[LAU] Realtime Kernel

[Arda Eden]

I'm a PARDUS (a Turkish GNU/Linux distro) user so that the latest kernel
provided by my distro developers is 2.6.18.8-86. I can't know why they don't
complile a new one but i think that it's about the stability of most
applications provided by thet distro.

Which distro of Linux is most suitable for most linux audio applications ?

On Tue, Mar 18, 2008 at 9:36 PM, Mark Knecht <markknecht at gmail.com> wrote:

> That kernel is getting pretty old. I'm running 2.6.24-rt1 here. you
> might want to check out the RT-Wiki or some of the sites for using RT
> kernels with audio apps.
>
> http://rt.wiki.kernel.org/index.php/Main_Page
>
> The above link gives instructions for patching a kernel to get to an RT
> kernel.
>
> Hope this helps,
> Mark
>
> On Tue, Mar 18, 2008 at 12:02 PM, Arda Eden <ardaeden at gmail.com> wrote:
> > Hmm,
> > So this is all about my kernel:
> > Linux melinda 2.6.18.8-86 #2 SMP Mon Feb 11 00:50:59 EET 2008 i686
> mobile
> > AMD Athlon(tm) XP-M 2200+ GNU/Linux
> >
> > Is it possible to patch it in order to make it a RT kernel ?
> >
> >
> > On Tue, Mar 18, 2008 at 8:59 PM, Mark Knecht <markknecht at gmail.com>
> wrote:
> > >
> > > On Tue, Mar 18, 2008 at 11:41 AM, Arda Eden <ardaeden at gmail.com>
> wrote:
> > > > So what does a realtime kernel change ? Makes my latency 1 ms ?
> > > >
> > > >
> > > >
> > > >
> > > > On Tue, Mar 18, 2008 at 8:38 PM, Arnold Krille <arnold at arnoldarts.de
> >
> > wrote:
> > > >
> > > > >
> > > > >
> > > > >
> > > > > Am Dienstag, 18. März 2008 schrieb Mark Knecht:
> > > > >
> > > > > > On Tue, Mar 18, 2008 at 11:25 AM, Arda Eden <ardaeden at gmail.com>
> > wrote:
> > > > > > > So is it really necessary to have a realtime kernel in order
> to
> > use
> > > > linux
> > > > > > > audio applications without any latencies or xruns ?
> > > > > > It is not possible to use ANY kernel with NO latencies. EVERY
> kernel
> > > > > > has latencies. The question is how low do you want the latencies
> to
> > > > > > be? If you can exist with 50mS or higher you might get away with
> a
> > > > > > standard kernel. If you want to run with 1.2mS latency then you
> will
> > > > > > absolutely have to have a real-time enabled kernel.
> > > > >
> > > > > Still it has to be noted that you can achieve 5ms latency without
> a
> > > > > RT-kernel... Even with an el-cheapo builtin soundcard...
> > > > >
> > > > > Arnold
> > >
> > > Absolutely. The most recent kernels are often quite good. However I
> > > would say that the difference between a standard kernel running 5mS
> > > and a RT kernel running 5mS is that the RT kernel is far more likely
> > > to meet the 5mS requirement under heavy system loads while the
> > > standard kernel may, at times, give a bit too much time to non-rt
> > > threads and not get back to your audio thread as fast as someone might
> > > want.
> > >
> > > If you want the highest reliability means of meeting your RT
> > > requirements all the time then use the RT kernel. If you are just
> > > doing home recording and can accept an occasional xrun (i.e. - a
> > > glitch in the recorded data) then stick with the standard kernel for
> > > as long as it works for you.
> > >
> > > Just my view,
> > > Mark
> > >
> >
> >
> >
> > --
> > Arda EDEN
> > Cumhuriyet University
> > Faculty of Fine Arts
> > Department of Music Technology
> > Sivas/TURKEY
>



-- 
Arda EDEN
Cumhuriyet University
Faculty of Fine Arts
Department of Music Technology
Sivas/TURKEY
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