Courses/Computer Science/CPSC 457.W2013/Lecture Notes/PageReplacement

Page Replacement

In this session we will look at one of the most important and studied topics in operating systems: the approaches taken to managing a working set of memory pages, and shuffling them in between disk and physical memory to support paging and virtual memory.

Focus Question

How does the OS pick which page frame to evict when a page fault occurs and there are no free page frames?

Notes

The slides from today

Readings

• MOS: 3.4
• ULK, Chapter 17 (optional)