From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:58824)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <avi@redhat.com>) id 1TAiq7-0005mp-Hc
	for qemu-devel@nongnu.org; Sun, 09 Sep 2012 10:50:24 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <avi@redhat.com>) id 1TAiq6-0005FD-Dj
	for qemu-devel@nongnu.org; Sun, 09 Sep 2012 10:50:23 -0400
Received: from mx1.redhat.com ([209.132.183.28]:27434)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <avi@redhat.com>) id 1TAiq6-0005F1-5O
	for qemu-devel@nongnu.org; Sun, 09 Sep 2012 10:50:22 -0400
Message-ID: <504CACA2.7050203@redhat.com>
Date: Sun, 09 Sep 2012 17:50:10 +0300
From: Avi Kivity <avi@redhat.com>
MIME-Version: 1.0
References: <504A1C35.5070809@lotspeich.org> <504B23BB.2080407@web.de>
In-Reply-To: <504B23BB.2080407@web.de>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] Linux KVM, Windows 7 guest choppy sound
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: Jan Kiszka <jan.kiszka@web.de>
Cc: Erik Lotspeich <erik@lotspeich.org>, qemu-devel@nongnu.org

On 09/08/2012 01:53 PM, Jan Kiszka wrote:
> On 2012-09-07 18:09, Erik Lotspeich wrote:
>> Hi,
>> 
>> I apologize if this isn't the right venue for this message, but this
>> mailing list seems a bit more active than qemu-discuss.
>> 
>> Background:
>> I am running OpenSUSE 12.1. I fixed audio issues in VM guests by setting
>> the following in qemu.conf:
>> 
>> vnc_allow_host_audio = 1
>> 
>> I also set user= and group= to allow qemu-kvm to run as the same user as
>> I am logged in as. This allowed qemu-kvm to send audio to pulseaudio.
>> 
>> My issue:
>> I am using the ICH6 virtual audio driver in my VMs. In my Linux VMs, the
>> sound works perfectly without any issues. In my Windows 7 VM, the sound
>> works with the exception of static and choppiness in the audio. Has
>> anyone else seen this or have any ideas for a fix?
> 
> Known issue, likely unfixable in QEMU due to hard-coded constraints of
> the driver Windows uses (too small playback buffers).

Would using real-time priority for the guest improve things?

Of course that can be dangerous if the guest decides to spin and has as
many vcpus as you have cores.


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