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4500 cpu usage is very high

my 4500 core always in 60 % cpu utility , and when i run #sh proc cpu sorted i find that

55  29725041543795572214          0 39.43% 41.40% 41.39%   0 Cat4k Mgmt LoPri

which mean that this process is the top one , and when i run #sh platform health i found that

Stub-JobEventSchedul  10.00  15.98     10     64  100  500   20  17   12  29269:55

K2CpuMan Review        30.00  35.60     30     48  100  500   49  46   32  52390:52

those two process are the top and they already exceed their maximum rang

and when i run #sh platform cpu packet statistics i can find that

Packets Received by Packet Queue

Queue                  Total           5 sec avg 1 min avg 5 min avg 1 hour avg

---------------------- --------------- --------- --------- --------- ----------

Esmp                        5053121950       475       462       340        326

L2/L3Control                 244395185        17         8         5         11

Host Learning                 67315739         0         0         0          0

L3 Fwd Low                   346689615        73        23        14         13

L2 Fwd Low                  5336180603      1180      1129       831        804

L3 Rx Low                      2287913         0         0         0          0

RPF Failure                    7510829         1         0         0          0

so how i can over come this issue

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2 REPLIES 2
Beginner

4500 cpu usage is very high

Kimaactact,

Is the CPU utilization you're seeing outside of what you expect to see or has it always been this way?

If this is outside of the norm, do you know of anything that has changed recently?

Have you seen the document below? Does this apply to you?

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

Regards,
Aaron

Beginner

4500 cpu usage is very high

thank you for being care about my case

sure i read this documentation and it helped me a lot to find the problem

in my network i have two core switches both of them 4500 but only one is high cpu utility , may i can understand that this problem is  cause that this core is the Spanning tree master of all vlans even those on the other core , and there is a port channel (4g) between them and when i shutdown this channel the CPU usage of the core degrade to 30% which is half , may be the solution is to divide  the number of vlans and make half of them been mastered by one core and the other half mastered by the other one

thank you again

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