Five batch jobs, A, B, C, D, and E, arrive at a computer system at time 0, 1, 2, 3, 4, respectively. And they have service time of 7. 1, 3, 5, and 4, respectively. The new jobs arrive a little ahead of the expiration of time slices. For each of the following scheduling algorithms, determine the turnaround time for each process for all jobs. Ignore process switching overhead. . SRT: Shortest remaining time, a preemptive algorithm (preemption points are whenever a new process arrives) HRRN: Highest response ratio next: non-preemptive FCFS: first come first serve. non-non-preemptive SPN: Shortest process next, non-non-preemptive Secondary Scheduling Policy: FCFS, if the first policy cannot identify the next process, FCFS will be used. . . . RR: Round robin with a time quantum of 2 units. The new processes arrive before the time quantum expires. • Feedback: preemptive, multilevel feedback, when a process has time quantum expires, OS will feed it back into a lower- priority queue, with time quantum extended to 2¹. . Determine the turnaround time Tr RR, q=1 Tr SPN T A B C D E

Five batch jobs, A, B, C, D, and E, arrive at a computer system at time 0, 1, 2, 3, 4, respectively. And they have service time of 7. 1, 3, 5, and 4, respectively. The new jobs arrive a little ahead of the expiration of time slices. For each of the following scheduling algorithms, determine the turnaround time for each process for all jobs. Ignore process switching overhead. . SRT: Shortest remaining time, a preemptive algorithm (preemption points are whenever a new process arrives) HRRN: Highest response ratio next: non-preemptive FCFS: first come first serve. non-non-preemptive SPN: Shortest process next, non-non-preemptive Secondary Scheduling Policy: FCFS, if the first policy cannot identify the next process, FCFS will be used. . . . RR: Round robin with a time quantum of 2 units. The new processes arrive before the time quantum expires. • Feedback: preemptive, multilevel feedback, when a process has time quantum expires, OS will feed it back into a lower- priority queue, with time quantum extended to 2¹. . Determine the turnaround time Tr RR, q=1 Tr SPN T A B C D E

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Description: Five batch jobs, A, B, C, D, and E, arrive at a computer system at time 0, 1, 2, 3, 4, respectively. And they have service time of 7,1, 3, 5, and 4, respectively. The new jobs arrive a little ahead of the expiration of time slices. For each of the f

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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