7. Disk requests are received by a disk drive forcylinders 5, 25, 18, 3, 39, 8 and 35 in thatorder. 4 seek takes 5 msec per cylindermoved. How much seek time is needed toserve these requests for a shortest seek first(SSF) algorithm? Assume that the arm is atcylinder 20 when the last of these requests ismade with name of the requests yet served.

Operating systems use a disk scheduling algorithm to schedule I/O requests that arrive at the disk.…

Disk requests are received by a disk drive for cylinders 5, 25, 18, 3, 39, 8 and 35 in that order. 4 seek takes 5 msec per cylinder moved. How much seek time is needed to cerve these requests for a shortest seek first SSF) algorithm? Assume that the arm is a ylinder 20 when the last of these requests ade with name of the requests yet served

Disk requests are received by a disk drive for cylinders 5, 25, 18, 3, 39, 8 and 35 in that order. 4 seek takes 5 msec per cylinder moved. How much seek time is needed to cerve these requests for a shortest seek first SSF) algorithm? Assume that the arm is a ylinder 20 when the last of these requests ade with name of the requests yet served

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

Problem 1PE

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