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Ch3 效能評估（Performance）
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34. Performance Evaluation、Amdahl's Law、CPI
#CC-03-034
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Performance Evaluation
Amdahl's Law
CPI
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Which of the following statements are true regarding performance evaluation?
A
Throughput refers to the time a system takes to process a request after receiving it.
B
If a CPU's clock rate is an integer, its cycles per instruction (CPI) must also be an integer.
C
If a component accounts for 30% of the total execution and we shrink the execution time of this component to half, the total execution time becomes 85% of the original execution time.
D
In a multi-threading environment, CPU time could be higher than the elapsed time.
E
None of the above.
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