Re: [nsp] show proc cpu

From: Alex Bligh (amb@gxn.net)
Date: Wed Sep 02 1998 - 07:44:37 EDT


Rephrase:

> > Anyone know what Cisco's are doing when the CPU usage column in
> > show proc cpu adds up to nothing like the number at the top? Debugging
> > normally does this, but it isn't switched on in this case (4700).
> > I think it's switching packets that does it, though I thought that
> > normally hit IP Input.
> ...
> > telehouse16#show proc cpu
> > CPU utilization for five seconds: 37%/35%; one minute: 42%; five minutes: 41%
>
> Notice the 35%? That's the time spent at interrupt level. So the usage
> from show proc cpu is only expected to add up to around 2%.

OK, I have a router spending 35% of its time at interrupt level. On a
4700 what processes take up interrupt level time. I'm not process switching
as that (I believe) turns up as IP input. So is the the interrupt overhead
of Fast Switching (for instance)?

-- 
Alex Bligh
GX Networks (formerly Xara Networks)



This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:18 EDT