From owner-freebsd-current@FreeBSD.ORG Fri Aug 24 14:17:10 2012 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CD6831065673; Fri, 24 Aug 2012 14:17:10 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from bigwig.baldwin.cx (bigknife-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:75::2]) by mx1.freebsd.org (Postfix) with ESMTP id A1B948FC19; Fri, 24 Aug 2012 14:17:10 +0000 (UTC) Received: from jhbbsd.localnet (unknown [209.249.190.124]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 0D9C6B91E; Fri, 24 Aug 2012 10:17:10 -0400 (EDT) From: John Baldwin To: "Dag-Erling =?utf-8?q?Sm=C3=B8rgrav?=" Date: Fri, 24 Aug 2012 10:13:48 -0400 User-Agent: KMail/1.13.5 (FreeBSD/8.2-CBSD-20110714-p17; KDE/4.5.5; amd64; ; ) References: <502831B7.1080309@freebsd.org> <201208240748.19737.jhb@freebsd.org> <866288laq0.fsf@ds4.des.no> In-Reply-To: <866288laq0.fsf@ds4.des.no> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <201208241013.48805.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (bigwig.baldwin.cx); Fri, 24 Aug 2012 10:17:10 -0400 (EDT) Cc: alc@freebsd.org, freebsd-current@freebsd.org, Colin Percival Subject: Re: Time to bump default VM_SWZONE_SIZE_MAX? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Aug 2012 14:17:10 -0000 On Friday, August 24, 2012 8:45:43 am Dag-Erling Sm=C3=B8rgrav wrote: > John Baldwin writes: > > Note that on i386 you can't get more than 4GB of RAM without PAE, and i= f you > > have any modern x86 box with > 4GB of RAM, you are most likely running = amd64 > > on it, not i386. I think i386 would be fine to just keep the limit it = had. >=20 > The limit we had was insufficient for 8 GB of swap. In absolute or practical terms? Not all swap blocks are fully utilized. At Y! the install script we used would compute the maximum theoretical swap zo= ne needed and then cut it in half, and this worked quite well. Also, keep in = mind, this is for i386, not amd64. At this point i386 is going to be used on sma= ller systems (e.g. netbooks, etc.), not servers that have lots of swap. =2D-=20 John Baldwin