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Description of problem:
Windows 7 guest.
When running qemu without an audio device, and trying to play a movie using vlc,
the host cpu usage is 100%, and the video play is v-e-r-y slow.
After disabling the audio track (via vlc menu), the cpu usage is < 50% and the video is viewable.
Windows media player works fine.
When starting qemu with an audio device there is no problem.
Tried it with and without spice and qxl - same problem.
My command line:
qemu-system-x86_64 -drive file=/images/win7_rhel6.qcow2 -m 1024 -enable-kvm -net tap,ifname=WINXP2,script=/local/scripts/lan-ifup -net nic,macaddr=00:1a:4a:01:00:e0,model=virtio -device virtio-serial -snapshot -no-shutdown -chardev spicevmc,id=vdagent,debug=0,name=vdagent -device virtserialport,chardev=vdagent,name=com.redhat.spice.0
Version-Release number of selected component (if applicable):
qemu-kvm-0.12.1.2-2.209.el6
(In reply to comment #0)
> Description of problem:
> Windows 7 guest.
> When running qemu without an audio device, and trying to play a movie using
> vlc,
> the host cpu usage is 100%, and the video play is v-e-r-y slow.
> After disabling the audio track (via vlc menu), the cpu usage is < 50% and the
> video is viewable.
> Windows media player works fine.
> When starting qemu with an audio device there is no problem.
> Tried it with and without spice and qxl - same problem.
Could it be a VLC issue?
Which audio device have you used?
(In reply to comment #3)
> (In reply to comment #0)
> > Description of problem:
> > Windows 7 guest.
> > When running qemu without an audio device, and trying to play a movie using
> > vlc,
> > the host cpu usage is 100%, and the video play is v-e-r-y slow.
> > After disabling the audio track (via vlc menu), the cpu usage is < 50% and the
> > video is viewable.
> > Windows media player works fine.
> > When starting qemu with an audio device there is no problem.
> > Tried it with and without spice and qxl - same problem.
>
> Could it be a VLC issue?
It might be
> Which audio device have you used?
without audio device