Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932863AbZJHS3a (ORCPT ); Thu, 8 Oct 2009 14:29:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932703AbZJHS33 (ORCPT ); Thu, 8 Oct 2009 14:29:29 -0400 Received: from server.logic.univie.ac.at ([131.130.191.2]:52433 "EHLO server.logic.univie.ac.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932693AbZJHS33 (ORCPT ); Thu, 8 Oct 2009 14:29:29 -0400 X-Greylist: delayed 1753 seconds by postgrey-1.27 at vger.kernel.org; Thu, 08 Oct 2009 14:29:29 EDT Date: Thu, 8 Oct 2009 19:59:39 +0200 To: linux-kernel@vger.kernel.org Subject: Allocated Mem - 700MB missing Message-ID: <20091008175939.GA31126@logic.univie.ac.at> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.13 (2006-08-11) From: Andreas Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2490 Lines: 73 Hi experts! Where are the missing 700MB ??? (4GB installed) 700 MB is too much, that can't be only because of version-differences! I compared (unmodified) stable/testing kernels with Xen and OpenVZ-kernel: all out of main debian packages: Only3200: ---------- *Linux host 2.6.18-5-686 #1 SMP Mon Dec 24 16:41:07 UTC 2007 i686 GNU/Linux *Linux knoppix 2.6.24.4 #2 SMP PREEMPT Tue Mar 25 21:35:28 CET 2008 i686 GNU/Linux *Linux host 2.6.26-2-686 #1 SMP Sun Jun 21 04:57:38 UTC 2009 i686 GNU/Linux Full4GB: --------- *Linux host 2.6.26-2-openvz-686 #1 SMP Sun Jun 21 07:07:25 UTC 2009 i686 GNU/Linux I'm using: Dell Optiplex 755 Board Product name (DMI): 0GM819 2x2GB (4064MB) installed Here the output of free: #mem: Only3200free: total used free shared buffers cached Mem: 3358232 30760 3327472 0 1668 13608 -/+ buffers/cache: 15484 3342748 Swap: 0 0 0 #memOnly3200freeXenDom0.txt: total used free shared buffers cached Mem: 3873216 136068 3737148 0 1024 12852 -/+ buffers/cache: 122192 3751024 Swap: 0 0 0 #memOnly3900free-2.6.30.1-amd64.txt: total used free shared buffers cached Mem: 3920696 606612 3314084 0 14608 251372 -/+ buffers/cache: 340632 3580064 Swap: 7831676 0 7831676 #memFull4GBfree-OpenVZ (Dom0): total used free shared buffers cached Mem: 4003584 451420 3552164 0 8132 143652 -/+ buffers/cache: 299636 3703948 Swap: 0 0 0 I attached the output of dmesg and proc/meminfo of the normal kernel (only 3200M) and openVZ-kernel (gives full 4GBs) XenDom0 gives 3900, which is ok. i*)Question2: Do I have better performance, if installed to DIMM1+3 (next to each other) => Bios says: asynchronous, or DIMM1+2 (3 inbetween them left out) => Bios says: synchronous ? Please be so kind and also send your answer to andreas2 (AT) logic.univie.ac.at (I didn't subscribe to the group) thanks! Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/