Re: Silicon Image 3112A SATA trouble

From: Jens Axboe (axboe_at_suse.de)
Date: 11/30/03

  • Next message: Jens Axboe: "Re: Silicon Image 3112A SATA trouble" 
    Date:	Sun, 30 Nov 2003 18:08:06 +0100
To: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>

    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. 

    -- 
Jens Axboe
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