> > However, it raises some additional questions. Would much 
> > of that tuning be CF-specific?
> 
> Well yes and no. A good bit of it could be applied to general 
> web serving. However, understanding the basic architecture 
> behind ColdFusion allows you to get a little more specific. 
> In fact, I was able to obtain a patch from a kernel hacker 
> that really affected CF's performance, but didn't have any 
> effect on Apache or the rest of the system.

There's web serving in general, and CGI applications in particular. I've
seen relatively significant differences between tuning settings for static
web serving and CGI applications. My question (and it may take me a couple
of tries to get the question exactly right, I suppose) is, would that patch
have benefited a similarly written mod_perl application in the same way, or
would there be significant differences between the two?

> At a certain point it is useless to continue to tune the 
> machine. With today's prices on hardware, you can't really 
> justify spending more than two days on tuning.

I fully agree with that, which is why I've been as happy with the
Allaire-derived tuning methodology I've used. It may be guilty of
oversimplification in some respects, as you've pointed out, but in general,
it's given me good results in a very short time.

Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/
voice: (202) 797-5496
fax: (202) 797-5444

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