Malinux' notes
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Disable NCQ
Disabling NCQ (Native Command Queuing) can in some circumstances improve performance
# To check if ncq is already off, its' likely not if you haven't already turned it off
cat /sys/block/sdX/device/queue_depth
# it will return 32 if it's on
# To turn it off:
echo 1 > /sys/block/sdk/device/queue_depth