http://puredata.hurleur.com/sujet-5605-compile-install-real-time-kernel-debian

Hello everybody:
After some exchange of posts in this thread:

http://puredata.hurleur.com/sujet-5578-old-toughbook-useful-live-events

I told @katjav and @PonZo that soon I was going to post a log of a Real-time Kernel compilation and installation for Debian based machines, so that Pd would run fast and smooth in any machine, even a small netbook. I only found the log of the compilation of a desktop machine, but the process is the same, adjusting the choices to the equipment features. I hope this encourages you to compile your own Real-time kernel.
You can download the pdf file from here:

http://dl.dropbox.com/u/6086343/HowToCompileARealTimeKernelForDebian.pdf

Extra data:
You can find out the chipset name of your audio card using this command:

# cat /proc/asound/cards

There are some extra tweaks needed to develop real-time performance:

Install jack with its graphic front end:

# aptitude install qjackctl

Once installed, it prompts us to configure automatically this file:
/etc/security/limits.d/audio.conf

We agree and then we tweak this other file opening it with any text editor (always in root mode).

# gedit /etc/security/limits.conf

Then we add these lines at the bottom of the limits.conf file to assign high and real-time priorities to the @audio group:

@audio - rtprio 99
@audio - memlock unlimited
@audio - nice -10

Don't forget to add your user to the @audio group:

# adduser <userName> audio

I hope it works for you too. Best regards to all of you.

Sumidero