[LAU] OS for realtime operation

Hartmut Noack zettberlin at linuxuse.de
Mon Jan 9 17:29:19 UTC 2012

Am 09.01.2012 15:24, schrieb Moshe Werner:
> Hi everyone,
> after many years of studio work using the openSuse distro with the
> kernel-rt from Jan Engelhard it seems that he no longer continues his great
> work on rt kernels.

This made me somewhat puzzeled too until I tried the kernel desktop for 
Suse to find out, that it delivers real good.

I have virtually the same results on the same machine. The only 
difference is, that the desktop-kernel is not the same as solid if Jack 
is set for very low latency (such as: lower than 5ms). For the 
reall-world day to day work with big Ardour-projects, I cannot find any 
difference regarding xruns.

> Being more on the recording engineer side of things and not a Linux expert
> (user yes, expert no) I really fret at the thought of patching and
> compiling my own kernel package.
> I would like to hear your opinions on what distro is solid for audio work
> and has a reliable rt kernel.
> Also I would appreciate if you could explain the degree of difficulty and
> learning curve of the specific distro.
> My system:
> Intel i7 950
> Gigabyte motherboard
> 6 Gb ram
> Rme HDSP 9652 audio interface
> Appreciate your answers.
> Moshe
> P.S. I tried to use Ubuntu on the same machine I use openSuse 11.2 on and
> got pretty bad results regarding latency and x runs on jack 2.

Ubuntu works OK for me here but is indeed not as solid and powerful as 
Suses desktop-kernel. At the other hand I tend to use it anyway. There 
are more xruns but not too many (about 2-3/h under serious load), it is 
quite stable and forgiving(not a single case of jackd crashed or frozen) 
and the best: it is the most comfortable distro I ever had. Listening to 
youtube-videos or using any sound-source imaginable while Ardour is up 
and running whithout even the need to think about how this happens is 
kind of nice methinks ;-)

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