From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=49955 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OYPX2-0007on-U4 for qemu-devel@nongnu.org; Mon, 12 Jul 2010 16:23:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OYPX1-0004ON-U2 for qemu-devel@nongnu.org; Mon, 12 Jul 2010 16:23:16 -0400 Received: from mail-wy0-f173.google.com ([74.125.82.173]:50336) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OYPX1-0004O9-Pp for qemu-devel@nongnu.org; Mon, 12 Jul 2010 16:23:15 -0400 Received: by wyb35 with SMTP id 35so3925212wyb.4 for ; Mon, 12 Jul 2010 13:23:14 -0700 (PDT) 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: From: Giangiacomo Mariotti Content-Type: text/plain; charset=UTF-8 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: Josef Bacik Cc: linux-fsdevel , Michael Tokarev , linux-kernel@vger.kernel.org, qemu-devel On Mon, Jul 12, 2010 at 3:43 PM, Josef Bacik wrote: > > O_DIRECT support was just introduced recently, please try on the latest k= ernel > with the normal settings (which IIRC uses O_DIRECT), that should make thi= ngs > suck alot less. =C2=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 Giangiacomo