Problem

Consider a system with memory mapping done on a page basis and using a singlelevel page ta...

Consider a system with memory mapping done on a page basis and using a singlelevel page table. Assume that the necessary page table is always in memory

a. If a memory reference takes 200 ns, how long does a paged memory reference

take?

b. Now we add an MMU that imposes an overhead of 20 ns on a hit or a miss. If we assume that 85% of all memory references hit in the MMU TLB, what is the Effective Memory Access Time (EMAT)?

c. Explain how the TLB hit rate affects the EMAT.

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Solutions For Problems in Chapter 8