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

Short notes on model primitives in director mx 2004, Question: (a) Prep...

Question: (a) Prepare short notes on the model primitives in Director MX 2004. (b) Therefore using the box primitive write codes to prepare a new model resource of length 50

Value - elements of composition, Value Value is the relative amount of ...

Value Value is the relative amount of light and darkness in an image or a particular colour within an image. Value is also known as Tone and refers to the way the artist has re

Show the transmission control protocol, Q. Show the Transmission Control Pr...

Q. Show the Transmission Control Protocol? Transmission Control Protocol (TCP) TCP makes Internet reliable. TCP solves many problems which can occur in a packet switching

Explain design parameters, Explain the following design parameters S, ...

Explain the following design parameters S, SC, TC, C, CCI, EUF, K, T S The various terms are given below: S: Total number of switching components A good design sh

Data base, why to learn data base?

why to learn data base?

Write the truth table of NOR gate, Write the truth table of NOR gate. Ans...

Write the truth table of NOR gate. Ans. The truth table for NOR gtae is shown below:

What are assembly attributes, Attributes are declarative tags in code that ...

Attributes are declarative tags in code that put in additional metadata into an assembly.

Design of a software system, The aim of this Assignment is to demonstrate k...

The aim of this Assignment is to demonstrate knowledge about the analysis and design of a software system and understanding of the application of an object-oriented metho

Explain about microsoft access, Microsoft access name has been transformed ...

Microsoft access name has been transformed to Microsoft office access. This software incorporates relational database management system which joins GUI (graphical user interface) w

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