From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Gregory Haskins" Subject: Re: [PATCH 00/10] in-kernel APIC v3 (kernel side) Date: Sun, 13 May 2007 09:59:45 -0400 Message-ID: <4646E16D.BA47.005A.0@novell.com> References: <20070510123831.10200.4769.stgit@novell1.haskins.net> <64F9B87B6B770947A9F8391472E032160BBA66AF@ehost011-8.exch011.intermedia.net> <4642E39D.BA47.005A.0@novell.com> <64F9B87B6B770947A9F8391472E032160BC745D3@ehost011-8.exch011.intermedia.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: , "Dor Laor" Return-path: In-Reply-To: <64F9B87B6B770947A9F8391472E032160BC745D3-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org >>> On Sun, May 13, 2007 at 4:00 AM, in message <64F9B87B6B770947A9F8391472E032160BC745D3-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>, "Dor Laor" wrote: > > Superb results, when I run the old in- kernel apic I got much higher idle > cpu consumtion. I know that's vmenter- vmexit latency was drastically > improved but 0- 1% cpu consumption for winxp 32 bit sounds too good to be > true. > Are you sure an ACPI HAL is used in the guest? (can be checked by > looking at the computer node in the device manager). I did a clean install and didn't change it over to StandardPC. The Control Panel says "ACPI Uniprocessor PC" or something like that (recalling from memory right now). As a third datapoint, I am seeing the TPR changing rapidly (which I would expect 0 changes if the ACPI stuff was disabled). > I noticed the kvm_stat below, there are no mmio exits. You need to > update the statistics. Yeah, this is fixed in my latest code which I will send out soon. I actually added a "light_mmio" and "apic_mmio" stat so we can tell the difference. I left mmio_exits to count the ones that go to userspace. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/