Virtual memory compression: Difference between revisions

Revision as of 07:32, 6 January 2015

Revision as of 07:34, 6 January 2015

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==History==

Virtual Memorymemory Compressioncompression has gone in and out of favor as a technology. The price and speed of RAM and external storage have plummeted due to [[Moore’s Law]] and improved RAM interfaces such as [[DDR3]], thus reducing the need for virtual memory compression, while multi-core processors, server farms, and mobile technology together with the advent of flash based systems make virtual memory compression more attractive.

===Origins===

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In early 2008, a [[Linux]] project named [[zram]] (originally compcache) was released, and later incorporated into [[ChromeOS]].<ref name="zram-google-page"/>

In 2010, IBM released Active Memory Expansion (AME) for [[AIX]] 6.1 which implements Virtualvirtual Memorymemory Compressioncompression.<ref name="IBM-AIX-AME"/>

In 2012 some versions of the POWER7+ chip included data compression support for Virtualvirtual Memorymemory Compressioncompression.<ref name="IBM-POWER7+"/> In December 2012 the [[zswap]] project was announced and later merged into the [[Linux kernel mainline]].

In June 2013, Apple announced that it will include virtual memory compression in [[OS X Mavericks]].