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From: Christian Weisgerber <naddy@mips.inka.de>
Newsgroups: list.freebsd.questions
Subject: Re: Swap on SSD
Date: Wed, 7 Feb 2018 19:38:19 -0000 (UTC)
Message-ID: <slrnp7mldb.66b.naddy@lorvorc.mips.inka.de>
References: <alpine.OSX.2.21.1802051507540.42615@ary.qy>
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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