Date: Thu, 6 Sep 2001 06:53:19 -0400 From: Andrew J Caines <A.J.Caines@halplant.com> To: Ceri <ceri@techsupport.co.uk> Cc: freebsd-questions@FreeBSD.org Subject: Re: Good practice for /tmp Message-ID: <20010906065319.R55388@hal9000.servehttp.com> In-Reply-To: <20010906111353.C2758@cartman.private.techsupport.co.uk>; from ceri@techsupport.co.uk on Thu, Sep 06, 2001 at 11:13:53AM %2B0100 References: <craig@allmaui.com> <20010904221809.B57312B@usul.nersc.gov> <20010905183015.A824@hades.hell.gr> <20010906094931.B30676@cartman.private.techsupport.co.uk> <20010906051207.O55388@hal9000.servehttp.com> <20010906104359.E30676@cartman.private.techsupport.co.uk> <20010906055708.P55388@hal9000.servehttp.com> <20010906111353.C2758@cartman.private.techsupport.co.uk>
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Ceri, > Maybe I have a very naive view of the VM structure, or maybe I need more > coffee, but my brain is having a hard time here. I'm no Kirk McKusick, so I'm going on my understanding which may not be perfect. I've not had my morning tea yet. > If you're using a lot of swap then presumably it's because you don't > have a lot of free RAM Yes, but... > so paging out the contents of RAM into other RAM makes me uncomfortable Pages are swapped between RAM and disk - that's what paging and swapping mean, at least in the usual VM=RAM+disk case. This doesn't have anything to do with filesystems, though. > because what happens when you run out ? Most unix systems start killing processes at this point. > Mind you, I suppose you could also run out of swap on disk as well Swap is disk, unless you swap to NFS or other storage. > that's probably what you're saying isn't it Um.. I'm not sure. > I wonder how deep I can make this hole now I've started ... Never fear looking ignorant when learning. It doesn't matter that you don't know, only that you are trying to learn. I say this from frequent personal experience. -Andrew- -- ______________________________________________________________________ | -Andrew J. Caines- Unix Systems Engineer A.J.Caines@halplant.com | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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