In a computer system, memory mapped access takes 100 nanoseconds when a page is found in TLB. In case the page is not TLB, it takes 400 nanoseconds to…
In a computer system, memory mapped access takes 100 nanoseconds when a page is found in TLB. In case the page is not TLB, it takes 400 nanoseconds to access. Assuming a hit ratio of 80%, the effective access time is:
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Correct answer: (B) 160 nanoseconds
Explanation
EAT = 0.8 × 100 + 0.2 × 400 = 80 + 80 = 160 ns.