From: "geoffness8@..." <geoffness8@...>
Date: 2007-09-21T18:15:05+09:00
Subject: Re: How fast does your Ruby run?

On Sep 21, 10:49 am, SpringFlowers AutumnMoon
<summercooln...@gmail.com> 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"
> --
> Posted viahttp://www.ruby-forum.com/.


AMD  2.8 GHz  Ubuntu 7.04 2 GB RAM
geoff@geoff-laptop:~/prog/ruby$ ruby calculate.rb
55

Ruby 1.8.6 patch 0 on i686-linux
It took 13.012441 seconds to run. 76849 iterations per
second.

And then with the addition of
x, y = nil

geoff@geoff-laptop:~/prog/ruby$ ruby calculate.rb
55

Ruby 1.8.6 patch 0 on i686-linux
It took 12.135616 seconds to run. 82402 iterations per
second.