The real-time class uses a scheduling policy with fixed priorities so that critical processes run in predetermined order. Real-time priorities never change except when a user requests a change. Privileged users can use the priocntl(1) command or the priocntl(2) interface to assign real-time priorities.
The scheduler manages real-time processes by using configurable parameters in the real-time parameter table rt_dptbl(4). This table contains information specific to the real-time class.