COMPUTER SCIENCE ILLUMIN.-TEXT
7th Edition
ISBN: 9781284156010
Author: Dale
Publisher: Jones & Barlett
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Chapter 11, Problem 56E
Program Plan Intro
Disk scheduling:
- In a computer, multiple processes run over the same time.
- To handle this multiple processes, the
operating system decides which process has to be executed first. This technique is called as disk scheduling. - There are different types of scheduling algorithms. They are as follows:
- First-come, First-served (FCFS)
- Shortest-Seek-Time-First (SSTF)
- SCAN
SCAN disk scheduling
- The SCAN algorithm is called as elevator algorithm.
- In the SCAN algorithm, the disk arm starts at one end of the disk and moves toward the other end.
- It processes the request for each cylinder until it gets to the other end of the disk.
- At the other end, it reverses the direction of head movement.
- The head continuously moves back and forth across the disk based upon the closest distance.
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Chapter 11 Solutions
COMPUTER SCIENCE ILLUMIN.-TEXT
Ch. 11 - Prob. 1ECh. 11 - Prob. 2ECh. 11 - Prob. 3ECh. 11 - Prob. 4ECh. 11 - Prob. 5ECh. 11 - Prob. 6ECh. 11 - Prob. 7ECh. 11 - Prob. 8ECh. 11 - Prob. 9ECh. 11 - Prob. 10E
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