Question

Calculate the effective access time for a system with 80% tlb hit ratio, 15 ns for searching tlb, 100 ns main memory access time

Answer 1

Answer:

an 80 percent hit ratio, for example hit ratio hit. for example means that we find the desired page number in

nanoseconds to access memory to access memory than a mapped memory access takes 100 nanoseconds when the page number is the TLB

Answer 2

Explanation:

Suppose

TLB lookup takes 5 nano second

Memory access time is 100 nano second

Hit ration is equal to

Effective Access Time is equal to (5+100) X ? + (5+100+100) x (1-?)

Suppose? Is equal to 80% TLB is equal to 16 in size

Effective Access Time is equal to 105 x.8 + 205X.2 = 125 nano second

Suppose ? is equal to 98% (TLB size is 64)

Effective Access Time is equal to 105x.98 + 205x.02 = 107 nano second.

Likewise you can do with the given equation.