From: "M. Edward (Ed) Borasky" <znmeb@...>
Date: 2007-09-21T23:13:15+09:00
Subject: Re: How fast does your Ruby run?

Josip Gracin wrote:
> 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:
> 
> Here's something interesting.  The processor is Intel T7200 @ 2.00GHz,
> Linux Ubuntu.
> 
> 1. With ruby 1.8.5. which comes packaged with Ubuntu:
> 
>    Ruby 1.8.5 on i486-linux
>    It took 20.346013 seconds to run. 49149 iterations per
>    second.
> 
> 2. With ruby 1.9.0 (2006-06-08) which comes packaged in Ubuntu:
> 
>    Ruby 1.9.0 on i486-linux
>    It took 23.875774 seconds to run. 41883 iterations per
>    second.
> 
> 
> 3. With ruby 1.8.6 compiled from sources on the machine:
> 
>    Ruby 1.8.6 on i686-linux
>    It took 7.107875 seconds to run. 140689 iterations per
>    second.
> 
> 
> Obviously, the target instruction set matters quite a lot.  I think I'll
> be compiling my own ruby from now on. :-)

Make sure you use the appropriate "march=" flag when you do. See
http://www.jhaampe.org/software/ruby-gcc for the details.