08-29-2012 05:27 AM
Hello,
I've noticed a strange behaviour in my 2960s regarded to CPU.
CPU level is very high, 70-75% when nobody is logged by vty or console, but it drops drastically to 40% when sombebody logs in. I've been able to discover that this is due to CPU interrupt level, as it shows the output of sh process cpu sort 5sec, just logged in.
RH0A01-SW1-10G#sh proces cpu sorted 5sec
CPU utilization for five seconds: 68%/37%; one minute: 67%; five minutes: 50%
...Some seconds after logged in...
RH0A01-SW1-10G#sh proces cpu sorted 5sec
CPU utilization for five seconds: 35%/11%; one minute: 52%; five minutes: 48%
Does anybody knows the reason for this?
Thanks!
08-29-2012 04:02 PM
There were critical HIGH CPU bugs with the 12.2(58)SE and SE1 as well as 15.0(1)SE and SE1. Cisco has managed to "fix" the issues with the respective SE2 releases BUT now you'll see the cosmetic bug after that. The cosmetic bug will show that you still have HIGH CPU but that's just it. It's cosmetic.
If you ain't running the IOS I've mentioned above, what is the complete IOS you are running?
08-30-2012 12:34 AM
My IOS version is 12.2(55)SE2.
Maybe it is only cosmetic in this IOS version as well but it makes CPU monitorization useless with false data. Indeed I have MRTG graphs that shows that strange behaviour. I hope CISCO solve this completely.
Thanks.
08-31-2012 03:28 AM
We have a similar issue.... Any answer??
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