Question
Suppose the head of a moving-head disk with 200 tracks numbered 0 to 199 is currently serving a request at track 100 and has just
Suppose the head of a moving-head disk with 200 tracks numbered 0 to 199 is currently serving a request at track 100 and has just finished a request at track 105. The queue of outstanding requests in FIFO order is:
70, 80, 110, 170, 180, 50, 150
What is the total number of head movements (in cylinders) for the SSTF disk-scheduling algorithms?
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Database Systems For Advanced Applications 15th International Conference Dasfaa 2010 International Workshops Gdm Benchmarx Mcis Snsmw Diew Udm Tsukuba Japan April 2010 Revised Selected Papers Lncs 6193
Authors: Masatoshi Yoshikawa ,Xiaofeng Meng ,Takayuki Yumoto ,Qiang Ma ,Lifeng Sun ,Chiemi Watanabe
2010th Edition
3642145884, 978-3642145889
