Scheduling policy comes up with a different objective. Scheduling is the assignment of tasks to the processor, so each task is executed until completion. Real-time / embedded systems are designed for providing a response to real-world events in a timely manner.

Events occurring in the real world can have deadlines before which the real-time / embedded system must respond and the RTOS scheduling policy must ensure these deadlines are met.

RTOS scheduling algorithms are classified mainly into two types: offline scheduling (static scheduling) and online scheduling (dynamic scheduling).

Following are the types of scheduling which can be used for scheduling the real-time jobs.