From owner-freebsd-questions@FreeBSD.ORG Mon Dec 24 22:21:42 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 875D216A417 for ; Mon, 24 Dec 2007 22:21:42 +0000 (UTC) (envelope-from lists@webtent.net) Received: from esmtp.webtent.net (esmtp.webtent.net [208.38.145.5]) by mx1.freebsd.org (Postfix) with ESMTP id 56BC913C467 for ; Mon, 24 Dec 2007 22:21:42 +0000 (UTC) (envelope-from lists@webtent.net) Received: from localhost (localhost [127.0.0.1]) by esmtp.webtent.net (WebTent ESMTP Postfix Internet Mail Gateway) with ESMTP id B1CD77FA5E for ; Mon, 24 Dec 2007 17:21:41 -0500 (EST) Received: from esmtp.webtent.net ([127.0.0.1]) by localhost (mx1.webtent.net [127.0.0.1]) (amavisd-maia, port 10024) with ESMTP id 56875-10 for ; Mon, 24 Dec 2007 17:21:33 -0500 (EST) Received: from [70.110.70.43] (columbus.webtent.org [70.110.70.43]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by esmtp.webtent.net (WebTent ESMTP Postfix Internet Mail Gateway) with ESMTP id AF6687FC2A for ; Mon, 24 Dec 2007 17:21:33 -0500 (EST) From: Robert Fitzpatrick To: FreeBSD Content-Type: text/plain Organization: WebTent Networking, Inc. Date: Mon, 24 Dec 2007 17:21:32 -0500 Message-Id: <1198534892.11590.8.camel@columbus.webtent.org> Mime-Version: 1.0 X-Mailer: Evolution 2.12.1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: WebTent Mailguard 1.0.2a Subject: 4GB memory and more X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: robert@webtent.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Dec 2007 22:21:42 -0000 I have a couple of Supermicro servers and upgraded both with more memory. I upgraded our ESMTP server from 1GB to 4GB and our MX server from 2GB to 5GB. Below are the dmesg memory findings and, yes, I get the memory over 4GB ignored when booting up. The ESMTP even says that about 130MB is ignored. I was reading about building into the kernel PAE options for using above 4GB of memory, but in the dmesg I see PAE in the Features. Does this mean the support is there and I just need some BIOS tweaking? esmtp# dmesg Copyright (c) 1992-2005 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 5.4-RELEASE #1: Tue Dec 13 16:00:53 EST 2005 admin@esmtp.webtent.net:/usr/src/sys/i386/compile/WEBTENT Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2399.33-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf25 Stepping = 5 Features=0xbfebfbff Hyperthreading: 2 logical CPUs real memory = 4160225280 (3967 MB) avail memory = 4073279488 (3884 MB) mx1# dmesg Copyright (c) 1992-2007 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 6.2-RELEASE-p5 #0: Sat Jun 2 11:11:40 EDT 2007 root@mx1.webtent.net:/usr/obj/usr/src/sys/WEBTENT Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Xeon(TM) CPU 3.00GHz (3000.12-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf41 Stepping = 1 Features=0xbfebfbff Features2=0x641d> AMD Features=0x20100000 Logical CPUs per core: 2 real memory = 3220635648 (3071 MB) avail memory = 3150565376 (3004 MB) Thanks in advance. -- Robert