Re: Apache waiting for i/o -> optimizing

[Bj <bjkhanz@xxxxxxxxx>]

Stop logging !
of maybe filter what you're logging (static ressources,...)

For exemple, this will prevent logging ressource calls begining with /_javascript_/ urls :
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
SetEnvIf Request_URI "^/_javascript_/.*$" jscript
CustomLog logs/access_log combined env=!jscript

You can try memory caching, if somes sites are more requested than others, it might help. Or cache only some urls.
 
Check if you don't have a database or cgi/php code that make lots of i/o.

-- 
Bj

On 9/18/07, Samuel Vogel < samy-delux@xxxxxx> wrote:

Hey,

The delivery of my sites is getting somewhat sluggish, so I checked top
and it say that 30% of my CPU time is just waiting for i/o.
Is there anything that I can do about this, as in optimizing Apache?
I'm thinking about caching mechnisms, but I have now over 6.000 sites
running, so I'm not expecting caching to be useful. Am I wrong on this?

Since getting an addional server is not possible right now, is there any
way to ease the situation?

Regards,
Samy

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