Editing Memory paging (section)

===AmigaOS 4===
[[AmigaOS&nbsp;4.0]] introduced a new system for allocating RAM and defragmenting physical memory. It still uses flat shared address space that cannot be defragmented.
It is based on [[slab allocation]] and paging memory that allows swapping.
Paging was implemented in [[AmigaOS 4.1]].
It can lock up the system if all physical memory is used up.<ref>{{cite web
|url         = http://forum.hyperion-entertainment.biz/viewtopic.php?f=14&t=755#p9346
|title       = Re: Swap issue also on Update 4 ?
|author      = AmigaOS Core Developer
|publisher   = Hyperion Entertainment
|date        = 2011-01-08
|access-date  = 2011-01-08
|url-status     = live
|archive-url  = https://web.archive.org/web/20130412080355/http://forum.hyperion-entertainment.biz/viewtopic.php?f=14&t=755#p9346
|archive-date = 2013-04-12
}}</ref>
Swap memory could be activated and deactivated, allowing the user to choose to use only physical RAM.