On Sat, 2008-01-26 at 17:59 -0800, Fernando Lopez-Lezcano wrote:
> Hi Ingo... back to testing.
> History:
>
> 2.6.23.x + rt has not been very usable for audio applications.
> 2.6.24-rt1: same so far.
>
> Why: Jack keeps printing "delayed..." messages and has xruns which means
> that somehow the timing is delayed more than what jack would think
> reasonable. As in the case with an old timing bug, the problem
> dissapears when booting the kernel with idle=poll. Other users of Planet
> CCRMA are able to replicate the behavior, which goes away with idle=poll
> or booting the machine with only one core. As a workaround I have been
> packaging 2.6.22.x but now I'm not able to use that as the old rt14
> patch, suitably tweaked results in a non working kernel.
>
> So it looks like, again, timing is getting skewed when the jack process
> jumps between cpus and thus jack sees timing jumps that are just not
> happenning.
>
> This is with a build based on 2.6.24 using as a base the latest Fedora
> rawhide source package plus 2.6.24-rt1.
Do you have a simple testcase? (one which doesn't entail installing
ccrma and becoming an audiophile)
-Mike
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
