Re: [LAU] OS for realtime operation

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To: Nicola Pandini <nicola.pandini@...>
Cc: <linux-audio-user@...>
Date: Monday, February 20, 2012 - 7:38 am

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Hi all!

Just wanted to let you know what we decided.

After much thought put into this we decided to take the plunge into the
Arch Linux world.
We just liked the idea of tailoring our own system that answers to all our
needs, and felt that with Arch this would be the most simple approach.

I wanted to thank you all for your inputs and very interesting posts!

Warm regards,
Moshe

On Sat, Jan 14, 2012 at 12:37 PM, Nicola Pandini
wrote:

> **

L
0

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Hi all!Just wanted to let you know wha=
t we decided.After much thought put into this we =
decided to take the plunge into the Arch Linux world.We just lik=
ed the idea of tailoring our own system that answers to all our needs, and =
felt that with Arch this would be the most simple approach.
I wanted to thank you all for your inputs and very inte=
resting posts!Warm regards,Moshe=A0On Sat, Jan 14, 2012 at 12:37 PM, Ni=
cola Pandini <nicola.pandini@gmail.com> wrote:

=20
=20
=20
=20

Il 13/01/2012 08:44, Raffaele Morelli ha scritto:

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 any
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.h=
tml

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

I'm doing ok with the stock Debian Sid kernel, but I don'=
t
need latency 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/pu=
b/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

Hi, I'm using Debian Wheezy.
I'm not comfortable in building kernel on my own, so I try Liquorix=
,
that hasn't the RT patch, but is built with the kernel system timer
set to 1000 hz (instead of the standard 250 hz), and that seems to
improve the midi timing. (I read this somewhere in Rosengarden site,
can anyone confirm this?)
I work mostly with midi and samplers, so with rtirq and Liquorix it
seems enough for me.
Are there better kernels for audio/midi operations in Wheezy?
--=20
Nicola

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Linux-audio-user mailing list
Linux-audio-user@l=
ists.linuxaudio.org

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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)