What is cache hit ratio?

Cache hit ratio is a measurement of how many content requests a cache is able to fill successfully, compared to how many requests it receives. For example, if a CDN has 39 cache hits and 2 cache misses over a given timeframe, then the cache hit ratio is equal to 39 divided by 41, or 0.951.

What determines high hit rate of cache memory?

Which of the following determines a high hit rate of the cache memory? Explanation: The size of the cache increases, a large amount of data can be stored, which can access more data which in turn increases the hit rate of the cache memory.

What is cache hit and cache miss in the cache management?

A cache miss is an event in which a system or application makes a request to retrieve data from a cache, but that specific data is not currently in cache memory. Contrast this to a cache hit, in which the requested data is successfully retrieved from the cache. more than just caching without adding complexity.

Does higher cache size guarantee higher hit rate?

cache size The graph above, Fig 6. clearly shows increasing interest as the hits rate increases as long as the cache size is increasing. On the other hand, even though the maximization of the cache size is taken advantage of with high hits rate, there is the drawback of the increase of the cache size.

Which data are found in the cache hit ratio it is called as?

The percentage of accesses that result in cache hits is known as the hit rate or hit ratio of the cache. The alternative situation, when the cache is checked and found not to contain any entry with the desired tag, is known as a cache miss.

Does increasing cache size increase hit rate?

As a matter of fact, an increased cache size is going to lead to increased interval time to hit in the cache as we can observe that in Fig 7. Now, the implementation cost must be taken care of. There must be a tradeoff between cache size and time to hit in the cache.

How does the size of cache block affect the hit ratio?

The performance of cache memory is frequently measured in terms of a quantity called Hit ratio. We can improve Cache performance using higher cache block size, higher associativity, reduce miss rate, reduce miss penalty, and reduce the time to hit in the cache.