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

How color depth impacts on image quality and file size, Question : 1. ...

Question : 1. Define the term Color Depth. Explain how it impacts on image quality and file size. 2. Using an appropriate example, explain when you will consider using GIF

What are the two types of branch prediction techniques, What are the two ty...

What are the two types of branch prediction techniques available?  The two types of branch prediction methods are  1) Static branch prediction  2) Dynamic branch predicti

What are the various functional verification methodologies, What are the va...

What are the various functional verification methodologies Ans: TLM (Transaction Level Modelling) Linting RTL Simulation (Environment  involving  :  stimulus  generators,

3D rotation, Magnify a triangle with vertices A = (0,0), B = (3,3) and C = ...

Magnify a triangle with vertices A = (0,0), B = (3,3) and C = (6,4) to twice its size in such a way that A remains in its original position.

Connectives - first-order logic , Connectives - first-order logic: We ...

Connectives - first-order logic: We can string predicates all together in a sentence by using connectives into the same way to conduct that we did for propositional logic. We

Weight training calculations - artificial intelligence, Weight Training Cal...

Weight Training Calculations -Artificial intelligence: Because we have more weights in our network than in perceptrons, first we have to introduce the notation: wij to denote t

How to save your file in dreamweaver, HOW TO SAVE YOUR FILE? Step 1: Cl...

HOW TO SAVE YOUR FILE? Step 1: Click on FILE Step 2: Click on SAVE Step 3: Choose the folder in which you want to save Step 4: Provide a name to the file (with .htm /

Explain cache organisation, Q. Explain Cache Organisation? Cache memori...

Q. Explain Cache Organisation? Cache memories are found in nearly all latest computers.  They are very helpful for increasing speed of access of information from memory.  Let's

What is matrix addressing mode, What is Matrix Addressing Mode. Ans. M...

What is Matrix Addressing Mode. Ans. Matrix Addressing Mode: The arrangement which needs the fewest address lines is a square array of n rows and n columns for a whole memory

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