From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josef Bacik Subject: Re: BTRFS: Unbelievably slow with kvm/qemu Date: Mon, 12 Jul 2010 16:24:25 -0400 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-Transfer-Encoding: QUOTED-PRINTABLE Cc: Josef Bacik , Michael Tokarev , linux-kernel@vger.kernel.org, linux-fsdevel , qemu-devel To: Giangiacomo Mariotti Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org 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 la= test kernel > > with the normal settings (which IIRC uses O_DIRECT), that should ma= ke things > > suck alot less. =A0Thanks, > > > > Josef > > > With latest kernel do you mean the current Linus' git tree? Because i= f > instead you're talking about the current stable kernel, that's the on= e > I used on my test. >=20 Yes Linus' git tree. Thanks, Josef