From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Tokarev <mjt@tls.msk.ru>
Subject: Re: KVM: High CPU load with audio enabled
Date: Tue, 09 Nov 2010 02:48:40 +0300
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References: <20101108133310.NDW2tl7gaq4uLMdHXOT0UP@consulting.lsexperts.de>
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To: Stefan Pietsch <stefan.pietsch@lsexperts.de>
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08.11.2010 15:40, Stefan Pietsch wrote:
> Hi,
> 
> I'm running a Windows XP guest in KVM. After enabling the audio support
> (-soundhw es1370) the CPU load of the KVM process in the host system
> goes up to 100%.
> 
> Tested with: qemu-kvm-0.13.0 Debian 0.13.0+dfsg-1
> 
> KVM start command: kvm -m 512 -hda xp.img -soundhw es1370
> 
> Did you experience similar problems?

Yes, sound in 0.13 appears to be broken.  It is looping in
select/read loop forever, read returns EAGAIN and select
says the filedescriptor is ready.

/mjt