Suppose that the following processes arrive for execution at the times indicated. Each process will run for the amount of time listed. In answering the questions, use non-preemptive scheduling, and base alldecisions on the information you have at the time the decision must be made.ProcessArrival TimeBurst TimeP10.09P20.46P30.64P41.02 What is the average turnaround time for these processes with the FCFS scheduling algorithm?What is the average turnaround time for these processes with the SJF scheduling algorithm?The SJF algorithm is supposed to improve performance, but notice that we chose to run process P1 at time 0 because we did not know that three shorter processes would arrive soon. Compute what the average turnaround time will be if the CPU is left idle for the first 1 unit and then SJF scheduling is used. Remember that processes P1, P2, P3 are waiting during this idle time, so their waiting time may increase.

Process Arrival Time (AT) Burst Time(BT) Completion time (CT) Turn Around time(CT-AT) P1 0.0…

Answered: Suppose that the following processes…

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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Suppose that the following processes arrive for execution at the times indicated. Each process will run for the amount of time listed. In answering the questions, use non-preemptive scheduling, and base all
decisions on the information you have at the time the decision must be made.

Process	Arrival Time	Burst Time
P1	0.0	9
P2	0.4	6
P3	0.6	4
P4	1.0	2

What is the average turnaround time for these processes with the FCFS scheduling algorithm?
What is the average turnaround time for these processes with the SJF scheduling algorithm?
The SJF algorithm is supposed to improve performance, but notice that we chose to run process P1 at time 0 because we did not know that three shorter processes would arrive soon. Compute what the average turnaround time will be if the CPU is left idle for the first 1 unit and then SJF scheduling is used. Remember that processes P1, P2, P3 are waiting during this idle time, so their waiting time may increase.

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