The performance of a hierarchical memory is measured by its effective access time (EAT) or the average time per access. EAT is a weighted estimate which is dependent on the memory hierarchy. We have a...

The performance of a hierarchical memory is measured by its effective access time (EAT) or the average time per access. EAT is a weighted estimate which is dependent on the memory hierarchy.

We have a hypothetical machine with two levels in its memory hierarchy: cache, and main memory with the following attributes:

Cache hit rate: 85%

Cache access time : 15ns

Main memory access time: 100 ns

what is the EAT using overlapped access?

What is the EAT using non-overlapped access?