Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
What is page fault?
In the computer storage technology a page fault is an exception which is raised by the memory management unit when a requested page isn't mapped in physical memory. This exception is passed on to the OS (operating system) which is able to then try to handle the exception by making the required page accessible at a location in physical memory.
For instance a page fault may take place when a program requests a page in memory and the system can't find it at the requested location. If the page is elsewhere in memory then the fault is called as a soft page fault. If the page should be retrieved from disk, the fault is called as a hard page fault.
Opposing to what its name might suggest a page fault is never a fatal error. Actually, it is a relatively normal occurrence in any OS operating system that utilizes virtual memory in order to increase the amount of memory available to programs. The term General Page Fault is habitually found printed on the screens of computers running a Microsoft Windows operating system when a serious error has take placed in the paging algorithms that handle an ordinary and generally harmless page fault. This kind of paging error takes place in the software handling the exception, and isn't directly related to the page fault itself, which take place in hardware.
Page faults by their extremely nature degrade a program's or operating system's performance and is able to cause thrashing. Optimizing any or every program's memory usage and commonly making more physical memory available reduces the number of page faults that occur, and get better the program's or the entire system's performance.
What are the necessary conditions for deadlocks? 1. Mutual exclusion : Only one process at a time is able to use the resource. 2. Hold and wait : A process should be holdi
Explain about interprocess communication The cooperating processes communicate with each other via an interprocess communication facility. IPC gives a mechanism to permit proce
While it is hard to resolve a deadlock which has been detected, fortunately it is fairly easy to prevent deadlocks from ever happening. The key is that the conditions above for dea
LRU approximation page replacement In this we utilize the reference bit associated with the page entry to choose a page to be removed. The various algorithms used for the imp
Addventage
Question 1: a) Briefly explain each of the following terms: (i) Distributed systems. (ii) Real time systems. (iii) Multiprocessor. b) What is the impo
Consider a large web-based database. In some sense, Google is sort of like this. There might be many users who want to read from the database, but only a few users who are allowed
Additional-reference-bits algorithm We can keep an 8-bit byte for every page in a table in memory. The operating system shifts the reference bits right 1 bit, discarding the lo
Producer-Consumer Problem Using Semaphores The Solution to producer-consumer problem use three semaphores namely- full, empty and mutex. The semaphore 'full' is utilized for
For this exercise I wanted to give you some real-world examples of useful bash scripts. Therefore, you will write a couple of scripts that I actually use in my teaching to automate
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd