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.
How the Nested Macro calls are expanded LIFO (Last in First out)
The questions ask List four major functions of an OS. My answer: Function 1: Provide a user interface Function 2: Manage files Function 3: Manage hardware Function 4: Manage appli
Problem: a) To ensure proper operation, the operating system and all the other programs must be protected from any malfunctioning program. Describe a mechanism which is impleme
Explain the ThreadSwitch function used in the netware Since NetWare 3 and 4 are nonpreemptive environments, it may be necessary for the application developer to explicitly reli
Select any business process within this firm, describe it as a set of steps then fill the following table (flow, information, sender and receivern #Minimum 100 words accepted#
What are batch systems? Early computers were physically huge machines run from a console. The general input devices were card readers and tape drivers. The common output device
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
Q. In some systems a subdirectory is able to be read and written by an authorized user just as ordinary files can be. a. Explain the protection problems that could arise. b.
How can the index blocks be implemented in the indexed allocation scheme? The index block can be implemented as follows a. Multilevel scheme b. Linked scheme c. Combin
LOOK o Like SCAN except stops moving inwards (or outwards) when no more requests in that direction exist. C-SCAN (circular scan) o Moves inwards servicing requests u
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