9 Dec
2005
9 Dec
'05
3:12 p.m.
On Fri, Dec 09, 2005 at 04:44:11PM +0100, Michael Bohle wrote:
I am looking for users and developers which deal with
audio RT kernel
items. I used RT-LSM till now to regulate the user audio rights.
http://www.opensuse.org/index.php/RT_Kernel_Instructions
It is all about that openSUSE contains an audio distribution.
www.opensuse.org/JackLab - www.jacklab.net
This requires a SUSE-kernel according to the standard, which is patched
for "rt full preemt". This Kernel will be available in our
apt4rpm-repository at gwdg.de.
Takashi Iwai and Matthias Nargorni has made clear to me, that RT-LSM is
obsolent and PAM should be used instead. In addition, PAM is already
available in the current SUSE Kernel.
Who has experiences with PAM for SCHED_FIFO priorities ?
Who could help to arrange dealing with PAM and RT for musicians?
In generally, who can help to tune up the suse standard kernel to audio
rt ?
Finaly there will be a very userfriendly audio distribution based on
openSUSE.
Regards,
Michael
If you are using a recent kernel (>=2.6.12) and a recent pam-package
(>=0.80) then, if I am right, everything sould already be working. You
would adjust the limits.conf to contain something like
@audio - rtprio 100
@audio - nice -10
@audio - memlock 4000000
Thus the group audio could run programs with realtime privileges.
Note, that I myself still use an older patched pam version (apparently
"rt_priority" changed to "rtprio") and therefore have not tested the
above suggestions.
If the suse-pam-package is too old, it would eventually be easier to
build a new one (>=0.80) than to patch the old.
Hope that help,
Burkhard