Ciscoworks is giving me a HighUtilization on the PSR component of one of my 6500's with a sup 720. When I look at cpu utilization using 'show process cpu sorted' it doesnt show any high utilization. Any ideas?
What show proc cpu hist does show you is an over view of the utilisation from the last 60 seconds, 60 minutes and 72 hours.
As you can see there are high peaks (peak noted by the * sign), but nothing sustained (average noted by the # sign). Your polling/alerting must be set as such to catch this high peak event.
I would at first glace say that this is nothing too much to worry about as the CPU is not underload for very long, but it may well be worth getting to the bottom of it if it is a frequent and/or regular occurance.
The problem you have is that the show proc cpu sorted command only gives you at max the last 5 mins of processes utilising the cpu. You either need to logon immediatley when you recieve the alarm to see what process spiked (this depends on whether you monitoring alerts straight away or not) or set up some other method in understanding what is hitting the CPU at that time. In the past I have set SPAN sessions up to monitor the control plane to see what is being sent to the cpu at specific times.
It may just be that there is a network event, the requirement for STP or other mechanisms to re-compute at these times so it would be worth looking around the network to see if anything else has a similar spike or event that may have caused some topology change. If not, then it is something specific to this 6500. A little assumption here that you are using this 6500 as the root bridge or some central point of control.
SNMP is a fairly common cuase of these kind of spikes. Usually a good place to start to ensure these strings are secured.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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