Excessive paging that slows down system performance
A process that executes too quickly
A memory leak in the operating system
A process that remains in the ready queue for too long
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The Correct Option isA
Solution and Explanation
Think about what the CPU is actually busy doing. In a healthy system the CPU runs process code most of the time. In a thrashing system the degree of multiprogramming is pushed so high that each process gets very few frames.
Every reference then tends to miss the frames it needs, triggering a page fault and a disk transfer. The CPU utilisation from real work collapses while paging I/O climbs. The system looks busy but gets little done.
So the defining sign is heavy paging that drags system performance down.
$$\text{Thrashing} = \text{high page-fault rate} \Rightarrow \text{low useful throughput}$$\[\boxed{\text{Excessive paging that slows down system performance}}\]
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