Suppose the read/write head is at track 97, moving toward track 199 (the highest numbered track on

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Suppose the read/write head is at track 97, moving toward track 199 (the highest numbered track on the disk) and the disk request queue contains read/write requests for sectors on tracks 84, 155, 103, 96, and 1978, respectively.

a. What is the total number of head movements needed to satisfy the requests in the queue using the FCFS optimization strategy?

b. What is the total number of head movements needed to satisfy the requests in the queue using the Scan optimization strategy?

c. What is the total number of head movements needed to satisfy the requests in the queue using the Look optimization strategy?

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Operating Systems

ISBN: 978-0201773446

3rd edition

Authors: Gary Nutt

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Question Posted: Jun 04, 2011 06:23 AM

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Suppose the read/write head is at track 97, moving toward track 199 (the highest numbered track on

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The blocks to be read are 97 84 155 103 96 and 197 a FCFS ...View the full answer

Operating Systems

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