What is cache memory PPT?

Cache is divided into a number of sets Each set contains a number of lines A given block maps to any line in a given set e.g. Block B can be in any line of set i 2 way associative mapping A given block can be in one of 2 lines in only one set.

What is cache memory PDF?

Cache memory is one of the fastest memories inside a computer which acts as a buffer or mediator between CPU and Memory (RAM). When CPU requires some data element it goes to Cache and it that data element is present in cache, it fetches it; otherwise, cache controller requests the data from memory.

What is cache memory in computer?

Cache is the temporary memory officially termed “CPU cache memory.” This chip-based feature of your computer lets you access some information more quickly than if you access it from your computer’s main hard drive.

How is cache performance measured?

Another useful metric to test the performance is Power law of cache misses. It gives you the number of misses when you change the size of the cache, given that the number of misses for one of the cache sizes is known.

How does cache memory affect computer performance?

Cache memory holds frequently used instructions/data which the processor may require next and it is faster access memory than RAM, since it is on the same chip as the processor. This reduces the need for frequent slower memory retrievals from main memory, which may otherwise keep the CPU waiting.

How does cache improve performance?

The more cache there is, the more data can be stored closer to the CPU. Cache memory is beneficial because: Cache memory holds frequently used instructions/data which the processor may require next and it is faster access memory than RAM, since it is on the same chip as the processor.

How do I choose a cache size?

Within these hard limits, the factors that determine appropriate cache size include the number of users working on the machine, the size of the files with which they usually work, and (for a memory cache) the number of processes that usually run on the machine.