This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthor

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Swap Space
Swap Space

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!!! Overview
[{$pagename}], in [Linux], is a [Virtual Memory] mechanism.[1]
If the system needs more memory resources and the [RAM] is full, inactive pages in memory are moved to the [{$pagename}].
[{$pagename}] can help machines with a small amount of [RAM], it should not be considered a replacement for more [RAM].
[{$pagename}] is located on hard drives, which have a slower access time than physical memory.
[{$pagename}] can be a dedicated swap partition (recommended), a swap file, or a combination of swap partitions and swap files.
Swap should equal 2x physical RAM for up to 2 GB of physical RAM, and then an additional 1x physical RAM for any amount above 2 GB, but never less than 32 MB.
!! [Linux] and [{$pagename}]
[Page 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 Memory] address space of a process. The processor's MMU detects the page fault, while the exception handling software that handles page faults is generally a part of the [Operating System] kernel. When handling a page fault, the [Operating System] generally tries to make the required page accessible, perhaps retrieving the page from [{$pagename}], at the location in physical memory, or terminates the program in case of an illegal memory access.
!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [What is Swap Space?|https://www.centos.org/docs/5/html/5.2/Deployment_Guide/s1-swap-what-is.html|target='_blank'] - based on information obtained 2016-12-28-
This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthorTop