Bug#449471: cpu intensive playback

[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.

-- 
Cheers,
Sven Arvidsson
http://www.whiz.se
PGP Key ID 760BDD22
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