Bug#449471: cpu intensive playback

[Sebastian Dröge]

Am Freitag, den 09.11.2007, 16:01 +0100 schrieb Sven Arvidsson:
> On Mon, 2007-11-05 at 23:43 +0100, Bruno Kleinert wrote:
> > i've got an athlon 64 and an athlon xp, both with a "creative
> > soundblaster live!" pci sound card and an intel ac97 onboard sound
> > chip. on both machines playback works with a very low cpu load on the
> > sb live card. when i redirect the sound output to the onboard card,
> > rhythmbox eats up nearly exactly 50% of the cpu on both machines.
> > i used gconf's "musicadiosink" entry to redirect the music output, which
> > i had to point at 'alsasink device="hw:1,0"'. when i have rhythmbox use
> > a "dmix" virtual sound card on top of the onboard sound card, rhythmbox
> > does not use half of the cpu time.
> > here's my asound.conf for the onboard intel card:
> > 
> [ config snipped ]
> > 
> > i can reproduce the cpu-intensive behaviour, with rhythmbox
> > packages 0.11.2-1 and 0.10.1-1+b2. i didn't try any other versions of
> > the package.
> 
> Hi,
> 
> Is this specific to Rhythmbox, or does it happen with other GStreamer
> based players?
> 
> You should be able to try this by using a gstreamer pipeline, like this:
> 
>         gst-launch-0.10 playbin uri="file:///path/to/my/musicfile.ogg"
>         
> You will need the gstreamer0.10-tools package.

I'd assume this could be
http://bugzilla.gnome.org/show_bug.cgi?id=385061
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