http://bugzilla.kernel.org/show_bug.cgi?id=13909 --- Comment #19 from Roland Kletzing <devzero@xxxxxx> 2009-08-10 18:21:23 --- maybe running "strace md5sum bigfile 2>&1 | tail -n 25" "strace dd if=bigfile of=/dev/null 2>&1 |tail -n 25" gives some additional information where it gets stuck. sorry if this information already hides in the stacktrace - i`m not familar with reading those. also contents from /proc/sched_debug and checking /proc/$PID_OF_STUCK_TASK/stat for increasing values (utime/stime/eip) would perhaps give additional information. to see if this is scheduling/smp issue, you could either boot with 'maxcpus=1' into single cpu mode or start your tasks with cpu affinity "taskset -c 0 cmdname" or "taskset -c 1 cmdname". does that make any difference ? -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
