Major Load please help

[Ugo Bellavance]

Vicchiullo, Rob wrote:

> Not sure how to run the dns cache I'll look into that.
> Would you happen to have anything I can read up on for that?

Hmmm, only for redhat.  I guess you must install Bind with a zone that
only does recursive queries and caches them.

> To be honest I'm not sure how to read the results of vmstat.

man vmstat

The output might be different from linux's so that's the best way to know.

You should look carefully at the columns 'r' and 'b'.  High 'r' means
you're cpu-bound.  'b' means you're I/O-bound (roughly).

> Memory doesn't seem to be it either.
> Theres always around 700M free and 700M swap free.

could you show us the output of free?

> Also there are no errors in the log.
> I did run in debug and saw now errors, but again I see high load if
> spamassassin is on or off (just higher with on)

What is the cpu usage reported in top?

>
>
>
>
>
> -----Original Message-----
> From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
> Behalf Of Ugo Bellavance
> Sent: Friday, April 23, 2004 10:48 AM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Re: Major Load please help
>
> Vicchiullo, Rob wrote:
>
>>I am really need some help on this, so please any and all give advice.
>>I am running a sun enterprise with quad 450s and 2 gigs of ram running
>>Solaris 8.
>>MailScanner 4.29.7
>>SpamAssassin 2.63
>>
>>This mail server gets roughly 60,000 to 70,000 emails a day.
>>My problem is this, the load on the box is just insane and the queue
>>gets backed up.
>>When spamassassin is on the load goes to around 18-20 with it if its
>>stays around 8-12.
>>Is there anything I may be missing to alleviate this.
>>I already Have Mailscanners Incoming in the /tmp dir (basically in
>>memory).
>>I've looked through the list and did everything that is said to do,
>>which are real basic things.
>
>
> Have you isolated the problem? I/O (using vmstat), memory (free),
> network (do you have a local dns caching nameserver).
>
> Do you have errors or timeouts inyour logs?
>
> Did you test mailscanner and spamassassin in debug?
> http://www.sng.ecs.soton.ac.uk/mailscanner/serve/cache/252.html
>
> you can check here http://www.mailscanner.biz/maq/#optimize
>
>
>>I'd appreciate any help on this, I'm in a bind on this one.
>>
>>Rob
>>
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