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John Pong
Beginner

Nexus 7000 100% kernel

We monitored different kernel CPU reading using "sh system resources" and "sh proc cpu sort" wherein 100% kernel CPU is observed under "sh system resources" while "sh proc cpu sort" shows a much lesser value. I believe this is bug ID CSCte81951 however I was unable to verify which NX-OS version under the 5.2 release train this is fixed. Any inputs or workaround for this would be highly appreciated.

Nexus7000#show system resources

Load average:   1 minute: 0.17   5 minutes: 0.42   15 minutes: 0.61

Processes   :   814 total, 2 running

CPU states  :   0.0% user,   100.0% kernel,   0.0% idle

Memory usage:   4115776K total,   2958072K used,   1157704K free

Current memory status: OK

Nexus7000# show proc cpu sort

PID    Runtime(ms)  Invoked   uSecs  1Sec    Process

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

23511          134       207    647   14.2%  ospf

25062          124        88   1410   12.4%  ospf

23513          140       374    375    5.7%  ospf

23514          142       369    385    5.7%  ospf

9478    217680109  2147483647     80    4.8%  mts-sync-thr

23382          343       100   3439    3.8%  netstack

23319          139        53   2634    0.9%  urib

23439    107024022  549782806    194    0.9%  snmpd

23527    588678500  2147483647    241    0.9%  glbp

! Some output have been ommitted

CPU util  :   8.6% user,   15.1% kernel,   76.3% idle

kickstart: version 5.2(1)

system:    version 5.2(1)

Kernel uptime is more than 500 days.

1 REPLY 1
InayathUlla Sharieff
Cisco Employee

John,

No workarounds. Workaround is only to upgrade your firmware.

Following are further more bugs:

CSCuf96240

Fixed-In Fixed-in

7.0(0.7)

5.2(9.128)S0

6.2(1.73)S0

6.1(4.65)S0

CSCte81951 Fixed in:

5.0(1a)

5.0(2)

5.0(2.5)

4.2(5)

4.2(1)N2(1)

6.0(2)A1(1)

Hope this helps.

Regards

Inayath

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