TestBook Test Series

Question

Assume a sequence of memory accesses is made that have a high degree of temporal locality, which one of these cache would be likely to have the best performance?

• A 4-way set associative cache with 2-byte blocks

• A 2-way set associative cache with 4-byte blocks

• A direct mapped cache with 4-byte blocks

• A direct mapped cache with 8-byte blocks

Answer 1

To have high temporal locality the data should be retained longer. Temporal locality means that a data accessed has a high probablity of being accessed again. So to maximize temporal locality we have to ensure that the data is not replaced with another block. And comparing the given cache configurations I think 4-way associative cache with 2 byte blocks is the best choice.

Comments

i too think the same..;-)