Re: [PATCH] PAGE_SIZE IO for RAW (RAW VARY)

Alan Cox
2002-01-10T00:12:09Z

> I tested with 2 large competing databases, both of them seem to benifit
> significantly from this patch. I tested with 4 different Fiber & SCSI
> adaptors, they all seem to work fine. (only on i386).

Great.

> But unfortunately, if the hardware have special alignment restrictions
> (as you mentioned), this patch does not work. I don't know if it makes
> sense to make this configurable and expect customer/user to enable this
> feature if they know about their hardware/driver alignment restrictions.

The only one I know about is the 3ware, but I don't know how many I don't
know about (so to speak). For the kind of win you report, it looks well
worth exploring the compatibility issues and fixing them.