From: Avi Kivity <avi@redhat.com>
To: Jan Kiszka <jan.kiszka@web.de>
Cc: Erik Lotspeich <erik@lotspeich.org>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Linux KVM, Windows 7 guest choppy sound
Date: Mon, 10 Sep 2012 12:12:01 +0300 [thread overview]
Message-ID: <504DAEE1.7060603@redhat.com> (raw)
In-Reply-To: <504DADA6.7090406@web.de>
On 09/10/2012 12:06 PM, Jan Kiszka wrote:
>>> 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.
>
> We need to decouple the data path of that device from the rest of QEMU
> first. Just prioritizing likely doesn't help.
Depends on what the guest is doing, but likely you are right. Luckily
we're already doing that.
> And then the problem might
> be getting sufficient reactivity from the QEMU-external audio data path
> as well.
Those already have realtime priority. Doesn't guarantee the path is
short enough but it may work.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-09-10 9:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-07 16:09 [Qemu-devel] Linux KVM, Windows 7 guest choppy sound Erik Lotspeich
2012-09-08 10:53 ` Jan Kiszka
2012-09-09 14:50 ` Avi Kivity
2012-09-10 9:06 ` Jan Kiszka
2012-09-10 9:12 ` Avi Kivity [this message]
[not found] ` <504F4948.3020809@lotspeich.org>
2012-09-11 14:34 ` Jan Kiszka
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