MailScanner can't keep up

[Martin Hepworth]

I'd second what Julian says - you're short on RAM. Vmstat will show this.

Also depends on what spamassassin rules etc you have, the more SA checks the
more memory required.

There's some really huge SA rules that you may have downloaded in the past
that are no longer needed with the URI RBL's.

--
Martin Hepworth 
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Julian Field
> Sent: 22 February 2006 18:57
> To: MailScanner discussion
> Subject: Re: MailScanner can't keep up
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Drew Burchett wrote:
> > I have MailScanner 4.5 set up on Suse Linux 10.0 use
> > Postfix 2.2.3 as an MTA.  Messages are being received
> > fine, but MailScanner is choking on the volume trying
> > to process them.  According to MailWatch, I am
> > averaging receiving 700 messages per hour to be
> > scanned (tons more are being delivered, but filtered
> > by Postfix).  On average, MailScanner is reporting
> > taking about 900 seconds per 15 message batch.  I have
> > it limited to 10 child processes.  The server it is
> > running on is a 3.0 Ghz with 512 Mb memory and a 40Gig
> > SCSI hard drive divided into three partitions.  If you
> > need any other informaiton to help me diagnose this
> > problem, please let me know and I'll be glad to post it.
> >
> Add more RAM. With 10 child processes (I would advise 5 per CPU) you
> will need 2Gb of RAM. I bet that "vmstat 5" reports it is swapping like
> crazy (look for the si and sout figures). My advice is 5 children and
> 1GB RAM per CPU. Hyper-threaded processes still count as 1.
> 
> RAM is cheap, go buy a shed load more.
> 
> - --
> Julian Field
> www.MailScanner.info
> Buy the MailScanner book at www.MailScanner.info/store
> Professional Support Services at www.MailScanner.biz
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> 
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> 
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> 
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