Re: CPU Spiking

[Travis Retzlaff <TRetzlaff@xxxxxxxxxxxx>]

You could try dumping the call stacks a few times during a spike and a few 
times during normal operation to see what the task is doing with all that 
CPU.

http://www-03.ibm.com/servers/eserver/iseries/domino/devtools/dmp/

Thanks,

Travis Retzlaff
Application Integration Consultant
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Web:  http://www.compures.com
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domino400-bounces+tretzlaff=compures.com@xxxxxxxxxxxx wrote on 08/19/2005 
09:50:05 AM:

> A message loop perhaps? That should be evident by watching the console I 

> would think.
> 
> As per Chris's Netstat suggestion, use F15 to subset (filter) for port 
25, 
> once for the local and once again for the remote. Besides looking for 
lots 
> or rapid connections, also use F11 to check the byte counts. 
> 
> ====================================
> Tom Kreimer
> Information Alternatives
> 
> 
> 
> 
> Domino 6.5.4 server on iSeries V5R2
> 
> The last couple of days we are seeing SMTP process spikes that are 
pushing
> the CPU to 98%+.  SMTP task was at 86% for quite a while yesterday.  So
> far, the only thing I've had any luck with is ending the SMTP task and
> restarting it.  We are not seeing any indications of what might be 
causing
> this, but I'm not sure I know what to look for.
> 
> Since I've been watching, I've seen the process spike briefly several
> times, but generally not long enough to cause the entire server to grind 

> to
> a halt like it did yesterday.  My boss is concerned that this is the 
> result
> of some sort of attack on our system.
> 
> Any suggestions would be much appreciated.
> 
> Patrick
> 
> 
> 
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