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Question: suppose we have four jobs in a computer system in...

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Suppose we have four jobs in a computer system, in the order JOB1, JOB2, JOB3 and JOB4. JOB1 requires 8 s of CPU time and 8 s of I/O time; JOB2 requires 4 s of CPU time and 14 s of disk time; JOB3 requires 6 s of CPU time; and, JOB4 requires 4 s of CPU time and 16 s of printer time. Define the following quantities for system utilization: Turnaround time = actual time to complete a job Throughput - average number of jobs completed per time period T Processor utilization-percentage of time that the processor is active (not waiting) of the following systems Compute these quantities (with illustrations if needed) in each a) A uniprogramming system, whereby each job executes to completion before the next job can start b) A multiprogramming system that follows a simple round-robin scheduling. Each process gets 2 s of its execution CPU time turn-wise in a circular manner

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