The cache is a very fast copy of the slower main system Have an understanding of how the cache in their systems To write efficient code developers need to The reason caches are effective is because computer codeĬache is one of the most important elements of the CPUĪrchitecture. Of course, if you can find a way toĬhange this equation, you'll end up a billionaire! The trade offs between speed and size - the faster the The important point to know about the memory hierarchy is Heads means disks are the slowest form of storage.īut they are also by far the largest form of Physical mechanisms such as spinning disks and moving Program can take to load from the hard disk - having We are also familiar with the long time a We are all familiar with software arriving on aįloppy disk or CDROM, and saving our files to the hardĭisk. Meaning it is much larger than cache memory. Separate, dedicated chips attached to the motherboard, Although RAM is veryįast, there is still some significant time taken for In fact, there are several sub-levels ofĬache memory (termed L1, L2, 元) all with slightlyĪll instructions and storage addresses for the Only once cycle to access, but since it is embeddedĭirectly into the CPU there is a limit to how big itĬan be. Cache memory is very fast, typically taking \)Ĭache memory is memory actually embedded inside
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