 84893 iterations per
second.

------------updated ruby 1.8.6 same linux core2 duo 2gb RAM---

rthompso@raker ~ $ ruby howquick.rb
55

Ruby 1.8.6 patch 36 on i686-linux
It took 9.702104 seconds to run. 103070 iterations per
second.