The following algorithm is used by a cache controller in order to take advantage of both temporal and spatial locality. Performance of cache memory is frequently measured in term of a quantity known as hit ratio. A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory.
Define cache memory.

when word is not found in cache, it is in main memory and it counts a miss.

n computing a small area of memory in a computer that can be accessed very quickly • Divide cache in two parts: On a cache miss, check other half of cache to see if data is there, if so have a pseudo-hit (slow hit) • Easiest way to implement is to invert the most significant bit of the index field to find other block in the “pseudo set”. And if it is not found than it is called miss. If CPU refers to memory and find the word in cache then it said to be a create hit. Cache definition : The Cache Memory (Pronounced as "cash") is the volatile computer memory which is very nearest to the CPU so also called CPU memory, all the Recent Instructions are Stored into the Cache Memory.It is the fastest memory that provides high-speed data access to a computer microprocessor.Cache meaning is that it is used for storing the input which is given by the user and …

We can improve Cache performance using higher cache block size, higher associativity, reduce miss rate, reduce miss penalty, and reduce Reduce the time to hit in the cache.

So hit ratio= the ratio of hits and the sum of hits and misses. Miss ratio= 1-hit … cache memory synonyms, cache memory pronunciation, cache memory translation, English dictionary definition of cache memory. if the requested data is in the local store // cache hit, cache access time return the requested data else // cache miss, lower-level access time get the requested and nearby data from the lower level save it in the local store return the requested data

• Drawback: CPU pipelining is hard to implement effectively if L 1 cache hit Hit ratio =hits /(hits+misses) When a cpu refers to memory and find it in cache than it is called hits.
Cache Mapping: There are three different types of mapping used for the purpose of cache memory which are as follows: Direct mapping, Associative mapping, and Set-Associative mapping. Compulsory miss: when a block of main memory is trying to occupy fresh empty line of cache and the very first access to a memory Block that must be brought into cache is called compulsory miss. Learn more. cache definition: 1. a hidden store of things, or the place where they are kept: 2. an area or type of computer….