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Eduncle posted an MCQ
February 21, 2020 • 20:11 pm 0 points
  • UGC NET
  • Computer Science & Applications

Consider a paging system where translation lookaside buffer (TLB) a special type of associative memory is used with hit ratio of 80%

Consider a paging system where translation lookaside buffer (TLB) a special type of associative memory is used with hit ratio of 80%
Assume that memory reference takes 80 nanoseconds and reference time to TLB is 20 nanoseconds. What will be the effective memory access time given 80% hit ratio?

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    Eduncle Best Answer

    Tavg = TLB access time + miss ratio of TLB × main memory access time + main memory access time
                = 20 + 0.2 × 80 + 80
                = 20 + 16 + 80
                = 116 ns

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