Computer Sciences > Gate 2018 > Demand Paging
Consider a process executing on an operating system that uses demand paging. The average time for a memory access in the system is M units if the corresponding memory page is available in memory, and D units if the memory access causes a page fault. It has been experimental measured that the average time taken for a memory access in the process is X units. Which one of the following is the correct expression for the page fault rate experienced by the process?
A
(D - M)/(X - M)
B
(X - M)/(D - M)
C
(D - X)/(D - M)
D
(X - M)/(D - X)

Correct : Demand Paging

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page fault rate expression demand paging system computer science gate 2018 page fault calculation memory access time GATE computer sciences 2018 average memory access time page fault probability

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