How do I check the issue of High CPU Utilization for Catalyst 3850

[Johan Ling]

Hi,

My Catalyst 3850 is showing high CPU utilization and I am unsure what is causing the issue.

I have looked a the ports and the reliability is 255/255, txload and rxload are very low.

This is the output from the command show processes cpu sorted

Core 0: CPU utilization for five seconds: 96%; one minute: 96%; five minutes: 96%
Core 1: CPU utilization for five seconds: 94%; one minute: 96%; five minutes: 95%
Core 2: CPU utilization for five seconds: 99%; one minute: 96%; five minutes: 95%
Core 3: CPU utilization for five seconds: 97%; one minute: 94%; five minutes: 93%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
5698 2290352 31459413 1589 71.60 72.64 73.04 1088 fed
6229 970532 23193917 1201 18.34 20.26 19.89 0 pdsd
6255 905085 11733563 80 4.29 4.29 0.47 0 cli_agent
6238 3142235 25056095 632 1.08 0.95 0.64 0 eicored
10208 1174689 36029831 133 1.04 1.19 1.17 34816 iosd
6231 2043850 98257099 195 0.59 0.08 0.04 0 osinfo-provider
41 1030 34694495 0 0.05 0.03 0.04 0 sirq-timer/3
10204 3854685 17713063 18 0.05 0.06 0.05 0 wcm

How can I know what exactly is causing it and pinpoint the issue?

Thanks!

[johnd2310]

Hi,

What is the ios version running on your switch?

Thanks

John

[Johan Ling]

Hi John,

The IOS version is 3.3.3SE(DF).

Is it related to this Bug ID: CSCuz57493?

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuz57493/?rfs=iqvred

Thank you.

[Leo Laohoo]

FED? What firmware is this switch running on? 3.6.X/3.7.X?

Read this:  FN - 64191 - Catalyst 3850/3650 Switches That Run Cisco IOS XE Releases 3.6.5E/3.7.4E or Earlier Might Exhibit High CPU Usage - Workaround Provided

[Johan Ling]

Hi Leo,

Thank you for your reply. I will try to reload/upgrade the switch.