Sh Process Cpu Utilization

[mahesh18]

Hi Everyone,

Need to confirm if this device has normal Cpu Utilization

Here is graph

    7777777779777777777977877777777779777777777777777797777779777777777777

    5485334859352454446056255755456449435434353459664525635839526632465533

100          *                       *                       *

90          *         *             *                *      *

80 * **   *** *  *   ********** **  *  *    *  **** **** ** ** **   ***

70 **********************************************************************

60 **********************************************************************

50 **********************************************************************

40 ######################################################################

30 ######################################################################

20 ######################################################################

10 ######################################################################

   0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.

             0    5    0    5    0    5    0    5    0    5    0    5    0

                   CPU% per hour (last 72 hours)

                  * = maximum CPU%   # = average CPU%

As graph shows average is still around 40 but it frequently spikes to 80% utilization.?

Thanks

MAhesh

[Joseph W. Doherty · Accepted solution]

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Posting

Device is?

Total volume of transit traffic is?

Service features enabled are?

[mahesh18]

Hi,

Device is 4506 switch.

How can i check total volume of transit traffic?

Also how can i check service features enabled on the device?

Thanks

MAhesh

[Rick Morris · Accepted solution]

Mahesh,

There are a few variables missing to help assist.

You provided CPU history.

Something else to look at is sh proc cpu sorted

This will help show what processes are running and using what percentage.

You can also do a sho proc cpu sorted | e 0.0

This will exclude any of the outputs that have 0.0%

What are you trying to figure out?  Is there slowness on the network and you are thinking it is related to CPU?  Does this graph always look like this, it is hard to know of this is normal since there is no baseline to compare it to.  Do you use any mrtg or netflow data to do any graphs?

[mahesh18]

Hi Rick,

Here  is info

   sho proc cpu sorted | e 0.0

CPU utilization for five seconds: 32%/0%; one minute: 36%; five minutes: 37%

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

103  2606731460 848189668       3073 12.33% 13.31% 13.34%   0 Spanning Tree

  48  16638903322729255077          0 12.17% 12.54% 12.50%   0 Cat4k Mgmt HiPri

  36   226009908  42838390       5275  1.11%  1.05%  1.04%   0 IDB Work

Thanks

Mahesh

[Rick Morris · Accepted solution]

So in this case there are two points of interest causing your cpu to be at the 40% mark, Spanning-Tree and Cat4k Mgmt HiPri.

Here is a troubleshooting guide to follow that will help you isolate and some tips to resolve these issues.  There is a lot of different things to view and try to post in the forum.  If you look at this guide it will show you specifically some troubleshooting steps.

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/troubleshooting/cpu_util.pdf

[mahesh18]

Hi Rick,

Thanks for url.

i will dig deeper to find the high cpu cause.

Thanks

MAhesh