From: Sam Roberts <sroberts@...>
Date: 2006-05-23T05:36:44+09:00
Subject: Re: Zed and Luis drop the bomb on Ruby's poor performance

Quoting SimonKroeger@gmx.de, on Tue, May 23, 2006 at 05:12:14AM +0900:
> Hi Sam!

Hi Simon,

> Conclusion: method calls in general and object creation are the
> bottlenecks in this (very, very) simple cases.

My conclusion as well.

My real app basically runs over all the lines in a set of files using
IO#each, runs a regex, turns the matched strings into objects, so is
pretty much dominated by these simple cases (I think, and profile
suggests).

Your !-optimizations are interesting. I'll look back at my low-level
code. Maybe by changing my "name = $2.upcase" statements to "name = $2;
name.upcase!" I can get some good speedups. Depends on whether I need to
keep both versions around, I'll have to construct some test cases and
profile them.

Thanks,
Sam