From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Goirand Subject: Re: Debian linux-image-2.6.32-4-xen-amd64 2.6.32-11 doesn't boot with > 4 GiB; resets immediatelly, no log messages Date: Wed, 14 Apr 2010 06:27:37 +0800 Message-ID: <4BC4EFD9.2040806@goirand.fr> References: <20100408113422.GD4183@kepler.schwinge.homeip.net> <20100408133820.GA29832@phenom.dumpdata.com> <20100408221953.GG4183@kepler.schwinge.homeip.net> <4BBE5DF2.6040707@goop.org> <20100409180016.GA14029@kepler.schwinge.homeip.net> <4BBF7004.8000707@goop.org> <20100410221349.GM4183@kepler.schwinge.homeip.net> <4BC1013D.2020003@goop.org> <4BC19B2A.3040501@goirand.fr> <4BC375A9.1060904@goop.org> <4BC3C6E1.4010400@goirand.fr> <4BC4CB1A.3000101@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4BC4CB1A.3000101@goop.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Jeremy Fitzhardinge Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Jeremy Fitzhardinge wrote: > On 04/12/2010 06:20 PM, Thomas Goirand wrote: >> Then do you have an idea why "xm info" shows a bit more, 900 MB free / >> 3990 MB total, while "xm list" shows only a 2048 dom0 running??? I'm not >> talking about just few bytes here, but one third of my RAM gone ... >> What's going on? >> > > Is this immediately after boot, or have you started/shutdown some domains? > > Also, can you include the xen console output from "xm debug-keys m" as well? > > J Hi Jeremy, Let me explain again. After boot-up situation (running KDE 3.5 and typing this message), xm info shows 3990 RAM (I believe the 4GB is 4096MB, unless Xen counts RAM like HDD vendors...) and 645 MB free, and "xm list" shows that dom0 is using 3286 MB. Already, things are weird because 645 free + 3286 for the dom0 makes 3931 and not 3990, and I never asked that my dom0 takes anything (at boot-up it should take all the available memory). Then I do: xm mem-set Domain-0 2048 and then I get: xm list Domain-0: 2048 xm info Free RAM: 1627 That makes a total of 3675 MB, which is less than the total of what I had at boot time without using xm mem-set. Ever more weirdness: the amount of free RAM after a xm mem-set call does vary randomly each time I boot my laptop (a one year old Lenovo T500). Note that I tried upgrading to the very latest version of Xen and pv_ops kernel from the pkg-xen team, so I tried both kernel 2.6.32-10 / hypervisor 3.4.2-3 and kernel 2.6.32-11 / hypervisor 3.4.2-4. They both had the issue. I'm using them in Lenny (I rebuilt the Debian package from source to create my own backports, which I don't believe is an issue as the same thing has been uploaded to backports.org). "xm debug-keys m" shows nothing, when exactly should I type it (sorry, I'm not familiar with Xen debugging...). Thomas