Question

'Thrashing' in a virtual memory system refers to a condition where:

A The CPU utilization is unusually high because processes rarely need to page in or out
B The system spends more time swapping pages in and out of memory than actually executing processes, causing overall performance to collapse
C Secondary storage is completely disabled to speed up access
D The page replacement algorithm never selects a page for eviction
E All pages of every process are permanently resident in physical memory
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