Question

ach for page replacement in the context of an LRU approximation strategy, using an example....


Describe the second chance approach for page replacement in the context of an LRU approximation strategy, using an example.

Answer


Algorithm:

All piece reference values are set to False (Let it be the size of the maximum limit of the queue).

Set the greatest limit of an unfilled queue.


Verify if the queue is empty:

Set the applicable piece reference to 1 assuming the component is in the line.

In the event that the part is not currently present in the bar, add it.

If the wait is lengthy:

Find the first section in the queue whose piece reference is 0, and in the event that any previous component has bit authority = 1, transform it to 0.

Turn the section until one of its elements has a piece reference worth of 0.

Remove this thing from the queue.

Insert the ongoing component of the cluster input onto the queue.

This procedure combines the usage of a queue similar to FIFO (FIFO (Page Replacement)) with an exhibit to monitor the bits used to give the queued page a "second opportunity."

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