Re: Dmix using more CPU than plug:hw

[Takashi Iwai <tiwai@suse.de>]

At Thu, 12 May 2005 20:08:48 +1000,
Erik de Castro Lopo wrote:
> 
> Takashi Iwai wrote:
> 
> > > > Does it still happen with 1.0.9rc3?
> 
> I haven't tried this yet. Whats involved with installing the alsa 
> drivers under a 2.6 kernel?

Installing alsa-driver 1.0.9rc3 is recommended together with alsa-lib
1.0.9rc3, but alsa-lib 1.0.9rc3 itself should work fine with alsa
drivers included in 2.6.11 or 12-rc* kernels.

> > That's bad.  I hope it got fixed now.
> > 
> > Anyway, this high CPU usage is usually solved when you run without
> > rate conversion in alsa-lib.  Specify 48000Hz for artsd or polyaudio.
> 
> With polypaudio I have tried forcing the rate to both 48000 and 44100
> (which is the only rate my iBook/Tumbler hardware actually accepts).
> In both cases, polypaudio chews up 100% if CPU time and gets killed
> within about 10 seconds.
> 
> Is this something that 1.0.9rc3 is likely to fix?

Might be...


Takashi


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