=ctively. Cac s and main miss occu the main m rates 60% v

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Consider a cache memory having the hit ratios
for read and write operations are 70% and 80%
respectively. Cache memory access time is
100ns and main memory access time is 800ns.
When miss occurs then 4 word block is copied
from the main memory to cache memory. CPU
generates 60% write requests and remaining are
used for read operations. What is the throughput
(or) bandwidth of the cache in terms of million
words/sec using Write back policy?
Transcribed Image Text:Consider a cache memory having the hit ratios for read and write operations are 70% and 80% respectively. Cache memory access time is 100ns and main memory access time is 800ns. When miss occurs then 4 word block is copied from the main memory to cache memory. CPU generates 60% write requests and remaining are used for read operations. What is the throughput (or) bandwidth of the cache in terms of million words/sec using Write back policy?
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