high CPU usage on cisco catalyst 6500 with itasca process

In a Cisco 6500 switch with ACE, if the process itasca is consumming too much CPU, it can be caused by logging supervisor command on ACE.

This command will dump the logging of ACE into the supervisor and consumes RP resources.

To resolve this remove the cmd "logging supervisor " from ACE configuration and make ACE send the logging to a log server directly.
 
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The same problem was seen with logging generated by the switch itself.
The fix was: 
no logging on

At least, until the problem is found, the cpu was back to normal.

Before:
SWITCH# proc cpu sort
CPU utilization for five seconds: 99%/1%; one minute: 99%; five minutes: 99%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
  62     2749624    243589      11287 86.82% 83.39% 84.82%   0 itasca
 131       11100     21481        516  0.47%  0.60%  0.67%   4 SSH Process
 499   5563701363409673472          0  0.39%  0.44%  0.45%   0 Port manager per
 
After: 
SWITCHh #sh proc cpu sort
CPU utilization for five seconds: 5%/1%; one minute: 9%; five minutes: 30%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 499   5563783763409717288          0  0.79%  0.94%  0.87%   0 Port manager per
 560     40374923186106614          1  0.31%  0.31%  0.31%   0 HSRP Common
 273   2786680721058539466        263  0.31%  0.36%  0.41%   0 IP Input