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Question
In the working-set strategy, which of the following is done by the operating system to prevent thrashing?
I. It initiates another process if there are enough extra frames
II. It selects a process to suspend if the sum of the sizes of the working-sets.
III. Exceeds the total number of available frames.
In the working-set strategy, which of the following is done by the operating system to prevent thrashing?
I. It initiates another process if there are enough extra frames
II. It selects a process to suspend if the sum of the sizes of the working-sets.
III. Exceeds the total number of available frames.
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Solution
The correct option is B II only
If there are enough extra frames, another process can be initiated. If the sum of the working-set sizes increases, exceeding the total number of available frames, the operating system selects a process to suspend. The process's pages are written out (swapped), and its frames are reallocated to other processes. The suspended process can be restarted later."
If there are enough extra frames, another process can be initiated. If the sum of the working-set sizes increases, exceeding the total number of available frames, the operating system selects a process to suspend. The process's pages are written out (swapped), and its frames are reallocated to other processes. The suspended process can be restarted later."
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