[linux-audio-user] kernel-22.214.171.124-lsm only slightly better...
pdman at aproximation.org
Thu Nov 17 23:18:27 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.
Odd. When I run jack from the command line I get none of these error
messages, but then again I am not using any verbosity related flags either.
> Make sure you are really in group 500 (run "groups" and "grep
> 500 /etc/group").
'id -G' returns 500, and 'cat /etc/group | grep pdman' returns
I seem to recal last time I tried to do the LSM thing I had to patch
PAM: could this have anything to do with it? I have selinux disabled also.
> Check "dmesg | grep -i realtime" to make sure that
> the realtime module is being loaded with the correct options.
Realtime LSM initialized (all groups, mlock=1)
> Also try
> unloading realtime LSM and forcibly reloading it from the command line:
> # rmmod realtime
> # modprobe realtime gid=500
done. Now 'dmesg | grep -i realtime' says "Realtime LSM initialized
(group 500, mlock=1)"
No better performance though.
Thanks for the help!
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