Question

 

What is "thrashing" in the context of virtual memory? Explain why it occurs and describe two methods an operating system can use to prevent or handle thrashing.

16 Sep 2025
Answer :
Word Count : 494
Thrashing in the context of virtual memory is a situation where the operating system spends more time swapping pages between the main memory and the secondary storage than executing actual processes. It occurs when the system is overloaded with processes that require more memory than what is physically available, leading to excessive page faults. Each time a process accesses a page not currently in memory, a page fault occurs, forcing the operating system to bring the required page from disk into RAM. When this happens too frequently, the CPU utilization drops significantly because most of the time is _________ __________ _____ ________ ________ __________ ___ ___.
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