MailScanner & Hyper threading

[David Hooton]

> -----Original Message-----
> From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
> Behalf Of Jan-Peter Koopmann
> Sent: Thursday, 13 May 2004 12:35 AM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Re: MailScanner & Hyper threading
>
> On Wednesday, May 12, 2004 4:14 PM pn1013
> <mailto:david at PLATFORMHOSTING.COM> wrote:
>
> > We have a MailScanner box which seems to be cursed, it's a
> > hyper threading Pentium 4 processor box with 1 gig of ram and
> > 7200RPM disks.  The problem we're seeing is that it doesn't
> > seem to be able to process much more than 5000 messages per
> > day without having huge backlogs on the inbound queue
> > regardless of what we do.
>
> How is the load of the machine? Have you had a look at IO statistics?
> Could this be a DNS issue?

Doesn't appear to be DNS related, --lint etc show no timeouts or errors.  It
also doesn't look like a disk IO issue, hdparm tests seem to show pretty
reasonable throughput.

The machine hits a load of about 3 and starts backing up messages up until a
load of 5 at which time it pretty much stops being useful.

Regards,

David Hooton
Senior Partner
Platform Networks
www.platformnetworks.net


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