High CPU in Analysis Plane

Did you ever get an answer to this? I am running into the same thing today, with LTM+APM. Since it is just one CPU pegged, and if I recall correctly the Linux host OS is always pegged to one core, I'm guessing it's related to something running on Linux. Could it possibly be the act of running reports on the system? I was trying to run APM reports and it's a pretty busy box, but not sure if it's busy enough to account for this. Any ideas would be appreciated, as would be a good explanation of what the "analysis plane" is.