James Wilson wrote: > Since upgrading to 5.3 we have noticed that overnight all 4GB of > physical RAM and all 4GB of swap is eaten and the web service > unresponsive. We can still SSH into the machine and restart Apache. > This rectifies the issue. These are production boxes and subject to > numerous connections, we are trying to isolate the trigger. However, > the exact same configuration and applications being served under 5.2 > exhibit no issue. > > I suspect it may be related to this bug, logged with the upstream: > > https://bugzilla.redhat.com/show_bug.cgi?id=497077 I was experiencing similar problems with an x86_64 server after upgrading to 5.3. While MySQL, Apache and PHP are installed SquirrelMail was not, nor mail services beyond daily logwatch emails. Since Apache was serving internal-only sites needed by only a few people in my department, I found that de-tuning the prefork section httpd.conf was an acceptable workaround. None of the other servers I have upgraded to 5.3 have exhibited this issue, but they are all i386 web servers only and do not mysql installed. Although they do handle 2-3 orders of magnitude more requests than the x86_64 server does. Thanks, Rick