Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755928Ab0GLNni (ORCPT ); Mon, 12 Jul 2010 09:43:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52673 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754648Ab0GLNng (ORCPT ); Mon, 12 Jul 2010 09:43:36 -0400 Date: Mon, 12 Jul 2010 09:49:11 -0400 From: Josef Bacik To: Michael Tokarev Cc: Josef Bacik , Giangiacomo Mariotti , linux-kernel@vger.kernel.org, linux-fsdevel , qemu-devel Subject: Re: BTRFS: Unbelievably slow with kvm/qemu Message-ID: <20100712134911.GC15754@dhcp231-156.rdu.redhat.com> References: <4C3ABF96.9070405@msgid.tls.msk.ru> <20100712134347.GB15754@dhcp231-156.rdu.redhat.com> <4C3B1BAC.1050907@msgid.tls.msk.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C3B1BAC.1050907@msgid.tls.msk.ru> User-Agent: Mutt/1.5.19 (2009-01-05) 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 05:42:04PM +0400, Michael Tokarev wrote: > 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... ;) Btrfs obviously. Josef -- 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/