From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:44149) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R1fJK-0007Ce-Ks for qemu-devel@nongnu.org; Thu, 08 Sep 2011 10:10:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R1fJB-0005P9-9I for qemu-devel@nongnu.org; Thu, 08 Sep 2011 10:10:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47526) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R1fJA-0005P1-UH for qemu-devel@nongnu.org; Thu, 08 Sep 2011 10:10:25 -0400 Message-ID: <4E68CD7E.2050704@redhat.com> Date: Thu, 08 Sep 2011 16:13:18 +0200 From: Kevin Wolf MIME-Version: 1.0 References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 0/2] improve qemu-img conversion performance List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Yehuda Sadeh Cc: sage@newdream.net, ceph-devel@vger.kernel.org, yehudasa@gmail.com, qemu-devel@nongnu.org Am 08.09.2011 01:06, schrieb Yehuda Sadeh: > The following set of patches improve the qemu-img conversion process > performance. When using a higher latency backend, small writes have a > severe impact on the time it takes to do image conversion. > We switch to using async writes, and we avoid splitting writes due to > holes when the holes are small enough. > > Yehuda Sadeh (2): > qemu-img: async write to block device when converting image > qemu-img: don't skip writing small holes > > qemu-img.c | 34 +++++++++++++++++++++++++++------- > 1 files changed, 27 insertions(+), 7 deletions(-) > This doesn't seem to be against git master or the block tree. Please rebase. I think that commit a22f123c may obsolete your patch 2/2. Kevin