Question
Consider the following memory hierarchies: System A: Access Times o Cache: 2ns o Main Memory: 20ns o Disk: 10ms Hit Rate: o Cache:
Consider the following memory hierarchies:
System A: • Access Times o
Cache: 2ns o
Main Memory: 20ns o
Disk: 10ms •
Hit Rate: o
Cache: .95 o
Main Memory: .60 o
Disk:
1 a. What is the average memory access time for this memory hierarchy?
b. If we improved disk access time by 100% (making it 5ms), how would that affect the average memory access time?
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Computer Organization and Design The Hardware Software Interface
Authors: David A. Patterson, John L. Hennessy
5th edition
124077269, 978-0124077263
