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Re: High Processor Rates on Routers.
On Wed, Nov 06, 2002 at 08:21:39AM -0500, email@example.com wrote: > > > Ladies & Gentleman. > > > Was wondering if it is common for processor rates on higher end Crisco boxes to race from 1 or 2 % show on the 5 second processor rate interval, to anywhere from 70 to 90 %, instanteously, then drop back down to 1 or 2 % after 10 seconds. > > Check out for down interfaces, Serial/POS on the router. I've seen this cause these spikes (although not normal for 10 seconds, more normally about a second or so) every 30 seconds and make sure they're shut down. Also check out OSPF to see if there is an interface flapping somewhere in your network with the undocumented command 'sh ip ospf stat', which will tell you what OSPF is doing, and look for a correlation between the delta times and your high CPU utilisation. BGP can cause a lot of processor utilisation when updates are received, although this is not normally at accurate 30 second intervals, so I wouldn't suspect this particularly. Cheers, -- |=========----- -------=======| | Chris Roberts (firstname.lastname@example.org) | |=======------- -----=========|