From owner-freebsd-performance@FreeBSD.ORG Tue May 6 08:14:06 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8FF3A37B401 for ; Tue, 6 May 2003 08:14:06 -0700 (PDT) Received: from otter3.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id AC94643F75 for ; Tue, 6 May 2003 08:14:05 -0700 (PDT) (envelope-from anderson@centtech.com) Received: from centtech.com (electron.centtech.com [204.177.173.173]) by otter3.centtech.com (8.12.3/8.12.3) with ESMTP id h46FE456015830; Tue, 6 May 2003 10:14:04 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <3EB7D12A.2000104@centtech.com> Date: Tue, 06 May 2003 10:13:46 -0500 From: Eric Anderson User-Agent: Mozilla/5.0 (X11; U; Linux i386; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Terry Lambert References: <3801.172.182.185.39.1052141430.squirrel@bluhayz.homeunix.org> <20030505180224.M13866@xy.hartford.edu> <3EB6A981.1030504@centtech.com> <3EB7353F.373470F2@mindspring.com> <3EB7B156.2030701@centtech.com> <3EB7CEE9.BBB2A626@mindspring.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-performance@freebsd.org cc: Kyle Rollin Subject: Re: Real and availible RAM X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 May 2003 15:14:06 -0000 Terry Lambert wrote: > Eric Anderson wrote: > >>I think you missed my point - I wasn't saying that FreeBSD is hiding >>anything, nor was I talking about the "missing 6mb problem" directly. >>You pretty much repeated my point though - "Since the BIOS is where >>FreeBSD obtains the "real memory" number" - which is what I said, that >>the BIOS takes the physical RAM, subtracts what it needs for devices >>like video cards (that "borrow" from physical main memory), then reports >>that result to any OS/Apps/etc that ask for it. That is why my system >>doesn't show the 256Mb of memory it has in it, it shows something like >>224Mb (32Mb is set aside for the video card).. >> >>Unless I am totally missing your point this morning.. :) > > > You are. The video memory you are talking about in this case is > accounted for by the AGP or a similar video driver. It is not > sucked up by the BIOS. At most, the BIOS will "eat" a few K > (usually, no more than 4K) that is unknown to the OS. Ahh.. right you are.. thanks for the correction.. > Again, you really need to read the machdep.c code, particularly > the "memsize()" function. Yep - I see now.. thanks for the pointer (again). Eric -- ------------------------------------------------------------------ Eric Anderson Systems Administrator Centaur Technology Attitudes are contagious, is yours worth catching? ------------------------------------------------------------------