From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:47248)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1XHXmm-0002bO-F4
	for qemu-devel@nongnu.org; Wed, 13 Aug 2014 08:36:21 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1XHXmd-0001TA-EF
	for qemu-devel@nongnu.org; Wed, 13 Aug 2014 08:36:12 -0400
Received: from mail-wg0-x22b.google.com ([2a00:1450:400c:c00::22b]:37789)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1XHXmd-0001T6-70
	for qemu-devel@nongnu.org; Wed, 13 Aug 2014 08:36:03 -0400
Received: by mail-wg0-f43.google.com with SMTP id l18so10987372wgh.2
	for <qemu-devel@nongnu.org>; Wed, 13 Aug 2014 05:36:02 -0700 (PDT)
Sender: Paolo Bonzini <paolo.bonzini@gmail.com>
Message-ID: <53EB5BA8.7080908@redhat.com>
Date: Wed, 13 Aug 2014 14:35:52 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
MIME-Version: 1.0
References: <1407209598-2572-1-git-send-email-ming.lei@canonical.com>	<20140805094844.GF4391@noname.str.redhat.com>	<CACVXFVMeu9N9OnTcfGV3EC5HOSBxaxrz2R_aodDG43gusS1dow@mail.gmail.com>	<20140805134815.GD12251@stefanha-thinkpad.redhat.com>	<20140805144728.GH4391@noname.str.redhat.com>	<CACVXFVOyaoHXYpuayk8vOQpUCZ0rjD2rMTKG-wxCKokfarGr_w@mail.gmail.com>	<20140806084855.GA4090@noname.str.redhat.com>	<20140810114624.0305b7af@tom-ThinkPad-T410>	<53E91B5D.4090009@redhat.com>
	<CACVXFVPSXrnCCuTBOeG5UutXuXHrVYwdps4NvXZu59-3R-+J0g@mail.gmail.com>
In-Reply-To: <CACVXFVPSXrnCCuTBOeG5UutXuXHrVYwdps4NvXZu59-3R-+J0g@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] [PATCH v1 00/17] dataplane: optimization and multi
 virtqueue support
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Ming Lei <ming.lei@canonical.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Fam Zheng <famz@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, Stefan Hajnoczi <stefanha@redhat.com>

Il 13/08/2014 13:43, Ming Lei ha scritto:
>> > The below patch is basically the minimal change to bypass coroutines.  Of course
>> > the block.c part is not acceptable as is (the change to refresh_total_sectors
>> > is broken, the others are just ugly), but it is a start.  Please run it with
>> > your fio workloads, or write an aio-based version of a qemu-img/qemu-io *I/O*
>> > benchmark.
> I have to say this approach is much cleaver, and better than mine, and
> I just run a quick fio randread test in VM, and IOPS can improve > 10%
> than bypass coroutine patch.

Great, do you have a profile without and with the patch?

Paolo