Calculate the average response time for these processes with nonpreemptive priority Scheduling algorithm? Priority of the process are as follows and consider that all the processes came at zero (0) time. (Note low numbers represent high priority).

1. A5.6 ms
2. B5.2 ms
3. C4.7 ms
4. D3.8 ms

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Correct answer: A. 5.6 ms

Explanation

All at time 0, by priority: P2 (0–3), P5 (3–4), P1 (4–9), P4 (9–12), P3 (12–14). Response times 0, 3, 4, 9, 12 sum to 28; average 28/5 = 5.6 ms.