Re: [AMaViS-user] Wow! CPU overload...

I'd hesitate to call a load average of 1.02 an "overload".

There is a really good explanation (well it certainly helped me!) of
what is actually being measured in a series of articles available at:

http://www.teamquest.com/resources/gunther/ldavg1.shtml
and
http://www.teamquest.com/resources/gunther/ldavg2.shtml

To quote a point these articles make: 'The "load" is not the
utilization but the total queue length'.

So you can't treat the averages as 1.0 = 100% CPU utilisation.

cheers
Paul

On 03/08/2005, at 7:36 AM, Gary V wrote:

> Matt wrote:
>
>
>> Hi all,
>>
>
>
>> We've got two relay servers setup (relay1 and relay2) and its working
>> fine, but the mail coming in is amazing. I'm glad we went with
>> the two
>> relay server solution instead of everything on one box.
>>
>
>
>> Each of these relay servers is a 3 GIG processor with 1 GB ram.
>>
>
>
>> However.....
>>
>
>
>> relay1: load averages: 1.02, 0.84, 0.83
>> relay2: load averages: 0.50, 0.60, 0.62
>>
>
>
>> They are both usually closer to .80, at this snapshot relay1 was
>> taking a
>> bit of a hit while relay2 was not.
>>
>
>
>> Anyway, email from off our network is taking anywhere between 30
>> seconds
>> and 10 minutes to be delivered. I've got 5 amavis processes
>> running by
>> default (set in master.conf and amavisd.conf).
>>
>
>
>> Do I need to increase the amount of processes, or add 2 more relay
>> servers
>> into the pool? (If need be we can make it four relay servers
>> instead of
>> two).
>>
>
>
>> Any ideas? Thanks!
>> -Matt
>>
>
> I'm sure others will have better ideas, but did you read
> http://www.heinlein-support.de/upload/martinec.pdf ? Read pages 28 and
> 29. I think you will find that with a GIG of RAM, you could easily
> go to
> 10 or 15, and if you add another GIG - that would be good. Did you
> spend some
> time optimizing SpamAssassin (and Bayes)? Can we see your local.cf
> please.
> Are you using custom SpamAssassin rule sets? What is your memory
> usage like
> at the moment? Are you using Pyzor?
>
> Gary V
>
>
>
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