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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.

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The current Rw head is at 53 .

it follows :53--65--67--37--14--98--122--124--183

so number of head movement is ( 65-53) + ( 67-65) + ( 67-37) +( 37-14) + (98-14) +(122-98)+(124-122)+(183-124) =12 +2+30+23+84+24+2+59=236 movements
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