3650G high cpu of process "http core"

[zhao lu]

I have a cisco 3560G-24TS-E switch.I found a process of "http core" high cpu.As show bellow:

------------------ show process cpu ------------------
CPU utilization for five seconds: 100%/0%; one minute: 99%; five minutes: 99%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
 247   220163023    32190938       6839 92.00% 91.00% 92.52%   0 HTTP CORE  

------------------ show logging ------------------

-Traceback= 2025FFCz 2632708z 2612A20z 261A3A8z 222C584z 222C990z 2233F8Cz 22266B8z 19F4EE4z 19EF638z
Jun 18 05:10:48: %TCP-2-INVALIDTCB: Invalid TCB pointer: 0x581CA98 -Process= "HTTP CORE", ipl= 0, pid= 247

I want to know why this process high cpu ?

[dasthomp]

Zhao Lu,

Are you still having this issue?

If so I can suggest two options that may help you.

1. Non-upgrade option.

Try issuing the following commands during an approved maintenance window when this problem is happening. 

      -clear ip http client cache all

      -show tcp brief

          - clear respective tcp tcb #   & observe results, (see if the HTTP process spikes again).

      - try disabling http/https (if allowed & not needed) otherwise

      -try a reload  

2.  Upgrade switch code to a newer version

      You may have hit a potential software defect

Hope that helps.