Multiple choice

Page fault decreases with increasing the number of frames. But in some page replacement algorithm, the page fault rate may increase with increasing the number of frames. What is this unexpected phenomenon called?

  1. Thrashing

  2. Caching

  3. Anomaly

  4. Belady's anomaly

  5. Swapping

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This phenomenon is called Belady's anomaly, often found in FIFO page replacement algorithm.