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Graded Discussion board

 

GDB of CS604 will be conducted on Thursday, 07 February, 2019. It will remain open for two days.

 

GDB Topic

Consider a situation in which system is using demand paging technique to load pages from Swap Space to Main Memory. Let’s suppose that a process needs to be loaded in Main Memory. Initially, there are no pages of that process in Main Memory and no free frames are available in main memory.

In that situation, which technique will be used so that process can be loaded in the main memory without affecting the degree of multi-programming and either the page fault rate will increase or decrease thereby increasing or decreasing the performance of system?  

You are required to give your own opinion. Keep your answer precise and to the point and should not exceed 6 to 8 lines.

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Replies to This Discussion

any Idea guys?

well first of all we have to read Demand Paging in Lecture 38 and watch that lecture as well.

plz gdb share

so page replace technique will be use to get pages from disk into main main memory.

What about page fault rate?

will page fault increases or decreases what you think kalimullah?

so far what i studied. page fault rate will decrease.

CS604 GDB solution IDEA

Page Fault and Page Replacement Technique | demand paging | CS604 GDB

https://youtu.be/zyd5GgFWSY0

how ?
how page fault decreases ? Kalimullah give some suggestions

Good page replacement algo will decrease the chances of page fault hence page fault rate will decrease

???

Watch lecture 39 at 25 min nto 30 min to find out how page fault rate reduce

Kalimullah Watch at 30 min to 31 min. he says that we can reduce the page fault by increasing the number of frames in main memory. as we know in our scenario there are no free frames so the number of page fault going to increase thats why page fault rate also increases.

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