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Preemptive priority scheduling algorithm problem

Prob. For the ahead jobs calculate the average turnaround time, waiting time and response time using  FCFS, preemptive priority scheduling and Round Robin (time quantum=1).

Job
Burst Time
Arrival Time
Priority
A
10
0
3
B
2
1
1
C
4
2
3
D
6
4
4
E
5
4
2


Which 1 has highest priority and 4 as the lowest priority?

Ans.


Preemptive priority scheduling :

Priority Scheduling:Average turnaround time

Priority Scheduling: Response time calculation


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