[c-nsp] Troubleshooting Lag between GigE interfaces

Paul Stewart pauls at nexicom.net
Thu Sep 23 11:53:39 EDT 2004


So, because

gw-7513#sh align
 
No alignment data has been recorded.
 
No spurious memory references have been recorded.

is clean.. then I need to identify why it's packet switching even though
dcef is running correct?  Sorry, just need to understand what I'm trying
to resolve..;)

Paul


On Thu, 2004-09-23 at 11:47, Rodney Dunn wrote:
> On Thu, Sep 23, 2004 at 11:36:16AM -0400, Paul Stewart wrote:
> > On Thu, 2004-09-23 at 11:22, Rodney Dunn wrote:
> > > That traffic hitting the input queue should ONLY
> > > be traffic destined to/from the router.
> > > 
> > > What is the background interrupt level CPU traffic
> > > on the RSP?
> > > 
> > 
> > How can I tell this?  Sorry but I can do a "sh proc cpu" and get this:
> > 
> > CPU utilization for five seconds: 14%/10%; one minute: 20%; five
> > minutes: 21%
> > 
> > But I don't believe that's what you're after..:)
> 
> That tells you that 10% of the overall 14% CPU usage is
> spent under interrupt level and we do 3 things under interrupt
> level:
> 
> a) switch packets
> b) do alignment corrections
> c) d spurious access corrections
> 
> if 'sh align' is clean then it's packet switching.  Which
> makes sense based on your 'sh int stat' output.
> If all packets on a 75xx running dCEf are distributed switched
> the RSP CPU will be at 0% under interrupt level.
> 
> > 
> > Paul
> > 



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