Mathematics · Operating Systems
Consider a disk queue with I/O requests on cylinders in arriving order: 6, 10, 12, 54, 97, 73, 128, 15, 44, 110, 34, 45. The disk head is at cylinder 23 and moving towards decreasing cylinder numbers (towards 0). Total cylinders are numbered 0 to 149. What is the total head movement using SCAN scheduling?
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