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A three level memory system having cache access time of 15 ns and disk access time of 80 ns has a cache hit ratio of 0.96 and main memory hit ratio of 0.9. What should be the main memory access time to achieve effective access time of 25 ns?
in CO & Architecture by (73 points) | 17 views
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242 ns??
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No , I also found the answer 242, but they have given answer is 27.

Don't know how they have approached,and which formula they have used.

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