Hey guys,<br>Have a look at this:<br>bowman@melinda ~ $ uname -a<br>Linux melinda 2.6.24_rc8-100-rt #1 SMP PREEMPT RT Sun Jan 20 18:23:34 EET 2008 i686 mobile AMD Athlon(tm) XP-M 2200+ GNU/Linux<br><br>I'm really happy now. I did it.<br>
Thanks to all.<br><br><br><br><div class="gmail_quote">On Tue, Mar 18, 2008 at 9:49 PM, Mark Knecht <<a href="mailto:markknecht@gmail.com">markknecht@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
There is really no reason that I know of that you cannot build this<br>
kernel yourself. It's not horribly difficult once you've done it a few<br>
times. It can be quite daunting when you're up to bat for the first<br>
time though. the trick is understanding what driver modules you are<br>
using and making sure all of those are included in the configuration<br>
of your new kernel. Once you get past that step it's just a matter of<br>
adding a new option in the grub config file and trying it out.<br>
<br>
>From the RTWiki these are the commands to download and patch a kernel:<br>
<br>
<br>
# wget <a href="ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.23.1.tar.bz2" target="_blank">ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.23.1.tar.bz2</a><br>
# wget <a href="http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.23.1-rt11.bz2" target="_blank">http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.23.1-rt11.bz2</a><br>
# tar xfj linux-2.6.23.1.tar.bz2<br>
# cd linux-2.6.23.1<br>
# bzcat2 ../patch-2.6.23.1-rt11.bz2 | patch -p1<br>
<br>
The above is for 2.6.23. If you were going to do it you might as well<br>
go for 2.6.24.<br>
<br>
Changing the kernel itself should not cause any changes in the<br>
stability of your applications. They really exist at a higher level<br>
and just talk to the kernel underneath it. If a new minor revision<br>
kernel upgrade breaks an application I think it would generally be<br>
considered a regression in the kernel and would get fixed. I have<br>
kernels ranging back to 2.6.14. they all work.<br>
<br>
Hope this helps,<br>
<font color="#888888">Mark<br>
</font><div><div></div><div class="Wj3C7c"><br>
On Tue, Mar 18, 2008 at 12:41 PM, Arda Eden <<a href="mailto:ardaeden@gmail.com">ardaeden@gmail.com</a>> wrote:<br>
> I'm a PARDUS (a Turkish GNU/Linux distro) user so that the latest kernel<br>
> provided by my distro developers is 2.6.18.8-86. I can't know why they don't<br>
> complile a new one but i think that it's about the stability of most<br>
> applications provided by thet distro.<br>
><br>
> Which distro of Linux is most suitable for most linux audio applications ?<br>
><br>
><br>
><br>
> On Tue, Mar 18, 2008 at 9:36 PM, Mark Knecht <<a href="mailto:markknecht@gmail.com">markknecht@gmail.com</a>> wrote:<br>
><br>
> > That kernel is getting pretty old. I'm running 2.6.24-rt1 here. you<br>
> > might want to check out the RT-Wiki or some of the sites for using RT<br>
> > kernels with audio apps.<br>
> ><br>
> ><br>
> > <a href="http://rt.wiki.kernel.org/index.php/Main_Page" target="_blank">http://rt.wiki.kernel.org/index.php/Main_Page</a><br>
> ><br>
> > The above link gives instructions for patching a kernel to get to an RT<br>
> kernel.<br>
> ><br>
> > Hope this helps,<br>
> > Mark<br>
> ><br>
> ><br>
> ><br>
> ><br>
> > On Tue, Mar 18, 2008 at 12:02 PM, Arda Eden <<a href="mailto:ardaeden@gmail.com">ardaeden@gmail.com</a>> wrote:<br>
> > > Hmm,<br>
> > > So this is all about my kernel:<br>
> > > Linux melinda 2.6.18.8-86 #2 SMP Mon Feb 11 00:50:59 EET 2008 i686<br>
> mobile<br>
> > > AMD Athlon(tm) XP-M 2200+ GNU/Linux<br>
> > ><br>
> > > Is it possible to patch it in order to make it a RT kernel ?<br>
> > ><br>
> > ><br>
> > > On Tue, Mar 18, 2008 at 8:59 PM, Mark Knecht <<a href="mailto:markknecht@gmail.com">markknecht@gmail.com</a>><br>
> wrote:<br>
> > > ><br>
> > > > On Tue, Mar 18, 2008 at 11:41 AM, Arda Eden <<a href="mailto:ardaeden@gmail.com">ardaeden@gmail.com</a>><br>
> wrote:<br>
> > > > > So what does a realtime kernel change ? Makes my latency 1 ms ?<br>
> > > > ><br>
> > > > ><br>
> > > > ><br>
> > > > ><br>
> > > > > On Tue, Mar 18, 2008 at 8:38 PM, Arnold Krille<br>
> <<a href="mailto:arnold@arnoldarts.de">arnold@arnoldarts.de</a>><br>
> > > wrote:<br>
> > > > ><br>
> > > > > ><br>
> > > > > ><br>
> > > > > ><br>
> > > > > > Am Dienstag, 18. März 2008 schrieb Mark Knecht:<br>
> > > > > ><br>
> > > > > > > On Tue, Mar 18, 2008 at 11:25 AM, Arda Eden <<a href="mailto:ardaeden@gmail.com">ardaeden@gmail.com</a>><br>
> > > wrote:<br>
> > > > > > > > So is it really necessary to have a realtime kernel in order<br>
> to<br>
> > > use<br>
> > > > > linux<br>
> > > > > > > > audio applications without any latencies or xruns ?<br>
> > > > > > > It is not possible to use ANY kernel with NO latencies. EVERY<br>
> kernel<br>
> > > > > > > has latencies. The question is how low do you want the latencies<br>
> to<br>
> > > > > > > be? If you can exist with 50mS or higher you might get away with<br>
> a<br>
> > > > > > > standard kernel. If you want to run with 1.2mS latency then you<br>
> will<br>
> > > > > > > absolutely have to have a real-time enabled kernel.<br>
> > > > > ><br>
> > > > > > Still it has to be noted that you can achieve 5ms latency without<br>
> a<br>
> > > > > > RT-kernel... Even with an el-cheapo builtin soundcard...<br>
> > > > > ><br>
> > > > > > Arnold<br>
> > > ><br>
> > > > Absolutely. The most recent kernels are often quite good. However I<br>
> > > > would say that the difference between a standard kernel running 5mS<br>
> > > > and a RT kernel running 5mS is that the RT kernel is far more likely<br>
> > > > to meet the 5mS requirement under heavy system loads while the<br>
> > > > standard kernel may, at times, give a bit too much time to non-rt<br>
> > > > threads and not get back to your audio thread as fast as someone might<br>
> > > > want.<br>
> > > ><br>
> > > > If you want the highest reliability means of meeting your RT<br>
> > > > requirements all the time then use the RT kernel. If you are just<br>
> > > > doing home recording and can accept an occasional xrun (i.e. - a<br>
> > > > glitch in the recorded data) then stick with the standard kernel for<br>
> > > > as long as it works for you.<br>
> > > ><br>
> > > > Just my view,<br>
> > > > Mark<br>
> > > ><br>
> > ><br>
> > ><br>
> > ><br>
> > > --<br>
> > > Arda EDEN<br>
> > > Cumhuriyet University<br>
> > > Faculty of Fine Arts<br>
> > > Department of Music Technology<br>
> > > Sivas/TURKEY<br>
> ><br>
><br>
><br>
><br>
> --<br>
><br>
> Arda EDEN<br>
> Cumhuriyet University<br>
> Faculty of Fine Arts<br>
> Department of Music Technology<br>
> Sivas/TURKEY<br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Arda EDEN<br>Cumhuriyet University<br>Faculty of Fine Arts<br>Department of Music Technology<br>Sivas/TURKEY