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
