Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752880Ab0GLUXS (ORCPT ); Mon, 12 Jul 2010 16:23:18 -0400 Received: from mail-ww0-f44.google.com ([74.125.82.44]:41921 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751352Ab0GLUXQ convert rfc822-to-8bit (ORCPT ); Mon, 12 Jul 2010 16:23:16 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=VCh/JI7vrI3otFKVVwt+/5dZGhffxLeC0P9s2lM9rhTeyZOT2xTqXXMNVsQ39D+OSp 23fBPfzN9IPyRO7jLRxsX9XYhEpUmPvJwaD/V8xRbTDOpi6i+aZmI/GI8OkJvZOp+lEa OMGImuCvjle296KdW0jeVEcE6ttqjvt2m8REE= MIME-Version: 1.0 In-Reply-To: <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> References: <4C3ABF96.9070405@msgid.tls.msk.ru> <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> Date: Mon, 12 Jul 2010 22:23:14 +0200 Message-ID: Subject: Re: BTRFS: Unbelievably slow with kvm/qemu From: Giangiacomo Mariotti To: Josef Bacik Cc: Michael Tokarev , linux-kernel@vger.kernel.org, linux-fsdevel , qemu-devel Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 696 Lines: 19 On Mon, Jul 12, 2010 at 3:43 PM, Josef Bacik wrote: > > O_DIRECT support was just introduced recently, please try on the latest kernel > with the normal settings (which IIRC uses O_DIRECT), that should make things > suck alot less.  Thanks, > > Josef > With latest kernel do you mean the current Linus' git tree? Because if instead you're talking about the current stable kernel, that's the one I used on my test. -- Giangiacomo -- 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/