6503 Routing Module cpu spike(False alert? )

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Nov 9th, 2009
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Two machines shared bulk of data across my cisco 6503 Core switch.

Its routing module CPU reach 99%, switching module remained 20% normal.


When i do sho proc cpu sorted, adding each CPU utilization is not equal to 99% , is it false alert?


If true what can be reason for that? cant 6500 support high data transfer?


attached is output of show proc cpu sorted


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Giuseppe Larosa Mon, 11/09/2009 - 08:02
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Hello Muhammad,

you need to consider also cpu usage by interrupts that should take in account the difference


>> CPU utilization for five seconds: 99%/83%; one minute: 96%; five minutes: 86%


you see the 99%/83% the sum of all processes should reach second value


see


http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a00800a70f2.shtml#high_cpu


http://www.cisco.com/en/US/products/hw/routers/ps359/products_tech_note09186a00801c2af0.shtml#causes


Hope to help

Giuseppe


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