High CPU Usage on 4507

[kevinhum122]

There is abnormal usage of CPU on the new core switch 4507, the details as below, anyone who can help me ?

I found the process "iosd" occupies around half hundred percent of CPU usage.

Core_WS-C4507#sh proc cpu sorted

Core 0: CPU utilization for five seconds: 8%; one minute: 12%;  five minutes: 39%

Core 1: CPU utilization for five seconds: 98%; one minute: 93%;  five minutes: 66%

PID    Runtime(ms) Invoked  uSecs  5Sec     1Min     5Min     TTY   Process

8518   2177349     27874427 485    52.92    52.77    52.74    0     iosd          

[Jose Solano · Accepted solution]

Hi,

This issue may be related to traffic being punt to the CPU for processing, below is a very useful link to troubleshoot this problem:

http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00804cef15.shtml

Hope this helps.

[kevinhum122]

Thanks Leo's assistance, sure, In the last,the issue happens thanks to the traffice flapping from WLC two ports, after port-channel made, the issue is completed, thanks Cisco Forum nice supporting, it really impresses me badly.