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Find the number of head movements in cylinders using SSTF scheduling.

Consider the following disk request sequence for a disk with 100 tracks.

98, 183, 37, 122, 14, 124, 65, 67

Head pointer starting at 53 (current position of R/W heads).Find the number of head movements in cylinders using SSTF scheduling.

1Comment
kn nk @knkn
16 Mar 2016 06:28 pm

In case of SSTF scheduling the order of accessing cylinders will be 53, 65, 67, 37, 14, 98, 122, 183
So, total head movements is sum of movements 53->67, 67->14, 14->183 = 14 + 53 + 169 = 236