On Wed, Sep 04, 2002 at 10:58:47AM -0400, Thor Lancelot Simon wrote:
> It's trivial to see that this helps RAIDframe; the FS layer will only cluster
> to MAXPHYS, which RAIDframe has to split up again, so that it is, in fact,
> impossible to get a MAXPHYS-sized transfer out of RAIDframe.  It takes only
> minutes to set up a RAIDframe configuration such that you can demonstrate for
> yourself that the large number of transfers this generates is a serious issue
> for disk performance.

I think the right fix for this is to make MAXPHYS variable per driver.
As I said, SCSI drivers could then use a larger MAXPHYS and this could
help a lot with modern hardware.

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
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