Factoids

ncq:

  1. for x in /sys/block/sd?/device/queue_depth ; do echo -n $x:;cat $x; done
  2. disable: for x in /sys/block/sd?/device/queue_depth ; do echo 1 > $x; done
  3. enable: for x in /sys/block/sd?/device/queue_depth ; do echo 31 > $x; done