From owner-freebsd-hardware@FreeBSD.ORG Wed Aug 9 20:29:17 2006 Return-Path: X-Original-To: hardware@freebsd.org Delivered-To: freebsd-hardware@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9E8CB16A4DD for ; Wed, 9 Aug 2006 20:29:17 +0000 (UTC) (envelope-from j_guojun@lbl.gov) Received: from smtp104.sbc.mail.mud.yahoo.com (smtp104.sbc.mail.mud.yahoo.com [68.142.198.203]) by mx1.FreeBSD.org (Postfix) with SMTP id 2CDE543D45 for ; Wed, 9 Aug 2006 20:29:17 +0000 (GMT) (envelope-from j_guojun@lbl.gov) Received: (qmail 76233 invoked from network); 9 Aug 2006 20:29:16 -0000 Received: from unknown (HELO ?192.168.2.8?) (jinmtb@sbcglobal.net@68.127.183.0 with plain) by smtp104.sbc.mail.mud.yahoo.com with SMTP; 9 Aug 2006 20:29:16 -0000 Message-ID: <44DA45FA.3060306@lbl.gov> Date: Wed, 09 Aug 2006 13:30:50 -0700 From: "Jin Guojun [VFFS]" User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.5) Gecko/20050108 X-Accept-Language: en, zh, zh-CN MIME-Version: 1.0 To: Krassimir Slavchev References: <200608090908.k79988pY086073@fire.jhs.private> <44D9B553.6030003@bulinfo.net> In-Reply-To: <44D9B553.6030003@bulinfo.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Julian Stacey , hardware@freebsd.org Subject: Re: Real and available memory? X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Aug 2006 20:29:17 -0000 Krassimir Slavchev wrote: > ........ > >> > > I can't find anything related to video memory in the BIOS but it seems > to be correct > real memory = 120 Mb reported by the kernel. > My question is why the available memory is only 80Mb? Have every body looked your computer to see how many avaiable memory is there? 80 is a round-up number in 6.x release. I think it looks normal to me. It really depends on how the system is configured. Beside kernel memory, there is a number of wired memory blocks, which take away available memory. Below are some systems I can access -- (1) difference is 33MB FreeBSD 4.11-RELEASE #1: Mon Dec 26 22:56:54 PST 2005 Timecounter "i8254" frequency 1193182 Hz CPU: AMD Athlon(TM) XP 2100+ (1733.41-MHz 686-class CPU) ... real memory = 1073721344 (1048556K bytes) avail memory = 1039896576 (1015524K bytes) (2) difference is 28MB FreeBSD 6.1 CPU: AMD Turion(tm) 64 Mobile Technology ML-34 (1790.83-MHz K8-class CPU) Origin = "AuthenticAMD" Id = 0x20f42 Stepping = 2 ... real memory = 501874688 (478 MB) avail memory = 472735744 (450 MB) (3) difference is 340 MB Intel(R) Xeon(TM) CPU 3.06GHz hw.physmem: 2142212096 hw.usermem: 1785118720 -- ------------ Jin Guojun ----------- v --- jin@george.lbl.gov --- Distributed Systems Department http://www.dsd.lbl.gov/~jin Lawrence Berkeley National Laboratory, Berkeley, CA 94720