are you saying that: 15:44:55.147148 sched_setscheduler(21264, SCHED_FIFO, { 2 }) = 0 <0.000027> is the last thing in the trace before: 15:45:34.548964 select(40, [3 4 5 7 39], [], [], {0, 496177} ?
IOW, is it this particular call (the first one, of course) that locks the kernel? That would pinpoint it quite well! I shall try it myself. -- BUG() report in getnstimeofday: soft lockup https://launchpad.net/bugs/53216 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs