Re: [PATCH] speed up SATA

Bartlomiej Zolnierkiewicz
2004-03-28T15:28:12Z

On Sunday 28 of March 2004 09:23, Stefan Smietanowski wrote:
> Hi Jeff.
>
> >> What will happen when a PATA disk lies behind a Marvel(ous) bridge, as
> >> in most SATA disks today?
> >
> > Larger transfers work fine in PATA, too.
>
> Correct me if I'm wrong but wasn't the max number of sectors in a
> transfer limited to 255 instead of 256 because there were buggy
> drives out there before ? I seem to recall something like that but
> I could be wrong.

There was 255 sectors limit in IDE driver but it was based only on _one_
bugreport on _unreliable_ drive (256 sectors causes heavier I/O load).

AFAIR "the other OS" is using 256 sectors so this value is safe.

Regards,
Bartlomiej