On 05/07/2009 05:59 PM, Michael Rubinsky wrote:
Quoting [email protected]:
Zitat von Michael Rubinsky <[email protected]>:
Quoting Matus UHLAR - fantomas <[email protected]>:
On 11.04.09 18:08, Harry Rickards wrote:
I'm trying to reduce the amount of memory Apache uses on my Debian
stable/lenny VPS. The modules mod_env and mod_setenvif are currently
enabled, and I wondered whether it's safe to disable them? All I use
Apache for is Horde and Wordpress (and a few static HTML pages),
and my
Horde version is 3.3.3 and IMP 4.3.3.
I'm afraid that when using horde, it's irelevant to tune apache/php
settings. It's horde what's eating most of memory.--
That's not entirely true. Do you have any data to back that up?
FWIW, I've found using Lighttpd instead of Apache a great solution
for reducing memory usage. I've been using it exclusively for a few
years now. There is a what I would call a tiny learning curve in
initially setting it up, depending on how many custom rewrite rules
you already have in place (as the syntax and abilities are not 1:1).
Is there any documentation on using Lighttpd for Horde maybe with some
Performance Numbers etc.??
I once tried to use it but get stuck with some required PHP modules
and because lack of time :-(
Using lighttpd with Horde doesn't require any extra or special PHP
modules then using PHP with Apache does. The only difference is you need
to run a fastcgi PHP instead of as a module (mod_php). I don't have any
hard performance numbers personally, other then the fact that when I was
hosting my personal Horde install in a Virtuozzo VPS with no swap space,
Horde was just about unusable with the amount of memory available to my
VPS. Switching to lighttpd allowed it to work without any issues running
with 256MB for the entire server, which ran the whole stack (mySQL,
Postfix, Dovecot, etc...).
The syntax for rewrite rules are different, but over time, I've added
most of the lighttpd style rules to Horde. If you have any specific
questions, feel free to ask.
There are lots of good HowTos on setting up php fast-cgi with lightty
around the net, and the documentation on the lighttpd site is pretty good.
For starters,
http://redmine.lighttpd.net/wiki/lighttpd/TutorialLighttpdAndPHP
I just switched to nginx from Apache 1.3.41 and the load on the server
went down noticeably and IMP responsiveness is much better. Have a look
at this graph for some visual evidence. Switched to nginx early
Wednesday morning.
http://support.ednet.ns.ca/images/dijon-load-week.png
Thanks,
mike
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