From owner-freebsd-current@FreeBSD.ORG  Wed May 23 08:55:32 2007
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Date: Wed, 23 May 2007 08:55:32 +0000
From: Darren Reed <darrenr@freebsd.org>
To: Vince <jhary@unsane.co.uk>
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Cc: freebsd-fs@freebsd.org, Craig Boston <craig@xfoil.gank.org>,
	freebsd-current@freebsd.org, Pawel Jakub Dawidek <pjd@freebsd.org>,
	Kris Kennaway <kris@obsecurity.org>
Subject: Re: ZFS committed to the FreeBSD base.
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On Tue, May 22, 2007 at 10:01:17AM +0100, Vince wrote:
...
> I may reinstall at a later date as this is still very much a box to play
> with, but I gather there is no great gain from going 64 bit other than
> not having to play with PAE if you've got lots or RAM.

It's not RAM that ZFS really likes but your KVA (Kernel Virtual Address)
space.  With a 32bit kernel you are more likely to experience problems
with KVA shortage than you are RAM shortage when using ZFS.

Darren