Prove that the minimax response ratio algorithm of the preceding problem minimizes the maximum response ratio for a given batch of jobs.
Answer to relevant QuestionsDefine residence time Tr as the average total time a process spends waiting and being served. Show that for FIFO, with mean service time Ts, we have Tr = Ts/(1 – p), where p is utilization. Five batch jobs, A through E, arrive at a computer center at essentially the same time. They have an estimated running time of 15, 9, 3, 6, and 12 minutes, respectively. Their (externally defined) priorities are 6, 3, 7, 9, ...List and briefly define four classes of real-time scheduling algorithms. This problem demonstrates that although Equation (10.2) for rate monotonic scheduling is a sufficient condition for successful scheduling, it is not a necessary condition (i.e., sometimes successful scheduling is possible ...Consider a disk with N tracks numbered from 0 to (N – 1) and assume that requested sectors are distributed randomly and evenly over the disk. We want to calculate the average number of tracks traversed by a seek. a. ...
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