When you have logging enable at level 7 it takes a lot of resources from the PIX. It is always advised to use this logging level just for troubleshooting purposes and not for day to day monitoring.
The two processes taking the more CPU usage are:Mrd 001dbdc6 01212460 00db9fe0 7665080 0120e508 11428/16384 Dispatch UnitMrd 009da86f 012b5cc0 00db9fe0 3968310 012b3d48 6632/8192 LoggerLogger as the name implies is used for logging. Try disabli...