Re: [linux-audio-user] Tickless?

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On Wed, Jan 31, 2007 at 04:00:24PM +0100, Florian Schmidt wrote:
> On Wednesday 31 January 2007 12:06, Ken Restivo wrote:
> > What's with this "tickless" timer option for the HPET? What is its effect
> > on audio/RT performance? Is it worth trying?
> >
> > Does it do anything on an Ingo-patched RT kernel anyway?
> >
> > -ken
>
> http://rt.wiki.kernel.org/index.php/Tickless_kernel
>
> Maybe it does some good though too, because generally the thoughput should
> increase because that little bit of code called the scheduler is not run
> additionally every 1/250 or 1/1000 sec. If i understand that correctly.
>

Wow, that's interesting. "Tickless" made a dramatic improvement in DSP usage! Instead of 65% at idle, it was more like 30%.

However, I'm still getting lots of crackles, and possibly better than tickless, possibly worse, I can't tell.

- -ken
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Received on Thu Feb 1 04:15:02 2007