Unformatted text preview: given instance in time, the CPU is accessing one page of a process. At that point, it doesn’t really matter if the other pages of that process are even in memory. In demand paging, the pages are brought into memory on demand. That is, when a page is referenced, we first see whether it is in memory already and, if so, complete the access. If not, the page is brought in from secondary memory into an available frame, and then the access is completed. The act of bringing in a page from secondary memory, which often causes another page to be written back to secondary memory, is called a page swap ....
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- Fall '10
- Virtual memory, Paging, PMT Page Frame