Using Non-Preemptive SJF Scheduling, find the Turnaround Time (TAT) for P3.…
2025
Using Non-Preemptive SJF Scheduling, find the Turnaround Time (TAT) for P3.
Question data:
P1: arrival time 0, burst time 6 units
P2: arrival time 0, burst time 2 units
P3: arrival time 0, burst time 4 units
- A.
2 units
- B.
4 units
- C.
6 units
- D.
8 units
- E.
10 units
Attempted by 52 students.
Show answer & explanation
Correct answer: C
Correct answer: 6 units.
All processes arrive at time 0, so non-preemptive SJF runs the shortest burst first: P2 for 2 units, then P3 for 4 units, then P1.
P3 completes at time 2 + 4 = 6. Since arrival time is 0, TAT for P3 = 6 - 0 = 6 units.