From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: raw disks no longer work in latest kvm (kvm-88 was fine) Date: Sat, 29 May 2010 06:34:48 -0400 Message-ID: <20100529103448.GB16311@infradead.org> References: <4BF8ED0C.2070004@nagafix.co.uk> <4BF91844.8030903@redhat.com> <4BF936BB.5000401@nagafix.co.uk> <4BF9391A.1080302@redhat.com> <4BF93EF5.5090106@nagafix.co.uk> <4BF945E4.8080209@redhat.com> <4BF9554D.3000100@nagafix.co.uk> <4C00E1A3.50109@nagafix.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Antoine Martin , Avi Kivity , Michael Tokarev , Christoph Hellwig , kvm@vger.kernel.org To: Stefan Hajnoczi Return-path: Received: from bombadil.infradead.org ([18.85.46.34]:47469 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754080Ab0E2Kev (ORCPT ); Sat, 29 May 2010 06:34:51 -0400 Content-Disposition: inline In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On Sat, May 29, 2010 at 10:55:18AM +0100, Stefan Hajnoczi wrote: > I would expect that aio=native is faster but benchmarks show that this > isn't true for all workloads. In what benchmark do you see worse results for aio=native compared to aio=threads?