b) Consider a disk queue with requests for I/O to blocks on cylinders 108, 193, 51, 132,  24, 134, 75, 77. The head is initially at cylinder number 63. The cylinders are  numbered from 0 to 199.  Find out the total head movements using the following algorithms a) First Come-First Serve (FCFS) b) Shortest Seek Time First (SSTF) c) Elevator (SCAN) d) Circular LOOK (C-LOOK)b) Consider a disk queue with requests for I/O to blocks on cylinders 108, 193, 51, 132, 24, 134, 75, 77. The head is initially at cylinder number 63. The cylinders are numbered from 0 to 199. Find out the total head movements using the following algorithms a) First Come-First Serve (FCFS) b) Shortest Seek Time First (SSTF) c) Elevator (SCAN) d) Circular LOOK (C-LOOK)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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b) Consider a disk queue with requests for I/O to blocks on cylinders 108, 193, 51, 132, 

24, 134, 75, 77. The head is initially at cylinder number 63. The cylinders are 

numbered from 0 to 199. 

Find out the total head movements using the following algorithms

a) First Come-First Serve (FCFS)

b) Shortest Seek Time First (SSTF)

c) Elevator (SCAN)

d) Circular LOOK (C-LOOK)b) Consider a disk queue with requests for I/O to blocks on cylinders 108, 193, 51, 132,
24, 134, 75, 77. The head is initially at cylinder number 63. The cylinders are
numbered from 0 to 199.
Find out the total head movements using the following algorithms
a) First Come-First Serve (FCFS)
b) Shortest Seek Time First (SSTF)
c) Elevator (SCAN)
d) Circular LOOK (C-LOOK)

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