Answered: Suppose that a system has only one CPU…

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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Question

Suppose that a system has only one CPU with the following list of processes, which are
represented by (proc-id, arrival time, required CPU time):
(A, 0, 4), (B, 0, 2), (C, 1, 2), (D, 5, 3), (E, 6, 1)

Show the Gantt chart schedule of these processes for the following scheduling algorithms:

First in first out (FIFO):

Non-preemptive shorted job first (SJF);

Preemptive shorted remaining time job first (SRJF);

b) Calculate the CPU utilization and average wait time for above three scheduling algorithms.

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