Re: [PATCH] speed up SATA

Jeff Garzik
2004-03-28T17:54:38Z

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