Re: Silicon Image 3112A SATA trouble

Jens Axboe
2003-11-30T17:15:13Z

On Sun, Nov 30 2003, Bartlomiej Zolnierkiewicz wrote:
>
> 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.

Cool. BTW to make myself 100% clear, I don't mean "split" as in split
the request, merely the amount issued to the hardware. Request splitting
has such an ugly ring to it :)

--
Jens Axboe