System Interface Guide

Real-time Class

The real-time class uses a fixed-priority scheduling policy 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) function to assign real-time priorities.

The scheduler manages real-time processes using configurable parameters in the real-time parameter table rt_dptbl(4). This table contains information specific to the real-time class.