Disk scheduling algorithms

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Reference no: EM1379530

You will calculate the total distance that a disk arm moves to satisfy pending requests, for different disk scheduling algorithms.

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Question1. Assume that a disk drive has 5,000 cylinders, numbered 0 to 4,999. The drive is recently serving a request at cylinder 143, and the last request was at cylinder 125. The queue of pending requests, in first-in-first-out (FIFO) order, is as follows:

92; 1,320; 879; 1,984; 1,023; 1,690; 1,123; 2,002; and 93

Question2. Calculate the total distance in cylinders?starting from the current head position?that the disk arm moves to satisfy all the pending requests, for each of the following disk scheduling algorithms:

FCFS
SSTF
SCAN
LOOK
C-SCAN

Reference no: EM1379530

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