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Operating Systems | Memory Management | Question 8

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  • Last Updated : 12 Feb, 2013
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Thrashing occurs when
(A) When a page fault occurs
(B) Processes on system frequently access pages not memory
(C) Processes on system are in running state
(D) Processes on system are in waiting state

Answer: (B)

Explanation: Thrashing occurs processes on system require more memory than it has.

If processes do not have “enough” pages, the pagefault rate is very high. This leads to:
– low CPU utilization
– operating system spends most of its time swapping to disk

The above situation is called thrashing

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