[c-nsp] High CPU on Cisco 4500-E / SUP6-E, K5L3* processes

[Sebastian Wiesinger]

Hello,

we installed a few Cisco 4500-E with SUP6-E supervisors. Now one of
them is showing a high CPU load, around 60-70%. I'm unable to find the
reason for this. It's running 12.2(46)SG Enterprise Services.

sh proc cpu shows that the "Cat4k Mgmt LoPri" process is taking most
of the CPU time:

49   136483552  81322405       1678 65.22% 57.86% 58.39%   0 Cat4k Mgmt LoPri 

a sh platform health then shows the following processes (note the
typo):

K5L3FlcMan FwdEntry    2.00  14.16     15     10  100  500   16  14    9  332:06
K5L3Unciast IFE Revi   2.00  14.06     15      7  100  500   17  15   10  359:54
K5L3UnicastRpf IFE R   2.00  12.21     15      7  100  500   17  14   10  353:01

They *should* use up to 2.00%, but here they use almost 15% each.


On another switch these processes use around 3.8% CPU time (still more
then the target of 2%).

Does anyone know the reason for this? A quick google shows no trace of
these processes, and they are not explained in the Cisco documentation
for the Catalyst 4500.

Someone told me that K5 is "the FFE/VFE ASIC on the SUP6"?

Regards,

Sebastian

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