From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=56863 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OoZdx-0001hh-2Y for qemu-devel@nongnu.org; Thu, 26 Aug 2010 06:25:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OoZdv-0007D7-UO for qemu-devel@nongnu.org; Thu, 26 Aug 2010 06:25:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:16995) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OoZdv-0007Cz-Mx for qemu-devel@nongnu.org; Thu, 26 Aug 2010 06:25:11 -0400 Date: Thu, 26 Aug 2010 13:25:07 +0300 From: Gleb Natapov Subject: Re: [Qemu-devel] Re: qemu-kvm faster than qemu? Message-ID: <20100826102507.GS10499@redhat.com> References: <4C7573A2.8030708@codemonkey.ws> <4C75A736.80005@codemonkey.ws> <4C761D77.4090206@redhat.com> <20100826075921.GR10499@redhat.com> <4C763B05.9040107@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alexander Graf Cc: walt , Gerd Hoffmann , qemu-devel@nongnu.org On Thu, Aug 26, 2010 at 12:24:11PM +0200, Alexander Graf wrote: > > On 26.08.2010, at 11:59, Gerd Hoffmann wrote: > > > On 08/26/10 09:59, Gleb Natapov wrote: > >> On Thu, Aug 26, 2010 at 09:53:27AM +0200, Gerd Hoffmann wrote: > >>> Hi, > >>> > >>>> Also try qemu-kvm with -no-kvm-irqchip. I can't believe an in-kernel > >>>> lapic would make this much of a difference with windows 7 but it's worth > >>>> trying. > >>> > >>> Didn't try win7, but for winxp it is a *huge* difference. > >>> > >> On which HW? > > > > Intel without ept. It's a Lenovo T500. > > > >> My guess is this is because of tpr patching. > > > > Most like, yes. > > Isn't that only required on SVM? > No, old vmx too. -- Gleb.