An operating system uses a Least Recently Used, optimal and also FIFO page replacement algorithm. Consider the following page reference ordering (pages are referenced from left to right): 1, 9, 1, 6, 9, 2, 6, 2, 1, 9, 0. Compute the hit ratio, miss ratio and number of page faults that are generated for all the three algorithms assuming that the process has been allocated four page frames, and that initially, none of the pages are in the main memory.

An operating system uses a Least Recently Used, optimal and also FIFO page replacement algorithm. Consider the following page reference ordering (pages are referenced from left to right): 1, 9, 1, 6, 9, 2, 6, 2, 1, 9, 0. Compute the hit ratio, miss ratio and number of page faults that are generated for all the three algorithms assuming that the process has been allocated four page frames, and that initially, none of the pages are in the main memory.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Storage Devices

Storage devices can store digital information/data and applications (in the form of audio, video, image, etc.) to process the result of any computational work. They are a kind of computer hardware that stores information and instruction to be processed. A storage unit is a part of a computer system. Every computer has a storage device. The storage devices work as a memory. They are also known as a storage medium, digital storage, or storage media, which temporarily or permanently store information. They are used either internally or externally in the computer system, server, or any computation device to hold the information. Examples include a pen drive, CD, DVD, floppy disk, memory card and so forth.

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An operating system uses a Least Recently Used, optimal and also FIFO page
replacement algorithm. Consider the following page reference ordering (pages are
referenced from left to right): 1, 9, 1, 6, 9, 2, 6, 2, 1, 9, 0. Compute the hit ratio, miss
ratio and number of page faults that are generated for all the three algorithms
assuming that the process has been allocated four page frames, and that initially, none
of the pages are in the main memory.

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