7600 process high cpu

[etn]

i try newest ios 15.1(3)S0a and 12.2(33)SRE

in both case some times i obtain lowing traffic on interface and highest cpu - to 100%

after clear cef linicard i obtain growing traffic and cpu 0%

#sh proc cpu s

CPU utilization for five seconds: 87%/83%; one minute: 91%; five minutes: 96%

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

   7     1711512       87883      19474  4.06%  0.84%  0.89%   0 Check heaps     

245        5688    10115351          0  0.16%  0.12%  0.13%   0 Ethernet Msec Ti

210        2276     2538856          0  0.08%  0.02%  0.01%   0 IP ARP Retry Age

211       44772      267882        167  0.08%  0.04%  0.05%   0 IP Input        

244         428      326057          1  0.08%  0.00%  0.00%   0 Ethernet Timer C

#clear cef linecard

#sh proc cpu s

CPU utilization for five seconds: 0%/0%; one minute: 3%; five minutes: 3%

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

157       36588        1511      24214  0.23%  0.02%  0.00%   0 Per-minute Jobs 

346      110540       43940       2515  0.15%  0.06%  0.05%   0 HIDDEN VLAN Proc

211       45600      280259        162  0.07%  0.04%  0.03%   0 IP Input     

[Nicholas Oliver]

Bill,

This command should not be used without knowledge of the problem that is being corrected.  If you see high CPU on the RP of a SUP720 or an RSP720 there is a problem that needs to be addressed.  It is generally an issue with a certain type of packet passing over the device that requires punting, and the best thing to do in a situation like this is to get a case opened with the TAC to determine what that traffic is and why it is being punted.

-Nick

[evgenyzhur]

HI All!

We have the same problem:

Two boxes with the Cisco 7604, RSP720-3CXL + and some cfc line cards.

At the both boxes cpu load interrupts grows to 80-90%, and "clear cef linecard" command help for a some time.

As the workaround we are using the command:

"remote command switch test mls cef tcam-shadow off".

Also we use the eem script witch applying this commad after the reboot.

We opened an SR 617598837(Bug CSCtn98149) to TAC, but by the TAC said that this is hardware problem.

But as I can see at this forum there is some other users with the same issue.

Looks like we all have the same software problem?

[Alexandr Gurbo]

Hello Evgenyzhur,
we are also open case in cisco TAC on this problem since 29.03.2013.
The problem is not solved yet.
We had WebEX session with the IOS developers, but the result still sad.

[evgenyzhur]

Hi Alexandr!

Can you please notify me about results of the your case by this problem? May be in the private message.

Thank you in advance.