From: Brian Adkins <lojicdotcomNOSPAM@...>
Date: 2007-03-08T14:30:07+09:00
Subject: Re: High ActiveRecord CPU Utilization

M. Edward (Ed) Borasky wrote:
> Brian Adkins wrote:
>> M. Edward (Ed) Borasky wrote:
>>> 1. What's your platform, and what version of Ruby are you running?
>>
>> $ ruby -v
>> ruby 1.8.4 (2005-12-24) [i486-linux]
> A couple of suggestions here:
> 
> 1. Download the latest Ruby source -- 1.8.6 pre something.
> 2. Compile it for your architecture -- set CFLAGS = "-O2 -march=xxx"
> 
>     where "xxx" is your architecture -- it's an AMD64 of some kind, right?
> 
>     If you're running a 64-bit system, make sure you have a recent 
> 64-bit kernel and GCC 4.1 -- older compilers suck wet dog fur on the 64 
> bit machines.
> 
> That should get you somewhere in the 10 - 30 percent speed improvement 
> over a 486-compiled Ruby 1.8.4. It might be more, but just doing the 
> 1.8.6 and the -O2 / march= stuff is pretty much mandatory.

Interesting. Do you mind if I ask where you got the 10 to 30% figure? 
Stability is more important to me than raw speed, so I'd prefer to not 
use anything newer than Ruby 1.8.5-p12.

I'm running a 32 bit kernel because 64 bit was, let's say, problematic. 
My gcc is 4.1.2.