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Virtual memory


In computing, virtual memory is a memory management technique that is implemented using .... If it is in real memory, the page table entry will contain the real memory address at which the page is s...

What is virtual memory? - Windows Help - Microsoft


Get a brief explanation about virtual memory and how Windows uses the paging file in ... For more information, see Change the size of virtual memory.

Virtual Memory: The Details


To implement virtual memory, it is necessary for the computer system to have ... never change — memory address 123 is always the same physical location ... assume that the application's first instruction accesses data stored at address 12374. ... all processes, the operating system must track usage information for all pages.

What is virtual memory? | HowStuffWorks


When you have enough RAM for your needs, virtual memory works beautifully. When you don't, the operating system has to constantly swap information back ...

CS110: Introduction to Computers


Virtual memory is not as fast as RAM, because your computer takes longer to ... direct the computer to the location of virtual memory are stored in RAM and are lost when .... A directory contains information about every file on the storage device, ...

Virtual Memory Definition - The Tech Terms Computer Dictionary


It does this by using hard disk space for additional memory allocation. However, since the hard drive is much slower than the RAM, data stored in virtual memory ...

linux - Where is the virtual memory stored on hard drive? - Unix ...


Mar 26, 2013 ... Where on the hard drive is this data / instruction stored? Is it stored .... Getting information about a process' memory usage from /proc/pid/smaps.

Understanding Virtual Memory and the Free Store (heap ...


Explanation of virtual memory and its relationship to C++ programming. ... about whether the address is physically stored in RAM or on the hard disk. ... block of memory is found, it is marked as reserved and a pointer to that location is returned.

Virtual Memory - Computer Systems


address space stored on disk, keeping only the active areas in main memory ..... You can monitor the number of page faults (and lots of other information) .... virtual memory pages, and maps them to k arbitrary physical pages located anywhere.

How Virtual Memory Works


What is virtual memory, how is it implemented, and why do operating systems use ... currently only 50 MB of available physical memory stored on the RAM chips.

More Info

Virtual Memory


Initially, virtual memory meant the idea of using disk to extend RAM. .... That information is kept in another page table, which is indexed by the virtual page ( same as ... It's useful to keep it located in certain parts of RAM for just such a purpose.

Physical Computer Memory and Virtual Memory - Data, Ram, Hard ...


Physical and virtual memory are forms of memory (internal storage of data). ... When information is needed in RAM, the exchanges system rapidly swaps blocks of ... of stored data to a virtual address maintained by the virtual-memory process.

What is virtual memory? - Definition from WhatIs.com - SearchStorage


Virtual memory is a feature of an operating system (OS) that allows a computer to compensate for shortages of physical memory by temporarily transferring ...