From owner-freebsd-stable@freebsd.org Fri Jul 24 07:03:34 2015 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DBE5C9A71F7 for ; Fri, 24 Jul 2015 07:03:34 +0000 (UTC) (envelope-from holm@freibergnet.de) Received: from bmail.freibergnet.de (bmail.freibergnet.de [46.4.195.14]) by mx1.freebsd.org (Postfix) with ESMTP id 935A91454; Fri, 24 Jul 2015 07:03:34 +0000 (UTC) (envelope-from holm@freibergnet.de) Received: from bmail.freibergnet.de (bmail.freibergnet.de [46.4.195.14]) by bmail.freibergnet.de (Postfix) with ESMTP id 6EF66929B069; Fri, 24 Jul 2015 09:02:47 +0200 (CEST) X-Virus-Scanned: amavisd-new at freibergnet.de Received: from bmail.freibergnet.de ([46.4.195.14]) by bmail.freibergnet.de (bmail.freibergnet.de [46.4.195.14]) (amavisd-new, port 10024) with LMTP id kf0lElkZZxlc; Fri, 24 Jul 2015 09:02:45 +0200 (CEST) Received: from beast.freibergnet.de (bmail.freibergnet.de [46.4.195.14]) by bmail.freibergnet.de (Postfix) with ESMTP id D28C5929A4FA; Fri, 24 Jul 2015 09:02:45 +0200 (CEST) Received: by beast.freibergnet.de (Postfix, from userid 201) id 4C5954B783C; Fri, 24 Jul 2015 09:02:45 +0200 (CEST) Date: Fri, 24 Jul 2015 09:02:45 +0200 From: Holm Tiffe To: Glen Barber Cc: freebsd-stable Subject: Re: 10.2-Beta i386..what's wrong..? Message-ID: <20150724070245.GC11640@beast.freibergnet.de> Mail-Followup-To: Holm Tiffe , Glen Barber , freebsd-stable References: <55B17B7A.4080402@gmail.com> <20150723234805.GK84931@FreeBSD.org> <55B18488.9060602@sorbs.net> <20150724004026.GA1370@lonesome.com> <20150724004343.GM84931@FreeBSD.org> <20150724004443.GC1370@lonesome.com> <20150724004939.GN84931@FreeBSD.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20150724004939.GN84931@FreeBSD.org> User-Agent: Mutt/1.4.2.3i X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Jul 2015 07:03:35 -0000 Glen Barber wrote: > On Thu, Jul 23, 2015 at 07:44:43PM -0500, Mark Linimon wrote: > > 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. > > > > There's a bit more to it than that. You *can* successfully run amd64 > ZFS system with certain tunings (vfs.kmem_max IIRC), but you also need > to adjust things like disabling prefetching with less than 4GB RAM > (accessible to the OS). > > So yeah, "more RAM" is always a thing in this playing field. > > Glen > ...more RAM? Always more RAM? Reality check please, this is an i386 Machine with 2 Gbytes. It has two of 3 sockets polluted with RAM Modules (1G), there is not that much Space to give it more RAM. i386 is a supported architecture as far as I know, ok it where nice to have in i386 with 8 Gigs of RAM but there are not much motherboards out here that would support this.. This remebers me to microsofts attemts to write Software, always more RAM and more CPU to fasten up endless loops.. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583 www.tsht.de, info@tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741