Find the seek time using SCAN, C-SCAN, Look and C-Look disk scheduling algorithms for processing the following request queue: 35, 70, 45, 15, 65, 20, 80, 90, 75, 130. Suppose the disk has tracks numbered from 0 to 150 and assume the disk arm to be at 30 and moving outward.
Find the seek time using SCAN, C-SCAN, Look and C-Look disk scheduling algorithms for processing the following request queue: 35, 70, 45, 15, 65, 20, 80, 90, 75, 130. Suppose the disk has tracks numbered from 0 to 150 and assume the disk arm to be at 30 and moving outward.[10]
Video solutionDisk Scheduling: SCAN C-SCAN LOOK C-LOOK Seek Time2:25
Speed
Checked against the model answer before publishing.
- Request Queue: 35, 70, 45, 15, 65, 20, 80, 90, 75, 130 - Track range: 0 to 150 - Initial head position: 30 - Direction: Outward (toward higher tracks) Sorted requests: 15, 20, 35, 45, 65, 70, 75, 80, 90, 130 --- Head moves outward to 150, then reverses to service lower requests. Order: 30 → 35 ...