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Explain demand paging with a proper example
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Explain demand paging with a proper example
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Mar 22, 2021
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Explain demand paging with a proper example
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Demand
paging
:
In computer operating systems, demand paging (as opposed to anticipatory paging) is a method of virtual memory management. In a system that uses demand paging, the operating system copies a disk page into physical memory only if an attempt is made to access it and that page is not already in memory (i.e., if a page fault occurs). It follows that a process begins execution with none of its pages in physical memory, and many page faults will occur until most of a process's working set of pages are located in physical memory. This is an example of a lazy loading technique.
Hannes Stoolmann
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