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5 cards from this section. Quick, good the night before a test.
Define cache hit.
Think about when the data request is successful.
What is a cache miss?
Consider what happens when a request fails.
What is a cache hit?
Remember what hit indicates regarding data retrieval.
True or False: A cache miss occurs when the data is found in cache.
Think about the definitions you've learned.
A processor operating on a hit ratio of 0.90 experiences 100,000 memory accesses. How many cache hits and misses does it encounter?
Use the definitions of hit and miss ratios to calculate.
If a system has a miss penalty of 20 milliseconds, and 10% of memory accesses result in misses, what is the average time lost due to cache misses for 100,000 memory accesses?
Think about how to calculate total time lost based on misses and penalties.
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