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The traditional UNIX scheduler enforces an inverse relationship betweenpriority numbers

Operating System Concepts | 9th Edition | ISBN: 9781118063330 | Authors: Abraham Silberschatz, Peter B. Galvin, Greg Gagne ISBN: 9781118063330 327

Solution for problem 6.9 Chapter 6

Operating System Concepts | 9th Edition

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Operating System Concepts | 9th Edition | ISBN: 9781118063330 | Authors: Abraham Silberschatz, Peter B. Galvin, Greg Gagne

Operating System Concepts | 9th Edition

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Problem 6.9

The traditional UNIX scheduler enforces an inverse relationship betweenpriority numbers and priorities: the higher the number, the lower thepriority. The scheduler recalculates process priorities once per secondusing the following function:Priority = (recent CPU usage / 2) + basewhere base = 60 and recent CPU usage refers to a value indicating howoften a process has used the CPU since priorities were last recalculated.Assume that recent CPU usage is 40 for process P1, 18 for process P2,and 10 for process P3. What will be the new priorities for these threeprocesses when priorities are recalculated? Based on this information,does the traditional UNIX scheduler raise or lower the relative priorityof a CPU-bound process?

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Chem Study Guide Chapters 1 & 2 1.1 Chemistry- the study of matter and energy and the changes they undergo Matter- anything that has mass and occupies volume (space). 1.2 States of Matter solid- particles packed tightly together. Has a definite shape and a definite volume. liquid- particles are more spaced out. Has an indefinite shape and a...

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Chapter 6, Problem 6.9 is Solved
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Textbook: Operating System Concepts
Edition: 9
Author: Abraham Silberschatz, Peter B. Galvin, Greg Gagne
ISBN: 9781118063330

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The traditional UNIX scheduler enforces an inverse relationship betweenpriority numbers

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