php-cgi memory usage higher than php's memory limit

Posted by Josh Nankin on Server Fault See other posts from Server Fault or by Josh Nankin
Published on 2010-12-23T22:48:37Z Indexed on 2010/12/23 22:55 UTC
Read the original article Hit count: 813

Filed under:

apache

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php

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apache2

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php-cgi

I'm running apache with a worker MPM and php with fastcgi.

the following are my mpm limits:

StartServers 5 MinSpareThreads 5 MaxSpareThreads 10 ThreadLimit 64 ThreadsPerChild 10 MaxClients 10 MaxRequestsPerChild 2000

I've also setup my php-cgi with the following: PHP_FCGI_CHILDREN=5 PHP_FCGI_MAX_REQUESTS=500

I'm noticing that my average php-cgi process is using around 200+mb of RAM, even as soon as they are started. However, my php memory_limit is only 128M.

How is this possible, and what can I do to lower the php-cgi memory consumption?

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