GATE - 2006 | OS | The arrival time, priority, and duration of the CPU and I/O bursts for
Posted on 18-02-2022
GATE - 2006 [Operating System]
Question:
The arrival time, priority, and duration of the CPU and I/O bursts for each of three processes P1, P2 and P3 are given in the table below. Each process has a CPU burst followed by an I/O burst followed by another CPU burst. Assume that each process has its own I/O resource.
The multi-programmed operating system uses preemptive priority scheduling. What are the finish times of the processes P1, P2 and P3 ?
|
A |
11, 15, 9 |
|
B |
10, 15, 9 |
|
C |
11, 16, 10 |
|
D |
12, 17, 11 |
Solution:
Option (B) is Correct.
Gantt-chart:
Hence, finish times of process.
P1 - 10
P2 - 11
P3 - 9