Paged virtual memory - computer architecture, Computer Engineering

Assignment Help:

Paged virtual memory:

Mostly all implementations of virtual memory divide the virtual address space of an application program into pages; a page is a block that contains contiguous virtual memory addresses. Pages are generally at least 4K bytes in size, and systems with big virtual address ranges or big amounts of real memory (for example: RAM) generally use larger page sizes.

Page tables

Mostly all the implementations use page tables to translate the virtual addresses of application program into physical addresses (also referred to as "real addresses") used by the hardware to process instructions. Each entry in the page table have a mapping for a virtual page to either the real memory address at which the page is stored, or an pointer that the page is presently held in a disk file. (Although most of the system does, some systems cannot support use of a disk file for virtual memory.)

Systems can have 1 page table for the overall system or a distinct page table for each application. If there is only 1, different applications which are running at the one time share a single virtual address space, for example they use different parts of a single range of VA. Systems which are use multiple page tables provide multiple virtual address spaces - concurrent applications think they are utilizing the same range of VA, but their separate page tables redirect to different real addresses.

 

 


Related Discussions:- Paged virtual memory - computer architecture

Participate in grid computing, Different systems that can participate in gr...

Different systems that can participate in grid computing as platform are:  Windows 3.1, 95/98, NT, 2000 XP , DOS, OS/2, , supported by  Intel ( x86); Mac OS  A/UX (Unix)  sup

Explain traffic intensity in networking, Explain Traffic Intensity in netwo...

Explain Traffic Intensity in networking. Traffic Intensity: The traffic load on a given network may be on interoffice trunk lines, the local switching unit or other common s

Diffeomorphism, A different smooth structure on R: Show that (U, f) given b...

A different smooth structure on R: Show that (U, f) given by U = R, f : x -> x3, is a local chart of the topological manifold M = R which is not a member of the standard smoo

Analysts in telecommunications area, Q. Analysts in Telecommunications area...

Q. Analysts in Telecommunications area? Here computer networks which play a critical role in success of any business are designed, implemented and managed. Here Network analyst

Effective collaborative computing, Explain how the Web enables effective co...

Explain how the Web enables effective collaborative computing. Discuss the similarities and differences among WebEx, Microsoft NetMeeting and Novell Groupwise software (in less tha

Describe attributes and properties of system, System Analysis & Design ...

System Analysis & Design 1. Describe attributes, properties, and characteristics of system. 2. What do you mean by Organizational Aspects of System Life Cycles? Explain.

Define bandwidth, Define Bandwidth? When transferring blocks of data, i...

Define Bandwidth? When transferring blocks of data, it is of interest to know how much time is required to transfer an entire block, as blocks can be variable in size it is use

Vector-memory instructions-vector processing, Vector-Memory Instructions : ...

Vector-Memory Instructions : When vector operations with memory M are executed then these are vector-memory instructions. These instructions are denoted with the many function mapp

Compare hypertext versus hypermedia, Compare hypertext versus hypermedia.  ...

Compare hypertext versus hypermedia.  Hypertext is basically similar as regular text - it can be stored, read, searched, or edited - with a significant except ion: hyper text h

Message passing programme development environment, In a multicomputer syste...

In a multicomputer system the computational load amid different processors should be balanced.  To pass information between different nodes message passing technique is used. The p

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