From owner-freebsd-current@FreeBSD.ORG Mon Nov 21 03:40:28 2005 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6DA2216A41F; Mon, 21 Nov 2005 03:40:28 +0000 (GMT) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id CFB4943D55; Mon, 21 Nov 2005 03:40:26 +0000 (GMT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.13.1/8.13.3) id jAL3eP0h012375; Sun, 20 Nov 2005 21:40:25 -0600 (CST) (envelope-from dan) Date: Sun, 20 Nov 2005 21:40:25 -0600 From: Dan Nelson To: Paul Saab Message-ID: <20051121034025.GD41629@dan.emsphone.com> References: <20051120183309.ysgk624asksckwow@mail.bafirst.com> <20051121004749.GA39061@xor.obsecurity.org> <43812AC7.3020506@rogers.com> <20051121020816.GA19252@xor.obsecurity.org> <438136B5.9030506@freebsd.org> <20051121030915.GC41629@dan.emsphone.com> <43813BBE.2010302@freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43813BBE.2010302@freebsd.org> X-OS: FreeBSD 5.4-STABLE X-message-flag: Outlook Error User-Agent: Mutt/1.5.11 Cc: current@freebsd.org, "Chad Leigh -- Shire.Net LLC" , Kris Kennaway Subject: Re: avail memory is short by 1G on my FreeBSD 6.0-STABLE MP Dell 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: Mon, 21 Nov 2005 03:40:28 -0000 In the last episode (Nov 20), Paul Saab said: > Dan Nelson wrote: > >In the last episode (Nov 20), Paul Saab said: > >>Chad Leigh -- Shire.Net LLC wrote: > >>>I assume you are talking about the "phenomenon" of RAM "missing" > >>>due to PCI and other I/O mapping into the 4GB address space? What > >>>struck me about the OP is that the amount of RAM "missing" is more > >>>than I have ever seen due to this. My systems are usually > >>>3.4-3.6GB of RAM with 4GB installed, not 2.86GB (3005MB)... So > >>>are we sure that the PCI space mapping is the problem? > >> > >>Enable PAE and you'll get all your ram. > > > >Anyone know if it's possible for the kernel to determine if any RAM > >is mapped above the 4gb point and warn the user about how much > >memory is unaccessable without PAE? > > You mean like it does now? > "262144K of memory above 4GB ignored" That line didn't show up the the original poster's dmesg, though ( http://unixmania.com/dmesg_20051120.txt ). Maybe a verbose boot would shed more light. -- Dan Nelson dnelson@allantgroup.com