Priority Scheduling

• A priority number (integer) is associated with each process
• The CPU is allocated to the process with the highest priority (smallest integer º highest priority).

1. Preemptive
2. nonpreemptive

• SJF is a priority scheduling where priority is the predicted next CPU burst time.
• Problem º Starvation – low priority processes may never execute.
• Solution º Aging – as time progresses increase the priority of the process.