From: David Heinemeier Hansson <david@...>
Date: 2005-01-12T07:14:41+09:00
Subject: Re: mod_ruby & rails doc?

> Using the mod_ruby gives web application more bags of tools that comes 
> with Apache, just like the mod_php. And also, it is easier to manage 
> since it is integrated with Apache.
>
> Some have claimed that FastCGI is faster than mod_ruby, can anyone 
> validate these claims? Because I can hardly believe that CGI is faster 
> than the embedded interpreter.

mod_ruby uses one interpreter per Apache process, which means that apps 
walk all over each other in the namespaces. At least for Rails, that's 
not acceptable, so it's 1 app per Apache setup if you want mod_ruby.

FCGI is a much better setup for Rails. You don't fill up a ton of 
Apache processes with your app (so apache processes serving static 
files and images stay small) and you can have as many apps per apache 
setup as you'd like.

I've found FCGI to be 10-15% faster in my tests with Rails.
--
David Heinemeier Hansson,
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