What is pre-emptive and non-preemptive scheduling?
Answer
Tasks are usually assigned with priorities. At times it is necessary
to run a certain task that has a higher priority before another task although
it is running. Therefore, the running task is interrupted for some time and
resumed later when the priority task has finished its execution. This is called
preemptive scheduling.
Eg: Round robin
In non-preemptive scheduling, a running task is executed till completion. It
cannot be interrupted.
Eg First In First Out
Operating system - pre-emptive and non-preemptive
scheduling - Jan 07, 2010 at 15:00 PM by Vidya Sagar
What is pre-emptive and non-preemptive scheduling?
Preemptive scheduling: The preemptive scheduling is
prioritized. The highest priority process should always be the process that is
currently utilized.
Non-Preemptive scheduling: When a process enters the state of
running, the state of that process is not deleted from the scheduler until it
finishes its service time.
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