[linux-audio-user] kernel-2.6.14.2-lsm only slightly better...

Lee Revell rlrevell at joe-job.com
Thu Nov 17 21:34:31 EST 2005


On Thu, 2005-11-17 at 18:03 -0800, thewade wrote:
> The best I can do with jack without out more then the 13 initial XRUNS
> is:
> /usr/local/bin/jackd -R -P70 -u -dalsa -dhw:0 -r48000 -p256 -n2 -m -H
> -M
> ...though qjackctl says
> cannot use real-time scheduling (FIFO at priority 69) [for thread 
> -1211757648, from thread -1211757648] (1: Operation not permitted)
> cannot lock down memory for RT thread (Cannot allocate memory)
> the qjackctl statistics window says realtime is enabled.
> 

Your realtime LSM is somehow not working right, as JACK is unable to run
in realtime mode.

Make sure you are really in group 500 (run "groups" and "grep
500 /etc/group").  Check "dmesg | grep -i realtime" to make sure that
the realtime module is being loaded with the correct options.  Also try
unloading realtime LSM and forcibly reloading it from the command line:

# rmmod realtime
# modprobe realtime gid=500

Lee



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