The load average will give an indication that your system is under stress. You'll need to do some digging to find out the actual cause though when that happens.

nicole thomson wrote:
now reduced 6000 to 600 now, during these hours i dont see any bandwidth saturation, regarding paging, oops i didnt observe that. Let me try to figure it out when it occurs next time.




 > To: [email protected]
 > From: [email protected]
 > Date: Mon, 14 Dec 2009 09:15:55 -0700
> Subject: [qmailtoaster] Re: Fine tuning qmail+spamdyke - continuation with my previous mail
 >
 > nicole thomson wrote:
 > > Thanks eric
 > >
> > Now i increased the timeouts from 600 to 6000, let me wait and see does
 > > it needs tobe increased more, also i subscribed in spamdyke users
 > > mailing list. Will update the happenings frequently
 > >
 > > --Nic
 > >
 > >
 >
 > 6000 (1:20:00) seems excessive. I think that 600 (00:10:00) is
 > reasonable. You might end up with a lot of idle connections with a
 > setting this high, which would tend to consume your ram. We are talking
 > the idle_timeout_secs parameter in spamdyke, right?
 >
 > You need to find the root cause. Are you experiencing bandwidth
 > saturation? Is paging high? Is there some other resource that's limited?
 > Timeouts are typically symptomatic of some other problem. Are you seeing
 > timeouts from a variety of legitimate sites?
 >
 > --


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--
-Eric 'shubes'


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