Explainoptimal page replacement in detail, Operating System

Assignment Help:

Optimal page replacement

An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that put back the page that will not be used for the longest period of time. The drawback of this algorithm is that it is very hard to implement as it requires future knowledge of the reference string. For example consider the reference string 1, 2, 3,4,3,1. Here 1, 2, 3 are inserted as normal but when 4 comes we replace 2 as it isn't used again.

 


Related Discussions:- Explainoptimal page replacement in detail

Paging, protection in paging

protection in paging

Define jobs which are admitted to the system for processing, Define the Job...

Define the Jobs which are admitted to the system for processing is called The Jobs which are admitted to the system for processing is known as long-term scheduling.

What is an effector process, What is an effector process? The effector ...

What is an effector process? The effector process is a method that verifies itself.The effector process exists in particular criteria.

Explain the steps in deadlock recovery, Explain the steps in deadlock recov...

Explain the steps in deadlock recovery. a)      Exterminate off all processes involved - drastic. b)      Exterminate off one at a time till deadlock gone - select a victim.

What are the requirements for a swapper to work, The swapper work s on t...

The swapper work s on the biggest scheduling priority. Initially it will look for any sleeping process, if not get then it will see for the ready-to-run process for swapping. Bu

What are the different file operations?, What are the different file operat...

What are the different file operations? Create : - Space for the file in the file system update directory table. Write : - file name and data to be written is

In which page replacement policy balady’s anomaly occurs, In which page rep...

In which page replacement policy Balady’s anomaly occurs? FIFO (First in First Out)

Explain inverted page table, Inverted page table In page table the page...

Inverted page table In page table the page table has one entry for every page that the process is using. The operating system must translate this reference into a physical memo

Define an assembly language, Define an assembly language  Assembly lan...

Define an assembly language  Assembly language stands for a Low level programming language

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd