a write through cache coherency policy, will either of the above organizations make a difference in the amount of power used to do one write through operation (specifically above this cache layer, in the upper level memory structures to maintain coherency.

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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A cache is organized as a 4 way set associative cache

Each set's cache line consists of 4 words (meaning there are 16 bytes per line, for each set of the cache).

Each set individually has one Valid bit, and one Dirty bit, for each line.

The tag field of this cache is 8 bits wide.

The address is 32 bits wide.

If we have a write through cache coherency policy, will either of the above organizations make a difference in the amount of power used to do one write through operation (specifically above this cache layer, in the upper level memory structures to maintain coherency. The question is now saying which organization will result in a large number of operations, but when an operation is taking place would it matter what the structure was)?

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