a) Draw Gantt charts for the execution scenarios assuming: - FCFS scheduling - Non-preemptive SJF scheduling - Non-preemptive priority scheduling - Pure Round-Robin scheduling with the quantum = 3 b) What is the waiting time of each process in each case? c) What is the response time of each process in each case? d) What is the turn-around time of each process in each case?

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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Consider the following set of prioritized processes, where a smaller priority value represents a
higher priority.
Process
Service Time
Priority
20
3
1
15
1
2
21
3
3
7
4
12
2
Assume that all processes arrived at the same time, however they are inserted in the ready list
in the order indicated in the above table.
a) Draw Gantt charts for the execution scenarios assuming:
- FCFS scheduling
- Non-preemptive SJF scheduling
Non-preemptive priority scheduling
- Pure Round-Robin scheduling with the quantum = 3
b) What is the waiting time of each process in each case?
c) What is the response time of each process in each case?
d) What is the turn-around time of each process in each case?
Transcribed Image Text:Consider the following set of prioritized processes, where a smaller priority value represents a higher priority. Process Service Time Priority 20 3 1 15 1 2 21 3 3 7 4 12 2 Assume that all processes arrived at the same time, however they are inserted in the ready list in the order indicated in the above table. a) Draw Gantt charts for the execution scenarios assuming: - FCFS scheduling - Non-preemptive SJF scheduling Non-preemptive priority scheduling - Pure Round-Robin scheduling with the quantum = 3 b) What is the waiting time of each process in each case? c) What is the response time of each process in each case? d) What is the turn-around time of each process in each case?
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