High CPU is one of the most common symptom observed by users when troubleshooting some issue with WAAS. High CPU in WAAS could be because of some geniune reason and as such this should not cause any problem. If high CPU stays for a long period of time, more investigation is required to get to the root cause of the issue.
Troubleshooting High CPU
Check the following for understanding the cause of high CPU
Determine the process causing High CPU
Use command such as: show process cpu | ex 0.0 to pick on process that uses any CPU time. Follow the link for more info on this.
In this command output the "start" is 60008BD8 and the "end" is 6191C1F4.
b) Next turn on "profile" by configuring the following: profile 60008BD8 6191C1F4 10
In this case 60008BD8 would be the start of main:text address and 6191C1F4 would be the end of main:text. The 10 represents the rate of granularity that the profiling needs to be configured at. You would run the above command for about 3 minutes.
c) Next start the "profile" by configuring "profile start" and let this run for 10 mins the "profile stop"
d) Turn off the "more" page scrolling feature as you would be collecting large info by the following config: "term len 0"
e) Collect the "CPU" profile info by configuring:
show profile ter
show profile detail
Note: The above info would be lengthy and you would want to set the logging.
f) Finally enter the following commands:
Check the output data to understand what is causing the issue.
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