Kernel Processes

The kernel's daemon and housekeeping processes are members of the system scheduler class. You can neither add processes to nor remove processes from this class. Also, you cannot change the priorities of these processes. The ps -cel command lists the scheduler class of all processes. A SYS entry in the CLS column identifies processes in the system class when you run the ps command with the -f option. For more information, see the ps(1) man page.