Maurice Tutor

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Teaching Since: May 2017
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 29 Oct 2017 My Price 4.00

virtual page reference stream

Suppose that the virtual page reference stream contains repetitions of long sequences of page references followed occasionally by a random page reference. For example, the sequence: 0, 1, ... , 511, 431, 0, 1, ... , 511, 332, 0, 1, ... consists of repetitions of the sequence 0 , 1 , . . . , 511 followed by a random reference to pages 431 and 332.

(a) Why won"t the standard replacement algorithms (LRU, FIFO, Clock) be effective in handling this workload for a page allocation that is less than the sequence length?

(b) If this program were allocated 500 page frames, describe a page replacement approach that would perform much better than the LRU, FIFO, or Clock algorithms.

Answers

Maurice Tutor
(5)
Status NEW Posted 29 Oct 2017 09:10 PM My Price 4.00

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