From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754627Ab0GLNmJ (ORCPT ); Mon, 12 Jul 2010 09:42:09 -0400 Received: from isrv.corpit.ru ([81.13.33.159]:43976 "EHLO isrv.corpit.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754607Ab0GLNmH (ORCPT ); Mon, 12 Jul 2010 09:42:07 -0400 Message-ID: <4C3B1BAC.1050907@msgid.tls.msk.ru> Date: Mon, 12 Jul 2010 17:42:04 +0400 From: Michael Tokarev User-Agent: Mozilla-Thunderbird 2.0.0.22 (X11/20090706) MIME-Version: 1.0 To: Josef Bacik CC: Giangiacomo Mariotti , linux-kernel@vger.kernel.org, linux-fsdevel , qemu-devel Subject: Re: BTRFS: Unbelievably slow with kvm/qemu References: <4C3ABF96.9070405@msgid.tls.msk.ru> <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> In-Reply-To: <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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, Um. Do you mean it were introduced in BTRFS or general? :) Because, wel, O_DIRECT is here and supported since some 2.2 times... ;) /mjt From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=57406 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OYJGq-0002z5-Iv for qemu-devel@nongnu.org; Mon, 12 Jul 2010 09:42:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OYJGp-00012w-CI for qemu-devel@nongnu.org; Mon, 12 Jul 2010 09:42:08 -0400 Received: from isrv.corpit.ru ([81.13.33.159]:42733) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OYJGp-00012n-5f for qemu-devel@nongnu.org; Mon, 12 Jul 2010 09:42:07 -0400 Message-ID: <4C3B1BAC.1050907@msgid.tls.msk.ru> Date: Mon, 12 Jul 2010 17:42:04 +0400 From: Michael Tokarev MIME-Version: 1.0 References: <4C3ABF96.9070405@msgid.tls.msk.ru> <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> In-Reply-To: <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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 , Giangiacomo Mariotti , linux-kernel@vger.kernel.org, qemu-devel 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, Um. Do you mean it were introduced in BTRFS or general? :) Because, wel, O_DIRECT is here and supported since some 2.2 times... ;) /mjt