From owner-freebsd-questions  Tue Nov 27  1:34:31 2001
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From: Mike Meyer <mwm@mired.org>
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Date: Tue, 27 Nov 2001 03:34:26 -0600
To: "Anthony Atkielski" <anthony@freebie.atkielski.com>
Cc: <questions@freebsd.org>
Subject: Re: Calculating swap file size
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[Context recovered from top posting.

Anthony Atkielski <anthony@freebie.atkielski.com> types:
> From: "Mike Meyer" <mwm@mired.org>
> > Anthony Atkielski <anthony@freebie.atkielski.com> types:
> > > Does FreeBSD resort to swap only when RAM is exhausted, or does it
> > > have to use the swap file all the time (as in a one-to-one VM
> > > mapping scheme)?
> > Neither. It doesn't do a ono-to-one VM scheme, but the system is
> > opportunistic about putting things on swap and tagging the page as
> > "free" if it can.
> If I understand you and others correctly, as long as all processes
> can be contained in RAM, swap space will never be used at all

No, that's not the case, and I didn't say that was the case. Please
see the FAQ, section 13, question 1, for more information on that.

	<mike
--
Mike Meyer <mwm@mired.org>			http://www.mired.org/home/mwm/
Q: How do you make the gods laugh?		A: Tell them your plans.

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