Re: Lower HD transfer rate with NCQ enabled?

[Paa Paa]

> > Q: What conclusion can I make on "hdparm -t" results or can I make any 
> > conclusions? Do I really have lower performance with NCQ or not? If I do, 
> > is this because of my HD or because of kernel?
>
> What IO scheduler are you using? If AS or CFQ, could you try with deadline?

I was using CFQ. I now tried with Deadline and that doesn't seem to degrade 
the performance at all! With Deadline I got 60MB/s both with and without 
NCQ. This was with "hdparm -t".

So what does this tell us?

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