Consider a uniprocessor system where new processes arrive at an average of five processes per minute and each process needs an average of 6 seconds of…
Consider a uniprocessor system where new processes arrive at an average of five processes per minute and each process needs an average of 6 seconds of service time. What will be the CPU utilization?
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Correct answer: (B) 50%
Explanation
New processes arrive at 5 per minute, i.e. one process every 60/5 = 12 seconds. Each process needs 6 seconds of service time. CPU utilization = (total service time required / total available time) × 100 = (6/12) × 100 = 50%. Hence the right option is (b).