Practice Example Calculation Of Cpi (16.1.2) - Performance Factor of Paging and Caching

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6 sample questions

Question 1.
Define CPI in your own words.
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Think about it in terms of executing instructions.
Question 2.
What does a miss rate indicate?
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What happens if you can't find something in memory?
3Question 3.
What is CPI?
- A measure of clock speed
- Cycles Per Instruction
- A type of memory
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Remember, it's related to how instructions are executed.
4Question 4.
True or False: A higher miss rate generally improves CPU performance.
- True
- False
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Think about the impact on waiting time.
Question 5.
Consider a system with a clock rate of 1 GHz and a base CPI of 2. If the miss rate is 5% with a miss penalty of 40 cycles, calculate the effective CPI.
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Use the formula relating base CPI to miss rate.
Question 6.
If a CPU has a miss rate of 20% and a miss penalty of 100 cycles, how does this impact the effective CPI if the base CPI is 1.5?
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Remember to multiply the miss rate with the miss penalty.

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