# HW3_su21.pdf

CS 5500 Advanced Operating Systems

Homework #3

Please refer to the syllabus for expectations of homework professionalism

and appearance. Your homework is expected to be an individual effort. It is

also expected to be neat and clearly organized. The University provides

access to many software applications. Use them. Hand written papers and

poorly drawn diagrams are not acceptable. You must submit the softcopy of

your homework in a Word file by the specified due date and time. You can

find the submission link in the Blackboard.

This homework is due: June 7, 2021, 11:59 PM

Total points: 16

The cover page of your homework will contain only the following

information in the format given below:

Name:

E-mail:

Course #: CS 5500

Homework #: Homework 3

Semester: Summer 2021

1. [4 pts] In the priority scheduling, if a priority can be represented using 10 bits and the

priority of a waiting process gradually increases by 1 every 1 minute, then what would be

the maximum waiting time of the lowest priority process?

2. [6 pts] Given the following information:

Process: A B C D E F

Arrival Time: 0 2 4 6 8 10

CPU Burst: 3 6 4 8 5 7

Draw a Gantt chart that illustrate the execution of these processes using FCFS, SJF, and RR

(quantum = 2, ignoring context switching overhead). Compute the average waiting time and

average turnaround time for each scheduling algorithm.

3. [6 pts] Given the following information:

Process: A B C D E F

Arrival Time: 0 1 2 3 4 5

CPU Burst: 6 3 2 7 5 9

Draw a Gantt chart that illustrate the execution of these processes using FCFS, SJF, and RR

(quantum = 1, ignoring context switching overhead). Compute the average waiting time and

average turnaround time for each scheduling algorithm.

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