[rt-users] RT memory usage

chaim.rieger at gmail.com chaim.rieger at gmail.com
Thu Jul 10 03:07:02 EDT 2008

Strip apache of as many modules you can
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-----Original Message-----
From: Karel Vervaeke <karel at outerthought.org>

Date: Thu, 10 Jul 2008 08:21:14 
To: <rt-users at lists.bestpractical.com>
Cc: all all<all at outerthought.org>
Subject: [rt-users] RT memory usage

Dear list, we are running RT on a xen virtual machine running Debian
etch (4.0), Linux rt.outernet 2.6.18-4-xen-686 #1 SMP Thu May 10
03:24:35 UTC 2007 i686 GNU/Linux

the VM had 256M RAM and a default apache installation. Versions of
apache and RT packages:
ii apache2                2.2.3-4+etch4  Next generation, scalable,
extendable web server
ii  apache2-mpm-worker     2.2.3-4+etch4  High speed threaded model for
Apache HTTPD 2.1
ii  apache2-utils          2.2.3-4+etch4  utility programs for
ii  apache2.2-common       2.2.3-4+etch4  Next generation, scalable,
extendable web server
ii  rt3.6-apache2  3.6.4-1        Apache 2 specific files for
ii  rt3.6-clients  3.6.4-1        Mail gateway and command-line ii 

Because of out of memory problems we:
* increased memory to 512M
* limited the number of apache processes to 3 (including the root-owned
* ran apt-get upgrade libdbix-searchbuilder-perl (it went from 1.49 to

Now, after a reboot, 320 MB is free. After a couple of small browsing
sessions free memory stabilizes around 130 MB. One day later it is still
80 MB, but I have a feeling where this is going.

Are there more suggestions you can give me to make RT / apache2 eating
all the memory?


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