From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=33788 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OYPYE-0000ce-7j for qemu-devel@nongnu.org; Mon, 12 Jul 2010 16:24:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OYPYC-0004Xm-46 for qemu-devel@nongnu.org; Mon, 12 Jul 2010 16:24:30 -0400 Received: from mx1.redhat.com ([209.132.183.28]:7979) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OYPYB-0004XS-S8 for qemu-devel@nongnu.org; Mon, 12 Jul 2010 16:24:28 -0400 Date: Mon, 12 Jul 2010 16:24:25 -0400 From: Josef Bacik Message-ID: <20100712202424.GC2881@localhost.localdomain> References: <4C3ABF96.9070405@msgid.tls.msk.ru> <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] Re: BTRFS: Unbelievably slow with kvm/qemu List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Giangiacomo Mariotti Cc: linux-fsdevel , Michael Tokarev , linux-kernel@vger.kernel.org, Josef Bacik , qemu-devel On Mon, Jul 12, 2010 at 10:23:14PM +0200, Giangiacomo Mariotti wrote: > On Mon, Jul 12, 2010 at 3:43 PM, Josef Bacik wrote: > > > > O_DIRECT support was just introduced recently, please try on the late= st kernel > > with the normal settings (which IIRC uses O_DIRECT), that should make= things > > suck alot less. =A0Thanks, > > > > 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. >=20 Yes Linus' git tree. Thanks, Josef