Problem:

Question 1: Describe the meaning of the Tr /Ts ratio. Describe why non-preemptive FIFO dispatching produces unfair scheduling when there is a mix of long and short-lived processes.

Question 2: Describe the problem with fairness with Preemptive Round-Robin scheduling wrt I/O-bound processes vs. compute-bound processes. How does Virtual Round-Robin scheduling solve the problem?

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