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    Saturday, February 27, 2010

    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 known as the Belady's Anomaly. This is true for certain page reference patterns. This is also called the FIFO anomaly.

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