From owner-freebsd-stable@freebsd.org  Fri Jul 24 00:44:44 2015
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Date: Thu, 23 Jul 2015 19:44:43 -0500
From: Mark Linimon <linimon@lonesome.com>
To: Glen Barber <gjb@FreeBSD.org>
Cc: Brandon Allbery <allbery.b@gmail.com>,
 Michelle Sullivan <michelle@sorbs.net>,
 freebsd-stable <freebsd-stable@freebsd.org>,
 Jason Unovitch <jason.unovitch@gmail.com>, herbert@oslo.ath.cx
Subject: Re: 10.2-Beta i386..what's wrong..?
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On Fri, Jul 24, 2015 at 12:43:43AM +0000, Glen Barber wrote:
> Even on amd64, you need to tune the system with less than 4GB RAM.

The only correct answer to "how much RAM do you need to run ZFS" is
"always more" AFAICT.

mcl