GATE CS 2016 Set 1 — Question 58

NAT+2 / -0MediumDisk Scheduling AlgorithmsI/O OrganizationComputer Organization & Architecture

Computer Organization & Architecture → I/O Organization → Disk Scheduling Algorithms

Last updated 5 September 2026

Question

Consider a disk queue with requests for I/O to blocks on cylinders 47, 38, 121, 191, 87, 11, 92, 10. The C-LOOK scheduling algorithm is used. The head is initially at cylinder number 63, moving towards larger cylinder numbers on its servicing pass. The cylinders are numbered from 0 to 199. The total head movement (in number of cylinders) incurred while servicing these requests is________.

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