original post by Sumidero, cut and pasted from here:
After some exchange of posts in this thread:
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:
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:
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.