- Operating Systems Class 1 (55.52 KiB) Viewed 27 times
Operating Systems Class:
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answerhappygod
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Operating Systems Class:
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8) Suppose that a disk drive has 10000 cylinders (numbered 0-9999). It has just finished a request at cylinder 188, and the previous request was at 102. The queue of pending requests (in FIFO order) is: 12, 7650, 867, 323, 9878, 444, 3827, 7878, 587. Starting at the current position, calculate the total distance (in cylinders) that the disk arm must move to satisfy all the pending requests for each of the disk scheduling algorithms: a. FCFS d. LOOK b. e. SSTF C-LOOK C. SCAN f. C-SCAN
8) Suppose that a disk drive has 10000 cylinders (numbered 0-9999). It has just finished a request at cylinder 188, and the previous request was at 102. The queue of pending requests (in FIFO order) is: 12, 7650, 867, 323, 9878, 444, 3827, 7878, 587. Starting at the current position, calculate the total distance (in cylinders) that the disk arm must move to satisfy all the pending requests for each of the disk scheduling algorithms: a. FCFS d. LOOK b. e. SSTF C-LOOK C. SCAN f. C-SCAN