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Paging and Virtual memory

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between Paging and Virtual memory

Paging vs. Virtual memory

In computer operating systems, paging is a memory management scheme by which a computer stores and retrieves data from secondary storage for use in main memory. In computing, virtual memory (also virtual storage) is a memory management technique that provides an "idealized abstraction of the storage resources that are actually available on a given machine" which "creates the illusion to users of a very large (main) memory." The computer's operating system, using a combination of hardware and software, maps memory addresses used by a program, called virtual addresses, into physical addresses in computer memory.

Similarities between Paging and Virtual memory

Paging and Virtual memory have 20 things in common (in Unionpedia): Atlas (computer), Cache replacement policies, Computer multitasking, Drum memory, Fragmentation (computing), IBM System/370, Memory management, Memory segmentation, Microsoft Windows, MVS, Operating system, Overlay (programming), Page (computer memory), Page fault, Page replacement algorithm, Page table, Thrashing (computer science), University of Manchester, Working set, X86.

Atlas (computer)

The Atlas Computer was a joint development between the University of Manchester, Ferranti, and Plessey.

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Cache replacement policies

In computing, cache algorithms (also frequently called cache replacement algorithms or cache replacement policies) are optimizing instructionsor algorithmsthat a computer program or a hardware-maintained structure can follow in order to manage a cache of information stored on the computer.

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Computer multitasking

In computing, multitasking is the concurrent execution of multiple tasks (also known as processes) over a certain period of time.

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Drum memory

Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria.

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Fragmentation (computing)

In computer storage, fragmentation is a phenomenon in which storage space is used inefficiently, reducing capacity or performance and often both.

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IBM System/370

The IBM System/370 (S/370) was a model range of IBM mainframe computers announced on June 30, 1970 as the successors to the System/360 family.

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Memory management

Memory management is a form of resource management applied to computer memory.

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Memory segmentation

Memory segmentation is the division of a computer's primary memory into segments or sections.

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Microsoft Windows

Microsoft Windows is a group of several graphical operating system families, all of which are developed, marketed, and sold by Microsoft.

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MVS

Multiple Virtual Storage, more commonly called MVS, was the most commonly used operating system on the System/370 and System/390 IBM mainframe computers.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.

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Overlay (programming)

In a general computing sense, overlaying means "the process of transferring a block of program code or other data into internal memory, replacing what is already stored".

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Page (computer memory)

A page, memory page, or virtual page is a fixed-length contiguous block of virtual memory, described by a single entry in the page table.

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Page fault

A page fault (sometimes called #PF, PF or hard fault) is a type of exception raised by computer hardware when a running program accesses a memory page that is not currently mapped by the memory management unit (MMU) into the virtual address space of a process.

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Page replacement algorithm

In a computer operating system that uses paging for virtual memory management, page replacement algorithms decide which memory pages to page out, sometimes called swap out, or write to disk, when a page of memory needs to be allocated.

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Page table

A page table is the data structure used by a virtual memory system in a computer operating system to store the mapping between virtual addresses and physical addresses.

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Thrashing (computer science)

In computer science, thrashing occurs when a computer's virtual memory resources become saturated, leading to a constant state of paging (rapidly exchanging data in memory for data on disk), to the exclusion of most application-level processing.

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University of Manchester

The University of Manchester is a public research university in Manchester, England, formed in 2004 by the merger of the University of Manchester Institute of Science and Technology and the Victoria University of Manchester.

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Working set

Working set is a concept in computer science which defines the amount of memory that a process requires in a given time interval.

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X86

x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.

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The list above answers the following questions

Paging and Virtual memory Comparison

Paging has 83 relations, while Virtual memory has 100. As they have in common 20, the Jaccard index is 10.93% = 20 / (83 + 100).

References

This article shows the relationship between Paging and Virtual memory. To access each article from which the information was extracted, please visit:

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