題組內容
6. Suppose that a disk drive has 1024 cylinders, numbered from 0 to 1023. The drive is currently serving
a request at cylinder 200, and the previous request was at cylinder 125. The queue of pending requests, in
FIFO order, is
50, 500, 250, 800, 350, 550, 400, 600, 100.
Starting from the current head position, what is the total distance (in cylinders) that the disk arm moves to
satisfy all the pending requests for each of the following disk scheduling algorithms?
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