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https://gateoverflow.in/2122/gate2011-20-ugcnet-june2013-ii-48

in the solution why memory access is not considered along with page fault service time when a page fault occurs? Because after page fault the page has to be brought into the memory which needs memory access

asked in Operating System by Active (2.4k points) | 30 views

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Consider the EMAT= PageFaultRate(PageFaultServiceTime + Memory Access)+(1-PageFaultRate)*MemoryAccess--->here the memory access time is considered after servicing a page fault

But if we expand the formula

EMAT=PFR(PFST) + PFR*MA +MA -PFR*MA--->so cancel out the terms

EMAT=PFR(PFST) + MA

Now if you solve the given question then answer will be 30ns.
answered by (259 points)

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