MailScanner and RHEL 3

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>From: Trever Furnish <TGFurnish at HERFFJONES.COM>
>Reply-To: MailScanner mailing list <MAILSCANNER at JISCMAIL.AC.UK>
>To: MAILSCANNER at JISCMAIL.AC.UK
>Subject: Re: MailScanner and RHEL 3
>Date: Fri, 25 Jun 2004 12:34:10 -0500
>
> > -----Original Message-----
> > From: Chris Conn [mailto:cconn at ABACOM.COM]
> > Sent: Friday, June 25, 2004 11:06 AM
> > To: MAILSCANNER at JISCMAIL.AC.UK
> > Subject: Re: MailScanner and RHEL 3
> >
> > We have several RHEL3 systems running MailScanner, SpamAssassin and
> > Clamav and none of those systems have even _touched_ the
> > swap.  Some of
> > these systems handle up to 200,000 messages per day, sometimes more
> > depending on the usual spam load =)  Load averages are consistently
> > below 0.5 and hover around 0.2, and these systems are configured with
> > 2GB of RAM.
> >
> > We have stuck to RH kernels, the only thing we may have done
> > differently
> > is rebuild all of the RPMs for the various utilities (SpamAssassin and
> > clamav in particular) using rpmbuild instead of installing
> > the pre-built
> > rpms.  The rest is RedHat stock.
>
>Hmmm...  Much lower load here - not using any antivirus stuff, handling 
>only
>about 45,000 messages per day (although our messages tend to be much larger
>than typical sites').  Not using an RPM at all for spamassassin, compiled
>from source tarball.  But we still have an issue with swapping if I turn on
>swap.
>
>I have noticed that the spf-milter perl script seems to leak memory, so I
>already restart it frequently - otherwise it eventually consumes all the
>memory.  But I'm pretty sure that was never the only cause of this issue.
>
I have a Dell 1750 with Dual 2.4 GHz processors and 1 GB of RAM using kernel 
2.4.21-9.0.3.ELsmp with the kernel-unsupported modules for ReiserFS.  I use 
MailWatch, so I used RPMS for httpd, mysqld, and php.  I also installed all 
necessary perl modules from RPM.  ClamAV, Spamassassin and Postfix were all 
installed from source.  MailScanner was installed using install.sh.  I'm 
only handling 5-6K messages a day.  From a fresh reboot, the server will 
start swapping within a week and severely degrade performance after 2-4 
weeks.  Looking at the memory usage under top, MailScanner is using 50 MB * 
5 processes, and one process is using 15 MB.  After that, everything is 
utilizing ~1% or lower.

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