If T1 is L1 cache access time, T2 is L2 cache access time Tm is memory access time, h1 is hit rate for L1, and h2 is hit rate for L2 (0<=h1,h2<-1) What is the formula to calculate Average Memory Access Time?
If T1 is L1 cache access time, T2 is L2 cache access time Tm is memory access time, h1 is hit rate for L1, and h2 is hit rate for L2 (0<=h1,h2<-1) What is the formula to calculate Average Memory Access Time?
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Step 1
Derivation:
In cache memory, the average access time for single level cache organization is given by:
average memory access time = Hit Time + Miss Rate * Miss Penality
Where Hit Time = h(hit rate) * T(cache access time), Miss Rate = (1 - h) * Tm(Main memory access time)
which become, Tavg = h * T + (1 - h) Tm
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