From owner-freebsd-questions@FreeBSD.ORG Fri Aug 24 19:48:35 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 0BB6316A418 for ; Fri, 24 Aug 2007 19:48:35 +0000 (UTC) (envelope-from peter.schuller@infidyne.com) Received: from proxy3.bredband.net (proxy3.bredband.net [195.54.101.73]) by mx1.freebsd.org (Postfix) with ESMTP id C2A6513C469 for ; Fri, 24 Aug 2007 19:48:34 +0000 (UTC) (envelope-from peter.schuller@infidyne.com) Received: from prometheus.scode.org (85.229.22.84) by proxy3.bredband.net (7.3.127) id 46CDAD590005CAAF for freebsd-questions@freebsd.org; Fri, 24 Aug 2007 21:48:33 +0200 Received: from localhost (localhost [127.0.0.1]) by prometheus.scode.org (Postfix) with ESMTP id 4EB651CC7B for ; Fri, 24 Aug 2007 21:48:37 +0200 (CEST) From: Peter Schuller To: freebsd-questions@freebsd.org Date: Fri, 24 Aug 2007 21:48:36 +0200 User-Agent: KMail/1.9.7 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708242148.36791.peter.schuller@infidyne.com> Subject: Dell 2950: 4GB not seen (amd64; works on other 2950:s) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Aug 2007 19:48:35 -0000 Hello, I have a Dell 2950 where my 7-CURRENT amd64 FreeBSD does not see all visible memory. It has 4 GB of physical RAM. dmesg on boot includes: usable memory = 4280811520 (4082 MB) avail memory = 4117716992 (3926 MB) Yet summing memories visible in top yields ~ 2100 MB. Of note is that I have 6.2/amd64 on several other 2950:s with 4GB of RAM which say on boot: real memory = 5100273664 (4864 MB) avail memory = 4122443776 (3931 MB) But has all 4 GB visible in top. Unfortunately I failed to notice this until after the machine has begun being used, so I have limited possibilities for rebooting/mucking with BIOS settings. I was hoping someone could suggest something right off the bat. In addition on the problem machine the following sysctl values are present: hw.physmem: 4280811520 hw.usermem: 3628220416 hw.realmem: 5100273664 hw.cbb.start_memory: 2281701376 hw.pci.host_mem_start: 2147483648 With hw.usermem being slightly higher (but not 2 GB higher) on the 6.2 system without a problem: hw.physmem: 4283285504 hw.usermem: 3998797824 hw.realmem: 5100273664 hw.cbb.start_memory: 2281701376 hw.pci.host_mem_start: 2147483648 I was under the impression that memory visibility issues were a thing of the past on amd64. Any insight? Thanks! -- / Peter Schuller PGP userID: 0xE9758B7D or 'Peter Schuller ' Key retrieval: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org