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high process cpu history WS-C4506

Hello I have a problem with cpu high.

Can anyonetell me if normal have this process?

CPU utilization for five seconds: 29%/0%; one minute: 29%; five minutes: 30%

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

  29   198216576 402619350        492 15.83% 15.87% 15.68%   0 Cat4k Mgmt HiPri

  30   175197296  96703435       1811 10.23% 10.10% 10.64%   0 Cat4k Mgmt LoPri

Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version 12.2(25)EWA14, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Tue 20-May-08 18:49 by chendah
Image text-base: 0x10000000, data-base: 0x114BE208

ROM: 12.2(31r)SG2
Dagobah Revision 226, Swamp Revision 34

System returned to ROM by reload
System restarted at 00:36:52 UTC Sat Dec 10 2011
System image file is "bootflash:cat4000-i9s-mz.122-25.EWA14.bin"

cisco WS-C4506 (MPC8245) processor (revision 10) with 262144K bytes of memory.
MPC8245 CPU at 266Mhz, Supervisor II+
Last reset from Reload
1 Virtual Ethernet interface
144 FastEthernet interfaces
2 Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2102

Thanks

3 REPLIES
Cisco Employee

high process cpu history WS-C4506

Hi Santiago,

This looks normal to me as its not that high. I would get worried if the CPU histroy goes beyond 70-80% utilization.

The processes that you see are some of the management protocols that are counted against it like STP, CDP, VTP etc.

Please see the link below on more understanding about these processes :

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

Cheers,

-amit singh

New Member

high process cpu history WS-C4506

Thanks for your reply, My history reports high cpu the last 72 hours

sh processes cpu history

     2222222222222222333332222222222222222222222224444433333222

     9777776666688888222225555588888777778888899993333300000999

100

90

80

70

60

50

40                                               *****

30  **********************************************************

20  **********************************************************

10  **********************************************************

    0....5....1....1....2....2....3....3....4....4....5....5....

              0    5    0    5    0    5    0    5    0    5

               CPU% per second (last 60 seconds)

     4444353534444435353444543545344444353534545435353444543535

     3382343043525345353353413528338494695474049559686496545967

100

90

80

70

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

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

40  **** * * ***** * * ***** *** *****************************

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

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

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

    0....5....1....1....2....2....3....3....4....4....5....5....

              0    5    0    5    0    5    0    5    0    5

               CPU% per minute (last 60 minutes)

              * = maximum CPU%   # = average CPU%

     5556565565585575566666555665666556595565665556666666656666695556555565

     9990809739367827810022399018200843798889218896012151191110058663987849

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%

Any idea?

Thanks.

Cisco Employee

high process cpu history WS-C4506

Santiago,

You need to keep an eye now on your CPU utilization. We need to capture the related " process CPU" and "CPU History" and " Process mem " outputs when ever it goes beyond 50-60 %. We will analyze which process is consuming the most resources. This history shows some spikes but its hard to tell without the realtime capture when this issue is happening.

In my past experience, I have seen these two process really going up when you have a STP loop or some host sending unwanted broadcast traffic or some multicast traffic being punted to the CPU.

As mentioned lets capture the outputs when the CPU is high next time and analyze the outputs. You can also use the SPAN feature to monitor the CPU queues and see what traffic is being punted or processed by CPU.

Cheers,

-amit singh

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