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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
Chapter1: Introduction
Section: Chapter Questions
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Suppose the following disk request sequence
(track numbers) for a disk with 200 tracks ( 0 to
199 ) is given: 98, 183, 37, 122, 14, 124, 65, 67.
Assume that the initial position of the R/W head
is on track 53. The additional distance that will
be traversed by the R/W head when the First
Come First Serve (FCFS) (SSTF) algorithm is
used compared to the Shortest Seek Time First
algorithm is
tracks.
Transcribed Image Text:Suppose the following disk request sequence (track numbers) for a disk with 200 tracks ( 0 to 199 ) is given: 98, 183, 37, 122, 14, 124, 65, 67. Assume that the initial position of the R/W head is on track 53. The additional distance that will be traversed by the R/W head when the First Come First Serve (FCFS) (SSTF) algorithm is used compared to the Shortest Seek Time First algorithm is tracks.
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