Overview

Background




Demand Paging




Page Fault

Page Fault Handling Steps

Page Replacement

Demand Paging Performance


Process Creation
Process & Virtual Memory

Copy-on-Write



Memory-Mapped Files


Page Replacement
Page Replacement Concept

Page Replacement (Page Fault) Steps


Replacement Algorithms

First-In-First-Out (FIFO) Algorithm

FIFO Illustrating Belady’s Anomaly


Optimal (Belady) Algorithm

LRU Algorithm (Least Recently Used)




Counting Algorithms

Allocation of Frames
Introduction

Frame Allocation

 
  
Thrashing
Definition of Thrashing


Working-Set Model



Page Fault Frequency Scheme




