Re: [LAU] OS for realtime operation

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To: linux-audio-user <linux-audio-user@...>
Date: Friday, January 13, 2012 - 7:45 am

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2012/1/13 david

> On 01/12/2012 06:15 AM, tee wrote:

e
s

Just to spread some KISS :-)
Compiling a debian RT kernel is quite straightforward.

Download debian sources or vanilla ones from kernel.org
Patch according to your release (
http://www.kernel.org/pub/linux/kernel/projects/rt/ )

Run `make oldconfig` inside the sources dir, you will probably be asked
about configs in the newer kernel not found in .config-YOUR_RUNNING_KERNEL

Then follow the common workflow, run `make menuconfig`, at least change
only the PREEMPT opt and seti it to 'complete preemption'.

Create your linux-image debian package with make-kpkg (
http://www.debian.org/releases/stable/i386/ch08s06.html.en)

If your running kernel works this one will too 99.9%

my 0.02=80
regards
-r

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2012/1/13 david <gnome@hawaii.rr.com>
On 01/12/2012 06:15 AM, tee wrote:

Hello,

On 10/01/2012 13:44, Paul Davis wrote:

2) the PREEMPT_RT kernel is substantially "more realtime" than an=
y
version of windows or OS X that you could lay your hands on. its more
like an actual realtime OS than the kind of general purpose OS that
regular Linux, Windows and OS X represent, though without actually
being suitable (quite) for "hard RT" tasks.

if someone needs such a kernel for debian, they are available at
http://pengutronix.de/software/linux-rt/debian_en.html

I tried that once. Booting it just led to panics. I decided it didn't l=
ike my hardware for whatever reason.

I'm doing ok with the stock Debian Sid kernel, but I don't need lat=
ency as low as others might.Just to spread some KISS =
:-) Compiling a debian RT kernel is quite straightforward.
Download debian sources or vanilla ones from =
kernel.org
Patch according to your release ( http://www.kernel.org/pub/linux/ke=
rnel/projects/rt/
)
Run `make oldconfig` inside the sources dir, you will probably be asked=
about configs in the newer kernel not found in .config-YOUR_RUNNING_KERNEL=
Then follow the common workflow, run `make menuconfig`, at least ch=
ange only the PREEMPT opt and seti it to 'complete preemption'.
Create your linux-image debian package with make-kpkg (http://www.debian.or=
g/releases/stable/i386/ch08s06.html.en
)If your running kernel w=
orks this one will too 99.9%
my 0.02=80regards-r

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Messages in current thread:
[LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 2:24 pm)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Wed Jan 11, 2:43 pm)
Re: [LAU] OS for realtime operation, Josh Lawrence, (Thu Jan 12, 8:07 pm)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Fri Jan 13, 12:02 pm)
Re: [LAU] OS for realtime operation, david, (Wed Jan 11, 5:05 pm)
Re: [LAU] OS for realtime operation, Dave Phillips, (Wed Jan 11, 2:47 pm)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Thu Jan 12, 8:11 am)
Re: [LAU] OS for realtime operation, david, (Thu Jan 12, 8:25 am)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Thu Jan 12, 4:08 pm)
Re: [LAU] OS for realtime operation, david, (Thu Jan 12, 6:00 pm)
Re: [LAU] OS for realtime operation, michael noble, (Tue Jan 10, 12:47 am)
Re: [LAU] OS for realtime operation, Ronald Stewart, (Tue Jan 10, 1:05 am)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Mon Jan 9, 9:06 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 10:01 pm)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Tue Jan 10, 9:02 am)
Re: [LAU] OS for realtime operation, Paul Davis, (Tue Jan 10, 12:44 pm)
Re: [LAU] OS for realtime operation, tee, (Thu Jan 12, 4:15 pm)
Re: [LAU] OS for realtime operation, david, (Fri Jan 13, 4:59 am)
Re: [LAU] OS for realtime operation, Raffaele Morelli, (Fri Jan 13, 7:45 am)
Re: [LAU] OS for realtime operation, Nicola Pandini, (Sat Jan 14, 10:38 am)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Feb 20, 7:38 am)
Re: [LAU] OS for realtime operation, david, (Fri Jan 13, 8:43 am)
Re: [LAU] OS for realtime operation, fred, (Tue Jan 10, 7:17 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Wed Jan 11, 1:11 pm)
Re: [LAU] OS for realtime operation, Fons Adriaensen, (Wed Jan 11, 2:55 pm)
Re: [LAU] OS for realtime operation, Brett McCoy, (Wed Jan 11, 1:39 pm)
Re: [LAU] OS for realtime operation, Diego Simak, (Tue Jan 10, 12:07 am)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Tue Jan 10, 8:15 am)
Re: [LAU] OS for realtime operation, gene heskett, (Tue Jan 10, 2:43 pm)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Tue Jan 10, 3:13 pm)
Re: [LAU] OS for realtime operation, Hartmut Noack, (Mon Jan 9, 5:29 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 5:53 pm)
Re: [LAU] OS for realtime operation, Hartmut Noack, (Mon Jan 9, 9:05 pm)
Re: [LAU] OS for realtime operation, Raffaele Morelli, (Mon Jan 9, 3:05 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 3:23 pm)
Re: [LAU] OS for realtime operation, Raffaele Morelli, (Tue Jan 10, 7:02 am)
Re: [LAU] OS for realtime operation, Fons Adriaensen, (Mon Jan 9, 4:03 pm)
Re: [LAU] OS for realtime operation, Joe Hartley, (Mon Jan 9, 3:58 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 4:24 pm)