In a batch operating system, four jobs JOB1, JOB2, JOB3, JOB4 are submitted for execution. Each job involves an I/O activity, followed by a CPU time, followed by another I/O activity of the same time span as the first. Each job is associated with a different I/O device. JOB1 requires a total of 11 ms, with 1 ms CPU time. JOB2 requires 10 ms total time with 2 ms CPU time. JOB3 requires 56 ms total time with 8 ms CPU time. JOB4 requires 19 ms total time with 5 ms CPU time. Assume a uni-programming system and answer the following: 3.1 What will be the total time to complete all jobs? 3.2 What will be the total CPU time? 3.3 What will be the CPU utilisation?
In a batch
execution. Each job involves an I/O activity, followed by a CPU time, followed by
another I/O activity of the same time span as the first. Each job is associated with
a different I/O device. JOB1 requires a total of 11 ms, with 1 ms CPU time. JOB2
requires 10 ms total time with 2 ms CPU time. JOB3 requires 56 ms total time with
8 ms CPU time. JOB4 requires 19 ms total time with 5 ms CPU time.
Assume a uni-
3.1 What will be the total time to complete all jobs?
3.2 What will be the total CPU time?
3.3 What will be the CPU utilisation?
Assume a multiprogramming system and answer the following:
3.4 What will be the total time to complete all jobs?
3.5 What will be the CPU utilisation?
3.6 What will be the turnaround time of JOB4?
3.7 What will be the average turnaround time?
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