From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([140.186.70.92]:38255)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <avi@redhat.com>) id 1RqOSj-0002F0-Uq
	for qemu-devel@nongnu.org; Thu, 26 Jan 2012 07:30:06 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <avi@redhat.com>) id 1RqOSe-0008Ly-6l
	for qemu-devel@nongnu.org; Thu, 26 Jan 2012 07:29:57 -0500
Received: from mx1.redhat.com ([209.132.183.28]:25162)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <avi@redhat.com>) id 1RqOSd-0008Lq-UM
	for qemu-devel@nongnu.org; Thu, 26 Jan 2012 07:29:52 -0500
Message-ID: <4F21473B.2000703@redhat.com>
Date: Thu, 26 Jan 2012 14:29:47 +0200
From: Avi Kivity <avi@redhat.com>
MIME-Version: 1.0
References: <1326637051-23920-1-git-send-email-avi@redhat.com>
	<4F12E232.5090809@web.de>
	<alpine.LFD.2.02.1201151529510.22278@bbs.intern>
	<4F130667.9050609@redhat.com>
	<alpine.LFD.2.02.1201252112200.24890@bbs.intern>
In-Reply-To: <alpine.LFD.2.02.1201252112200.24890@bbs.intern>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] [PATCH] kvm: flush the dirty log when
 unregistering a slot
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: Gerhard Wiesinger <lists@wiesinger.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>, Jan Kiszka <jan.kiszka@web.de>, qemu-devel@nongnu.org, kvm@vger.kernel.org

On 01/25/2012 10:15 PM, Gerhard Wiesinger wrote:
> On Sun, 15 Jan 2012, Avi Kivity wrote:
>
>> On 01/15/2012 04:40 PM, Gerhard Wiesinger wrote:
>>> On Sun, 15 Jan 2012, Jan Kiszka wrote:
>>>
>>>> On 2012-01-15 15:17, Avi Kivity wrote:
>>>>> Otherwise, the dirty log information is lost in the kernel forever.
>>>>>
>>>>> Fixes opensuse-12.1 boot screen, which changes the vga windows
>>>>> rapidly.
>>>>
>>>> Confirmed, problems solved here.
>>>
>>> Problem from:
>>> http://permalink.gmane.org/gmane.comp.emulators.qemu/131853
>>>
>>> Confirmed to be fixed, too. Long awaited patch :-)
>>
>> Sorry, I forgot about that.  Please ping me if I do that.
>>
>>>
>>> BTW: There is also a major difference in video performance:
>>> 1.) With Patch: 1400MB/s (MByte/s)
>>> 2.) Without Patch: 6MB/s
>>>
>>> Any reason for that?
>>
>> What are you measuring exactly?
>
> I'm measuring VGA video performance under DOS with own written test
> program.
>
> What's strange, new findings: Measurement doesn't depend on the patch.
> Sometimes it is high sometimes low. I think I have to investigate
> further.
>
> Any ideas?

What vga mode are you using?  What does the test program do?

-- 
error compiling committee.c: too many arguments to function