Define page fault, Operating System

Assignment Help:

Page fault is a trap to the software gained by the hardware when a process accesses a page that is goes in the virtual address space, but not added in physical memory. In the hard case the operating system tries to operate the page fault by creating the required page accessible at a location in physical memory disk or kills the process in the case of an illegal access. The system that detects a page fault is the memory management unit in a processor. The exception handling software that operates the page fault is usually part of the operating system.

Contrary to what the name 'page fault' might suggest, page faults are not errors and are necessary and common to raise the amount of memory available to programs in any operating system that use virtual memory, including Unix-like, Microsoft Windows systems, and z/OS. Microsoft access the term hard fault in more recent parts of the source Monitor to mean 'page fault'

 

1809_Page Fault.png


Related Discussions:- Define page fault

Managing outside communication, Problem: Managing Outside Communication...

Problem: Managing Outside Communication. a. What is the principal action we use when communicating through a web browser? b. Give an example of how to preaddress an email

Explain about diffrent process state, Q. Explain about diffrent Process Sta...

Q. Explain about diffrent Process State? Process State When process executes, it changes its state. Process state is defined as the current activity of the process. Fi

Paging, protection in paging

protection in paging

How the nested macro calls are expanded, How the Nested Macro calls are exp...

How the Nested Macro calls are expanded LIFO (Last in First out)

Explain fifo page replacement, Explain FIFO page replacement A FIFO rep...

Explain FIFO page replacement A FIFO replacement algorithm associates with every page the time when that page was brought into memory. When a page must be changed, the oldest p

Requirements memory management intended to satisfy?, Normal 0 f...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Selection of a disk-scheduling algorithm, Q. How would utilize of a RAM di...

Q. How would utilize of a RAM disk affect your selection of a disk-scheduling algorithm? What factors would you require to consider? Do the similar considerations apply to hard-di

What is the use of fork and exec system calls, What is the use of fork and ...

What is the use of fork and exec system calls? Fork is a system call by which a latest process is created. Exec is also a system call, which is used after a fork by one of the

Write a short note on pcb, Write a short note on PCB? Every process is ...

Write a short note on PCB? Every process is represented in the operating system by a process control block also called a task control block. It contains more information regard

State in a deadlock-avoidance system, Question: In a deadlock, processe...

Question: In a deadlock, processes never finish executing and system resources are tied up, preventing other jobs from starting. Deadlocks can be characterised by a set of cond

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