First In First Out

First In First Out (FIFO):
1. FIFO stands for First In First Out.
2. It is simplest page replacement technique.
3. In this technique, the oldest page is chosen as a victim for replacement.
4. A queue is used to main the pages in the memory.
5. The page present at the head position is removed and the new page is inserted at the tail position.
 It is easy to understand & execute.
 However, performance wise it’s not good.
 It suffers from Belady’s Anomaly which says that the page fault increases with the reduction in page frames.


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