From: Ryan Davis <ryand-ruby@...>
Date: 2009-04-30T08:05:26+09:00
Subject: Re: Weird performance issue


On Apr 27, 2009, at 21:20 , court3nay wrote:

> I ran a profile, too.

looking at your profile on fast and slow shows a ton of differences.  
If I ignore the times completely I find this very interesting cluster  
at 14 calls on your slow run: http://pastie.org/463189.txt

Basically, it looks like you're not loading any gems on the fast side  
at all, despite having roughly the same number of requires. You don't  
have any calls to gem_original_require on the fast side for example.  
At this point I suspect the fast side is more incorrect than the slow  
side, but I dunno.

So, look at `gem env` on both sides, look at `env | egrep "GEM|RUBY"`.  
Compare the two and see if you find anything... I think the  
suggestions to look at the system with dtrace and the like are going  
way too deep way too fast. It's like trying to drink from a firehose.