Comment 35 for bug 1449005

I think you shouldn't worry too much an either disable NCQ or remove the discard option from fstab. I will not speculate on the performance impact of disabling NCQ. Please take your favorite I/O benchmark and evaluate the different options.

I saw patches that add an option to only disable queued TRIM and leave NCQ enabled for everything else. But they will only show up in Linux 4.1, as far as I know.