Messages in this thread | | | Date | Wed, 12 Mar 2003 17:06:59 +0100 | From | Jens Axboe <> | Subject | Re: bio too big device |
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On Wed, Mar 12 2003, Alan Cox wrote: > On Wed, 2003-03-12 at 15:11, Jens Axboe wrote: > > Then go with 128. I'd like to stress again that _if_ you get worse > > performance it's not due to the request being a bit smaller, but indeed > > because 248 can cause badly aligned requests. > > > > > got the IDE layer using 256 block writes even if we have to limit it > > > to more modern drives by some handwaving (8Gb+ say) > > > > Does Windows use 256 sector requests or not? If not, then I'd sure don't > > want to do it in Linux, the handwaving doesn't mean anything then. > > I am told it does, Andre can you confirm this either way. If not then its > time to ask vendors to confirm and any vendor who says "our drives are fine" > we put on the ok list.
Well I can hook an analyzer to such a bastard and verify it for sure, that's one way :)
If Windows does, then we have nothing to worry about.
-- Jens Axboe
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