CPU

[Robo123]

Hi,

I have a 4506 switch running " cat4500e-universalk9.SPA.03.06.07.E.152-2.E7.bin" where we are getting high cpu.

Core 0: CPU utilization for five seconds: 19%; one minute: 28%; five minutes: 33%
Core 1: CPU utilization for five seconds: 94%; one minute: 65%; five minutes: 58%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
4590 237289 27421279 294 56.39 46.38 45.21 0 iosd
4544 2857663 33687667 212 0.36 0.33 0.33 0 ffm
7 146605 6044430 24 0.04 0.01 0.03 0 sirq-net-rx

Please help to resolve the issue.

[Julio E. Moisa]

Hi

It could be a bug, an upgrade could be required, I suggest open a case with the Cisco TAC, to analize the device, please check this link:

https://supportforums.cisco.com/t5/lan-switching-and-routing/iosd-process-getting-50-cpu-utilization/td-p/2235501

:-)

[Robo123]

can you share the bug id same time i have another device "cat4500e-universalk9.SPA.03.06.07.E.152-2.E7.bin"running in latest IOS .

Please Suggest on the above.

[paul driver]

Hello

Can you post

show process cpu sorted | ex 0%

res

Paul

[Robo123]

Core 0: CPU utilization for five seconds: 19%; one minute: 28%;  five minutes: 33%

Core 1: CPU utilization for five seconds: 94%; one minute: 65%;  five minutes: 58%

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

4590   237289      27421279 294    56.39    46.38    45.21    0     iosd              

4544   2857663     33687667 212    0.36     0.33     0.33     0     ffm 

[Leo Laohoo]

If one gets high CPU and the process causing this is "iosd", this normally means that the supervisor card is being hammered by downstream clients pushing too much data.  To find out which ones they are, just look at the interface counters with very high Total Output Drops.

[Robo123]

S 

[sbhadrav@cisco.com]

1- Below you can find a simple guide to troubleshoot on the most common causes of high CPU in the 4500 platform just in case you need it for future reference.

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

2- Kindly check in the logs if there are any logs pointing to any routing protocols flaps/ HSRP flaps/MAC addres flaps?

3- If any issues see when the routes are unreachalbe refer the following bug :CSCua99861 (

High CPU identified attributed to L3 Glean packets coming in from a couple of print servers sending packets to unknown destinations and after shutting them down, the CPU had dropped down).

4-Further more to determine the root cause we would need the following information:

- show version, show module

- show process cpu history

- show processes cpu sorted

- show processes cpu detailed process iosd sorted

- show platform health

- show platform cpu packet statistics

- show platform cpu packet statistics all

- show platform cpu packet buffered

- show ip traffic