Fernando Pablo Lopez-Lezcano <nando@xxxxxxxxxxxxxxxxxx>: > Caveats: FC1 qt + dri + 2.6.4 + SCHED_FIFO = hanging machine, as > reported a while back. Yuck. Turning off dri solves this one at the cost > of no acceleration. > > With all the above I'm able to run Jack with SCHED_FIFO and no xruns in > a short test run at 64x2 (with a background task tar'ing /usr to a > file). But with DRI off, Qjackctl and some real Jack applications I do > get xruns even at 128x2, I guess my cpu is maxing out... I'm confused. I probably have misunderstood something, but: First you say, that you get a "hanging machine" with SCEHD_FIFO enabled applications, but later you say that you can run Jack with SCHED_FIFO with all the different configurations/kernels you mention. What do you mean with a hanging machine? Do you get 'random' lockups, or does your system hang always when some specific software is run with SCHED_FIFO? Do you get lockups with this kernel & setup (option d in your email)? Could you give a list of specific patches (and urls) you have applied to 2.6.4-1.286.2.ll (option d), or maybe a link to the source package? Sampo
