Date: Thu, 30 May 2013 19:18:29 +0000 (UTC) From: jb <jb.1234abcd@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: "swap" partition leads to instability? Message-ID: <loom.20130530T210943-16@post.gmane.org> References: <1369558712.96152.YahooMailNeo@web165006.mail.bf1.yahoo.com> <loom.20130526T143506-872@post.gmane.org> <20130529133516.295084a6@gumby.homeunix.com> <loom.20130529T213928-77@post.gmane.org> <20130530160555.3104ced6@gumby.homeunix.com>
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RW <rwmaillists <at> googlemail.com> writes: > ... > > Yes, there is some confusion about the diff, if any, between paging > > and swapping. > > > > Paging - copying or moving pages between physical memory (RAM) and > > secondary storage (e.g. hard disk), in both directions. > > Swapping - nowdays is synonymous with "paging". > > But its history is as follows (per Wikipedia): > > This is a bit Linux-centric. > ... > You page-out pages and swap-out processes. > > When FreeBSD is very short of memory it swaps-out entire processes to > concentrate the memory in the running processes. Linux goes directly > from paging to killing processes. That was helpful - knowing the details of VMM implementation in various OSs helps understand the generalizations, with exceptions ... jb
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