Consider a uniprocessor system where new processes arrive at an average of…
2014
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 ?
- A.
80 %
- B.
50 %
- C.
60 %
- D.
30 %
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Correct answer: B
Solution:
Use the formula for CPU utilization:
ρ = arrival rate × service time
Arrival rate = 5 processes per minute.
Service time = 6 seconds = 6/60 = 0.1 minute.
Compute utilization: ρ = 5 × 0.1 = 0.5 = 50%.
Therefore, the CPU utilization is 50%.
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