PPT Slide
Local Page Replacement Algorithms
- Global algorithms make no attempt to model the behavior of an individual process.
- Better page replacement can be found using more accurate models of individual process execution.
- Currently accepted model: Phase model of Working Sets.
- Working set: set of pages that a process is currently using. If a process has only the working set of pages mapped to page frames in it’s page table then it won’t page fault.
- The working set is defined in terms of past page references.