MailScanner & Hyper threading

[Martin Hepworth]

David

I'd try.....turning off the RBL tests and then applying back on at a
time (this was an issue for me an caused quite a lot of timeouts).

I presume you're running the RBL in SA and not MS?

Also try running in debug mode for both MS and SA and see if there's
anything obvious.

try running the --lint -D as the mailscanner user, not root - if not
done already.

try reducing the number of children...max number of messages processed.

are you seeing SA/other timeouts on the maillog?

have you tried running bonnie++ to get a better of the disk I/O?

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


David Hooton wrote:
>>-----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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