Date: Wed, 7 Feb 2018 19:38:19 -0000 (UTC) From: Christian Weisgerber <naddy@mips.inka.de> To: freebsd-questions@freebsd.org Subject: Re: Swap on SSD Message-ID: <slrnp7mldb.66b.naddy@lorvorc.mips.inka.de> References: <alpine.OSX.2.21.1802051507540.42615@ary.qy> <de600d709ef24c7b65f22963d72040e6@roundcube.fjl.org.uk>
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On 2018-02-07, Frank Leonhardt <frank2@fjl.co.uk> wrote: > There seems to be some confusion on this list about swapping and paging. > Swapping is old hat. Basically when doing a context swap you wrote a > non-running process to a swap area to free up RAM space. We don't do > that anymore - we use demand paged virtual memory. Demand paging was introduced in UNIX 32V and entered the BSD line with 3BSD. That's around 1978-80, so almost forty years ago. -- Christian "naddy" Weisgerber naddy@mips.inka.de
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