C) Round-Robin
Scheduling : The ROUND-ROBIN
scheduling is designed especially for time sharing systems. A
small unit of time, called time quantum is defined. A time quantum
is generally from 10 to 100 milli seconds. The ready queue is
treated as a circular queues. The CPU scheduler goes around the
ready queue, allocating the CPU to each process for a time interval up to a
quantum in length.
If the process has a CPU burst less than the time quantum, the
process itself releases the CPU voluntarily. Then the next job in
the queue is taken up. Otherwise, the status of he process is saved and
CPU takes up the next job in the queue. The following example illustrates.
