b) Make Gantt chart and find average waiting time using Non-Preemptive Priority Scheduling method for the following processes, with the length of the CPU burst given in milliseconds along with priority: Process CPU Burst Priority Time P1 2 P2 12 4 P3 1 5 P4 3 1 P5 4 3

b) Make Gantt chart and find average waiting time using Non-Preemptive Priority Scheduling method for the following processes, with the length of the CPU burst given in milliseconds along with priority: Process CPU Burst Priority Time P1 2 P2 12 4 P3 1 5 P4 3 1 P5 4 3

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

b) Make Gantt chart and find average waiting time using Non-Preemptive Priority
Scheduling method for the following processes, with the length of the CPU burst
given in milliseconds along with priority:
Process
CPU Burst
Priority
Time
P1
2
P2
12
4
P3
1
P4
1
P5
4
3
3.

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3. Consider the following table. Process Arrival time Priority CPU I/O СPU P1 2 10 20 P2 4 1 15 10 P3 6 3 10 5 Draw the Gantt chart of CPU and I/O if, b) CPU is scheduled by RR with quantum=5ms and I/O scheduling is by preemptive-priority. Priority is highest at level 3 and lowest at level 1.
Consider the following set of processes with the length of next CPU burst given in milliseconds:P1 - 8 ms, P2 - 2 ms, P3 - 15 ms, P4 - 5 ms: a) Draw the Gantt chart illustrating the execution of these processes using the NON-preemptive Shortest Job First scheduling algorithm, and calculate the average waiting time. b) Knowing the arrival time: P1-0, P2-3, P3-5, P4-7, draw the Gantt chart and calculate the average waiting time for the equivalent pre-emptive algorithm, the Shortest Remaining Time First scheduling algorithm. c) Compare the number of context switches of the two scheduling algorithms:- How many context switches do you have in the 1st and in the 2nd algorithm?- Which is the best one?
Question 9 2. Consider the following processes with arrival time and burst time. Draw a Gantt chart for preemptive priority- based CPU scheduling algorithm (dispatch delay o=1, the highest number means the highest priority, in case of the same priority, FCFSalgorithm will be used to break the tie.) find efficiency ( Process Arrival Burst ID Priority time time P1 3 P3 15 18 16 P5 10 10 P4 12 12 P2 3 15 10 Efficiency =
Process Burst Time Priority P1 6 3 P2 1 P3 P4 4 P5 3 The processes are assumed to have arrived in the order P1, P2, P3, P4, P5 all at time e. a. Draw four Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, non- preemptive SJF, non-preemptive priority (a larger priority number implies a higher priority)and RR (quantum = 2). b. What is the turnaround time of each process for each of the scheduling algorithms in part a? c. What is the waiting time of each process for each of these scheduling algorithms? d. Which of the algorithms results in the minimum average waiting time (over all processes 2. 2. 5. 4)
3. Apply Round Robin Scheduling algorithm to find out the Average Waiting Time, Average Turnaround time using the information given below. Time slice 24 msecs. Process CPU burst time (msec) 106 122 66 98
Suppose that we have the table below that includes four processes with their Arrival times and Burst times, and a Round Robin of time quantum 1 millisecond to be used for CPU scheduling. Answer the following questions: Process Arrival CPU-burst ID time time P1 0 1 P2 3 3 P3 2 4 P4 4 3 Completion Time Response Turn Around Time Time Waiting Time a. Draw the Gantt chart. b. Complete the above table. c. Calculate the average waiting time.
Consider the following set of processes, with the length of the CPU burst given in milliseconds: Process P1 P2 P3 P4 P5 Burst Time 5 3 1 7 4 Priority 4 1 2 2 3 The processes are assumed to have arrived in the order P1, P2, P3, P4, P5, all at time 0. b) What is the turnaround time of each process for each of the scheduling algorithms in part a? c) What is the waiting time of each process for each of these scheduling algorithms?
Make Gantt chart 2. Solve it using round Robin scheduling Find the average waiting