Re: Silicon Image 3112A SATA trouble
From: Bartlomiej Zolnierkiewicz (B.Zolnierkiewicz_at_elka.pw.edu.pl)
Date: 11/30/03
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To: Jens Axboe <axboe@suse.de> Date: Sun, 30 Nov 2003 18:13:48 +0100
On Sunday 30 of November 2003 18:08, Jens Axboe wrote:
> On Sun, Nov 30 2003, Bartlomiej Zolnierkiewicz wrote:
> > > Yes, it would be better to have a per-drive (or hwif) extra limiting
> > > factor if it is needed. For this case it really isn't, so probably not
> > > the best idea :)
> > >
> > > > Tangent: My non-pessimistic fix will involve submitting a single
> > > > sector DMA r/w taskfile manually, then proceeding with the remaining
> > > > sectors in another r/w taskfile. This doubles the interrupts on the
> > > > affected chipset/drive combos, but still allows large requests. I'm
> > > > not terribly
> > >
> > > Or split the request 50/50.
> >
> > We can't - hardware will lock up.
>
> I know the problem. Then don't split 50/50 to the word, my point was to
> split it closer to 50/50 than 1 sector + the rest.
Oh, I understand now and agree.
--bart
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