Describe CPU Scheduler

Question

Describe CPU Scheduler?

Answer 1

Choose from among the processes in memory which are ready to execute, & allocates the CPU to one of them.

• CPU scheduling decisions may take place while a process:

              1. Switches from running to waiting state.

              2. Switches from running to ready state.

              3. Switches from waiting to ready state.

              4. Terminates.

• Scheduling under 1 & 4 is nonpreemptive.
• All of the other scheduling is preemptive.