Re: [gentoo-dev] Performance Apache/PHP / PHP-Problem

[Robin H.Johnson <robbat2@gentoo.org>]

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On Wed, Apr 16, 2003 at 10:57:09AM +0200, Benjamin Podszun wrote:
> I posted my Apache problems before and I think I found the root cause
> now. I have a nntp2web-gateway as forum and the nntp-server regularly
> reaches a high load because of some other applications.
> The server still accepts connections, but feeds more or less a "wait a
> moment" to my webserver..

> First problem for me: Gentoo's mod_php isn't build with
> --enable-memory-limit. I needed that to solve some of my performance
> problems and I think it should be used by default, since one can set the
> limit in the php.ini.
Ok, I'll at this in shortly.

> Second problem: I seem to miss something here.. My php-scripts won't
> stop receiving data in spite of my self-made memory-limit-aware mod_php.
> I get funny thinks like this with apachectl fullstatus:
>  Srv PID Acc M CPU SS Req Conn Child Slot Client VHost Request
>    0-0 24732 0/9710/9710 W 255.39 48435 0 0.0 12.94 12.94 217.82.173.211
>    galactic-tales.4players.de GET /nntp2web/thread.php?group=rpg
> HTTP/1.1
You have misread the columns.

Align the columns better or look at the web version "http://localhost/server-status" in a table capable browser.
Srv     PID     Acc         M   CPU     SS      Req     Conn    Child   Slot    Client          VHost   ...
0-0     24732   0/9710/9710 W   255.39  48435   0       0.0     12.94   12.94   217.82.173.211  galactic-tales.4players.de ...

The ~50 you see is NOT the size, it's the time in seconds since the last
request. The 'W' shows that the request is still open, so that IS a
serious issue. I would turn off keepalives + persistant connections in
apache/php totally. There is minimal performance gain with them in PHP
anyway. The '12.94Mb' for the Child column is how much that Apache child
process has transfered over its lifetime.
9170 connections and 12.94Mb is quite low traffic.

-- 
Robin Hugh Johnson
E-Mail     : robbat2@orbis-terrarum.net
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