Re: [PATCH] speed up SATA

[Jeff Garzik]

Jamie Lokier wrote:
> This is what I mean: turn off write cacheing, and performance on PATA
> drops because of the serialisation and lost inter-command time.
>
> With TCQ-on-write, you can turn off write cacheing and in theory
> performance doesn't have to drop, is that right?

hmmm, that's a good point.  I honestly don't know.  Something to be 
tested, I suppose...

My premature guess would be that you would need a queue depth larger 
than 2 or 4 before performance starts to not-suck.

	Jeff



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