0 votes 0 votes Operating System page-fault operating-system effective-memory-access page-replacement page + – gourav94240 asked Oct 19, 2018 gourav94240 1.5k views answer comment Share Follow See all 15 Comments See all 15 15 Comments reply Show 12 previous comments Dharmendra Lodhi commented Oct 19, 2018 reply Follow Share magma why you are not taking memory accessing time after tlb hit, because in tlb only address will be found then have to access memory also. 0 votes 0 votes Magma commented Oct 19, 2018 reply Follow Share Dharmendra Lodhi thanks 0 votes 0 votes Dhawal S 1 commented Dec 6, 2018 reply Follow Share @Magma @Dharmendra Lodhi Is the answer 702 or 108. I too got 702. Please tell me. 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes Answer 702 I have learn many places 2nd is more accurate formula Ram Swaroop answered Jul 1, 2019 Ram Swaroop comment Share Follow See all 2 Comments See all 2 2 Comments reply Ashutosh777 commented Jul 9, 2020 reply Follow Share there are many ques based on this: https://gateoverflow.in/238144/test-series https://gateoverflow.in/333178/gate2020-cs-53 its always an ambiguity 0 votes 0 votes Ashutosh777 commented Jul 9, 2020 reply Follow Share 1-h[p*(t+PS+m)+1-p(t+m+m)]=TLB MISS h*(t+m)=TLB HIT add both of them to get the ans. h=tlb hit rate,p=page fault rate,m=memory access,PS=page fault service time in case of tlb miss two cases possible: case a: page fault occurs(this means our page is not in the main memory itself) Now in this case we will first service the page fault(assuming PS includes memory access time also) NOTE:here we have added t+m(this is time wasted during tlb miss) case b:no page fault(means our page is in the main memory we can directly access it using one memory access) here also we have added t+m time wasted in tlb miss. https://gateoverflow.in/669/gate2000-2-22(here arjun sir assumed memory access time is included in page fault service time,(see sachin mittal sir comment also)) https://gateoverflow.in/278928/self-doubt-effective-memory-access-time(see this discussion) 0 votes 0 votes Please log in or register to add a comment.