Calculate the access time when there is cache miss? suppose, Ask an Expert

Engineering

A single level cache has following specifications.

Access time = 2.5 ns
Line size = 64 bytes
Hit ratio = 0.95

Main memory uses the block transfer capability, and has first word (4 bytes) access time of 50 ns and access time for following words as 5 ns.

Calculate the access time when there is cache miss? Suppose that cache waits until line has been fetched from main memory and then re-executes for a hit.

Will increasing line size to 128 bytes, and resulting increase in H (hit ratio) to .97, decrease average memory access time?

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