Question: 4 Consider a computer system to which two types of computer jobs are submitted. The mean time to run each type of job is m

4 Consider a computer system to which two types of computer jobs are submitted. The mean time to run each type of job is m

1 . The interarrival times for each type of job are exponential, with an average of li type i jobs arriving each hour. Consider the following three situations.

a Type 1 jobs have priority over type 2 jobs, and preemption is allowed.

b Type 1 jobs have priority over type 2 jobs, and no preemption is allowed.

c All jobs are serviced on a FCFS basis.

Under which system are type 1 jobs best off? Worst off?

Answer the same questions for type 2 jobs.

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