Thrashing

Question

Comments

All ??

Answer 1

A) Program Structure

reason: Thrashing occurs when page fault rate increases which in turn increases the page fault rate which  results in less amount of productive work .

It depends on which type of page replacement algorithm we use, if we use global page replacement algorithm then thrashing will occur . We can  minimize the effects of thrashing  by using local page replacement.

Comments

We cannot say that. It might avaoid thrashing in some cases and causes threashing on other cases. So, overall we cannot say it "minimizes" thrashing. Yes, it does ensure that one process won't thrash another process.

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why we cannot say that it will minimize?

After all thrashing will be contained within a single process.

It is better to thrash a single process using Local Page replacememt  then to use Global page replacement and thrash other process also which.

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Because when we restrict page replacement to individual processes we ineffectively reduces the physical memory for it and this can cause its individual thrashing which might never had happened if we used global page replacement.