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Computer Engineering
A computer has a cache memory and a main memory with the following features: Memory cache access time: 4 ns Main memory access time: 80 ns The time needed to load a line in cache is 120 ns. Write-through policy. If the hit ratio in this computer is 95 % and the 90% of the memory accesses are read operations, what is the average access time?

A computer has a cache memory and a main memory with the following features: Memory cache access time: 4 ns Main memory access time: 80 ns The time needed to load a line in cache is 120 ns. Write-through policy. If the hit ratio in this computer is 95 % and the 90% of the memory accesses are read operations, what is the average access time?

Computer Networking: A Top-Down Approach (7th Edition)
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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1. A computer has a cache memory and a main memory with the following features: Memory cache access time: 4 ns Main memory access time: 80 ns The time needed to load a line in cache is 120 ns. Write-through policy. If the hit ratio in this computer is 95 % and the 90% of the memory accesses are read operations, what is the average access time?
Transcribed Image Text:1. A computer has a cache memory and a main memory with the following features: Memory cache access time: 4 ns Main memory access time: 80 ns The time needed to load a line in cache is 120 ns. Write-through policy. If the hit ratio in this computer is 95 % and the 90% of the memory accesses are read operations, what is the average access time?
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