From owner-freebsd-questions@FreeBSD.ORG Wed Apr 25 00:21:29 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 426E716A406 for ; Wed, 25 Apr 2007 00:21:29 +0000 (UTC) (envelope-from solon@pyro.de) Received: from srv23.fsb.echelon.bnd.org (mail.pyro.de [83.137.99.96]) by mx1.freebsd.org (Postfix) with ESMTP id 0466613C458 for ; Wed, 25 Apr 2007 00:21:28 +0000 (UTC) (envelope-from solon@pyro.de) Received: from i577b73ba.versanet.de ([87.123.115.186] helo=FLASH) by srv23.fsb.echelon.bnd.org with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.63 (FreeBSD)) (envelope-from ) id 1HgVGC-0008tv-Jp for freebsd-questions@freebsd.org; Wed, 25 Apr 2007 02:21:28 +0200 Date: Wed, 25 Apr 2007 02:21:34 +0200 From: Solon Luigi Lutz X-Mailer: SecureBat! Lite (v2.12.4) Personal Organization: PyroDesign Berlin X-Priority: 3 (Normal) Message-ID: <488507560.20070425022134@pyro.de> To: freebsd-questions@freebsd.org In-Reply-To: <20070424182027.33d16b28.wmoran@potentialtech.com> References: <01d301c78699$d6a36820$0300020a@mickey> <20070424140528.95287ff4.wmoran@potentialtech.com> <021201c7869f$ee90fd70$0300020a@mickey> <3ee9ca710704241144n4ab349c6m901586e427b1ae0d@mail.gmail.com> <021c01c786a0$fe7e5510$0300020a@mickey> <20070424145433.734761db.wmoran@potentialtech.com> <20070424182027.33d16b28.wmoran@potentialtech.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re[2]: Memory >3.5GB not used? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Solon Luigi Lutz List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Apr 2007 00:21:29 -0000 Hello Bill, Wednesday, April 25, 2007, 12:20:27 AM, you wrote: >> > >> > Not all modules work with PAE. Read the example PAE kernel file for >> > information. >> > >> > PAE is an awful hack, BTW. I've heard a number of people complain that >> > performance sucks under PAE. >> BM> Does this test demonstrate usage of memory over 4G? It's my understanding BM> that PAE starts to suffer when it has to look at the memory over 4G (which BM> is the problem it's intended to solve) BM> If your entire test fits in under 4G, you're not seeing the worst of it. BM> At least, that's my understanding of the issue. Don't mind - since you don't want to use PAE. There are a bunch of devices, namely network cards, who will cease to work properly on a SMP PAE kernel. Get a AMD64 motherboard or limit the amount of PCI cards to the absolute minimum; depending on how many/what cards you have installed, they allocate more or less memory out of the possible 4 GB PCI mem-space. Best regards, Solon Lutz +-----------------------------------------------+ | PyroDesign Berlin - Creativity for tomorrow | | Wasgenstrasse 75/13 - 14129 Berlin, Germany | | www.pyro.de - phone + 49 - 30 - 48 48 58 58 | | info@pyro.de - fax + 49 - 30 - 80 94 03 52 | +-----------------------------------------------+ mailto:solon@pyro.de