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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