Cache

Question

Please tell what happens to hit rate, hit time, compulsory miss rate, conflict miss rate, capacity miss rate, miss time on :
1. Increasing Cache size
2. Increasing Block size
3. Increasing number of lines
4. Increasing Associativity

Comments

if you increase cache size

hit rate :- increases , since there can be more elements in cache so chance of getting desired element increases.

hit time :- increases, since there can be more elements in cache so search time increases.

compulsary miss :- no effect.

capacity miss - decreases. since there can be more elements in cache.

conflict miss :- will depend type of cache.

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Larger block size improve spatial locality. So, Compulsory miss reduced

But larger block size , then less number of block in cache. So, conflict miss increases

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https://courses.cs.washington.edu/courses/cse378/02sp/sections/section9-2.html

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@srestha wrong