* Pavel Vasilyev | 2015-07-22 23:05:24 [+0300]: >[ 0.388079] io scheduler cfq registered (default) ># cat /sys/block/sda/queue/scheduler >none Does the same thing happen with plain v3.18.17? Because if it does then it is not a -RT problem. ># uname -a >Linux localhost 3.18.17-rt14 #1 SMP PREEMPT RT Wed Jul 22 18:49:51 >MSK 2015 x86_64 GNU/Linux Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html