6503 Routing Module cpu spike(False alert? )

[ahmad82pkn]

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

[Giuseppe Larosa]

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