I have a Cisco 3550-12G switch experiencing high CPU loads. For a long time (years?), CPU load has been minimal (a couple of percent; this is all graphed by our monitoring systems). About 4 weeks ago, the switch rebooted, possibly due to some power work being done in the same building. Ever since then, CPU is way above baseline and is causing alarms with our monitoring.
IOS is IP Services 12.2(25)SEE2. See attachment for show proc cpu output.
A few minutes ago 5 second CPU was about 76%/36% with the HMATM Learn proc taking about 36% of the CPU. Now it is 66%/39% with 25% going to this process.
Again, it varies, but it is well above what baseline was before the reboot.