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NTHU-Operating System: Chap9 Virtual Memory Management

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




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