On Fri, Sep 25, 2009 at 3:58 AM, Erik Hofman <e...@ehofman.com> wrote:
>
> Olaf Flebbe wrote:
> > Erik,
> >
> > I would like to see an option to disable sound at all.
>
> The changes should make that easy. Actually it was the reason I started
> changing some code and decided it could use a real update in the end.
>
> > Did you know that the sound system eats up to 30% of CPU time, depending
> > on hardware? This even with --disable-sound on the command line.
>
> That's OpenAL version specific. Mine is twice as fast with 256 voices
> but 3.5 times more efficient with less than 32 voices.
>
On linux there are two implementations, the old one (OpenAL Sample
Implementation, last version was 0.0.8), which had several issues (including
broken Doppler), and the new OpenAL-Soft which most desktop distros are now
carrying.
Around 1.4 or 1.5 there were a few releases with new features that hadn't
been optimised, and that caused the high CPU usage, the situation has
improved greatly, Ubuntu is about to release again and therefore Ubuntu
users should have a lighter OpenAL-Soft this time around.
In any case, OpenAL should be using no processing if sound is disabled, I
will check why this is happening over the weekend (I was unabled to check
last night as I had planned).
Cheers,
Matt D.
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