Question

if chr is the cache hit ratio, then the average memory access time is

Answer 1

Explanation:

Collenchyma tissue is composed of elongated cells with irregularly thickened walls. They provide structural support, particularly in growing shoots and leaves. Collenchyma tissue makes up things such as the resilient strands in stalks of celery.

Answer 2

Answer:

Effective memory access time= hit rate *cache access time+(1- hit rate)*memory access time

=chr* cache access time+(1-chr)*memory access time.

Explanation:

The  average memory access time is given by the following formula-

EMAT=hit ratio*cache access time+miss ratio* lower level cache access time

Let us suppose that a word/block is searched in cache and it was found there so cache hit will occur and if suppose the word is not there, so cache miss will occur and that particular word/block will be searched in lower level cache. Suppose there is only one cache and after that main memory in which the word is searched.

so the above formula can be modified as follows-

Effective memory access time= hit rate *cache access time+(1- hit rate)*memory access time

=chr* cache access time+(1-chr)*memory access time. In the formula chr is the cache hit ratio.