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Date:      Mon, 26 Mar 2001 16:10:23 -0600
From:      Mike Meyer <mwm@mired.org>
To:        "Jason Mann" <jason_mann@blueyonder.co.uk>
Cc:        questions@freebsd.org
Subject:   Re: Large memory guide
Message-ID:  <15039.48719.481851.262178@guru.mired.org>
In-Reply-To: <47708313@toto.iv>

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Jason Mann <jason_mann@blueyonder.co.uk> types:
> I've been told there is a guide somewhere to configuring a FreeBSD system
> thats has lots of physical RAM.
> 
> In particular, I'm after information on how to configure my swap.
> 
> Anyone know where I can find this information?

Nope. In fact, you don't really want to know how to configure swap
with lots of physical RAM; you want to know how to configure swap for
the application mix (which you forgot to tell us about) you're going
to run on a box with lots of RAM.

Failing that, two guidelines: If you may need to capture kernel core
images of panics, you need two times the amount of RAM to get a core
image.

If you don't care about core images, and expect to never run out of
swap, then the system will work fine with no swap files. However,
running out of virtual is a rare edge condition and not well tested,
so it might behoove you to allocate some so you'll notice it's
swapping when you run out, rather than having programs start to fail
because you're out of virtual.

	<mike
--
Mike Meyer <mwm@mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.

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