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

Caption to commission rate, Get a listing of the name, commission rate, and...

Get a listing of the name, commission rate, and hire date of all salesmembers who sell to commercial customers. Sort the result in order from the 1st hired to the most recently hir

Give example of real time processing, Give example of Real time (transactio...

Give example of Real time (transaction) processing Using this illustration of booking seats on a flight, below sequence of events would occur: -  Customer/travel agent conta

Explain salient points about indirect addressing, Q. Explain salient points...

Q. Explain salient points about indirect addressing? A number of salient points about this scheme are:  In this addressing scheme effective address EA and contents of th

What is dynpro, What is dynpro?What are its components ? A dynpro (Dyna...

What is dynpro?What are its components ? A dynpro (Dynamic Program) having of a screen and its flow logic and controls exactly single dialog steps. The dissimilar components

Show the liability of cpu in interrupt cycle, Q. Show the liability of CPU ...

Q. Show the liability of CPU in interrupt cycle? In the interrupt cycle the liability of CPU/Processor is to ensure whether any interrupts have happened checking presence of in

What is a process scheduling, What is a Process Scheduling? Scheduling...

What is a Process Scheduling? Scheduling is a key element of the workload management software that usually performs several or all of: Queuing Scheduling Monito

What is dom, DOM is the Document Object Model (DOM) which is an interface s...

DOM is the Document Object Model (DOM) which is an interface specification handled by the W3C DOM Workgroup that explains an application independent mechanism to access, parse, or

Determine about the blocking suspicious behaviour, Determine about the bloc...

Determine about the blocking suspicious behaviour The response could be spontaneous and automatic, with an option to generate the alert message manually. The history recorded i

Show the example of internet address, Q. Show the example of internet addre...

Q. Show the example of internet address? The following can be a typical person understandable address on Internet: VVS @ expertsmind.us VVS is an username which in gene

Rationales for an effective and independent regulator, Question: (a) W...

Question: (a) What are the rationales for an effective and independent regulator? (b) Across Africa, regulators have established Universal Service Funds (USFs) in order to

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