From owner-freebsd-stable@FreeBSD.ORG Sat Apr 21 20:31:42 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 4D5C516A401 for ; Sat, 21 Apr 2007 20:31:42 +0000 (UTC) (envelope-from matrix@itlegion.ru) Received: from corpmail.itlegion.ru (corpmail.itlegion.ru [84.21.226.211]) by mx1.freebsd.org (Postfix) with SMTP id 8CBA513C44B for ; Sat, 21 Apr 2007 20:31:41 +0000 (UTC) (envelope-from matrix@itlegion.ru) Received: (qmail 9297 invoked from network); 22 Apr 2007 00:31:39 +0400 Received: from unknown (HELO Artem) (192.168.0.12) by 84.21.226.211 with SMTP; 22 Apr 2007 00:31:39 +0400 X-AntiVirus: Checked by Dr.Web [version: 4.33, engine: 4.33.5.10110, virus records: 195590, updated: 21.04.2007] Message-ID: <000c01c78454$0e8c1810$0c00a8c0@Artem> From: "Artem Kuchin" To: "Andrew Pantyukhin" References: <004b01c78421$062195c0$0c00a8c0@Artem> Date: Sun, 22 Apr 2007 00:31:32 +0400 Organization: IT Legion MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="UTF-8"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Cc: freebsd-stable@freebsd.org Subject: Re: PAE does not give any ram increase, why? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Apr 2007 20:31:42 -0000 Andrew Pantyukhin wrote: > On 4/21/07, Artem Kuchin wrote: >> Hello! >> >> I've upgraded one of my servers today. >> Now it is >> Asus P5p800-VM >> Pentium D 3.0Ghz >> 4GB RAM (4x1 GB) >> 3WARE raid5 >> >> FreebSD 6.2 cvsed today compiled from sources. >> >> after that i decided to try PAE. It runs just fine but >> when i compare available memory with and without >> pae i do not see any difference. >> >> At kernel boot with PAE it says: >> >> pr 21 18:01:30 osiris kernel: ACPI APIC Table: >> Apr 21 18:01:30 osiris kernel: Timecounter "i8254" frequency 1193182 >> Hz quality 0 >> Apr 21 18:01:30 osiris kernel: CPU: Intel(R) Pentium(R) D CPU >> 3.00GHz (3000.33-MHz 686-class CPU) Apr 21 18:01:30 osiris kernel: >> Origin = "GenuineIntel" Id = 0xf64 Stepping = 4 >> Apr 21 18:01:30 osiris kernel: >> Features=0xbfebfbff> Apr 21 18:01:30 osiris kernel: >> Features2=0xe49d,> >> Apr 21 18:01:30 osiris kernel: AMD Features=0x20000000 >> Apr 21 18:01:30 osiris kernel: AMD Features2=0x1 >> Apr 21 18:01:30 osiris kernel: Cores per package: 2 >> Apr 21 18:01:30 osiris kernel: real memory = 4017881088 (3831 MB) >> Apr 21 18:01:30 osiris kernel: avail memory = 3933429760 (3751 MB) >> >> The real and avail memory sizes are the same w/o PAE. >> >> Then i do >> sysctl -a | grep hw | grep mem >> >> and i always see >> hw.physmem: 4012244992 >> hw.usermem: 3861307392 >> hw.realmem: 4017881088 >> hw.pci.host_mem_start: 2147483648 >> >> the number do not change with or without PAE >> >> Maybe i look in the wrong place? > > What number do you expect to see? 8Gb? I expect to see DIFFERENCE (in particular INCREASE) in amount of memory with PAE comparing to kernel w/o PAE. And 4 GB = 1024*4 MB = 1024*1024*4 KB = = 1024*1024*1024*4=4294967296 So, where is my 277086208 bytes? (ieven is built-in video eats 128MB for AGP aperture then still whene is my another almost 120MB?) -- Regards, Artem