Belady's Anomaly

One important and nice topic in Os that most people like is that of Belady's Anomaly.Also called FIFO anomaly. Usually, on increasing the number of frames allocated to a process' virtual memory, the process execution is faster, because fewer page faults occur. Sometimes, the reverse happens, i.e., the execution time increases even when more frames are allocated to the process. This is Belady's Anomaly. This is true for certain page reference patterns.It is a must for everyone learning OS to know about it.So learn it as soon as possible friends.