'Optimal page replacement' diaporamas de présentation

OMSE 510: Computing Foundations 9: Course Cleanup

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Page replacement

Page replacement. Assume a normal page table User-program is executing A PageInvalidFault occurs! The page needed is not in memory Select some frame and remove the page in it If it has been modified, it must be written back to disk

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CMSC421: Principles of Operating Systems

CMSC421: Principles of Operating Systems. Nilanjan Banerjee. Assistant Professor, University of Maryland Baltimore County nilanb@umbc.edu http://www.csee.umbc.edu/~nilanb/teaching/421/. Principles of Operating Systems

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4.4 Page replacement algorithms

4.4 Page replacement algorithms. Page replacement algorithms. Also seen in: CPU cache Web server cache of web pages Buffered I/O (file) caches. Optimal page replacement. Page fault occurs Scan all pages currently in memory

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Scribe for 7 th April 2014

Scribe for 7 th April 2014. Page Replacement Algorithms Payal Priyadarshini 11CS30023. Page replacement.

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Page Replacement Algorithms

Page Replacement Algorithms

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Page Replacement

Page Replacement. Overview. Why we need page replacement? Basic page replacement technique. Different type of page replacement algorithm and their examples. Why????. Limited physical memory --> limited number of frame --> limited number of frame allocated to a process.

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