B.tech. (Information Technology)
Operating system tutorial
os ppt
R09-CSE-Lab-3-4
Ch09
Paging, Page Tables, and Such Andrew Whitaker CSE451.
Page Replacement Algorithms Want lowest page-fault rate Evaluate algorithm by running it on a particular string of memory references (reference string)
4.4 Page replacement algorithms. Page replacement algorithms Also seen in: CPU cache Web server cache of web pages Buffered I/O (file) caches.
Operating Systems Virtual Memory (Chapter 4.3). Memory Management Outline Processes (done) Memory Management –Basic(done) –Paging(done) –Virtual memory.
Background Virtual memory – separation of user logical memory from physical memory. Only part of the program needs to be in memory for execution. Logical.
Chapter 9: Virtual Memory. Background Demand Paging Copy-on-Write Page Replacement Allocation of Frames Thrashing Memory-Mapped Files Allocating Kernel.
Page Replacement Algorithms So, when we have a page fault we have to find an eviction candidate. Optimally, we would like to evict the page that will not.
