Messages in this thread |  | | | Date | Sat, 29 Jul 2000 21:01:31 -0700 (PDT) | | From | Andre Hedrick <> | | Subject | Re: ORBS Elevator... |
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On Sat, 29 Jul 2000, Andrea Arcangeli wrote:
> On Sat, 29 Jul 2000, Andre Hedrick wrote: > > >This is the first case where the "elevator" an be used as a strong boost. > > I'm curious to see how much difference it will make. To try it out you > should tell us where are you going to store the geometry information. I > don't care of a real sane geometry API at the moment, just make an hack to > provide that info to the elevator layer (in a static variable as worse). > Then I or Jens can make a patch to make the elevator to use such > new information for the interesting HD instead of the blocknr.
| +------ LBA 0 top of platter. | +----- LBA End top of platter. |----------------------------------- | +--- axis of rotation.
We do a C or inverted Q position loop, real basic stuff for prediction by knowing the characteristic of the media in a documented way.
> I'm actually doing VM benchmarking, if you need that elevator change fast > you can ask Jens too (you can keep me in CC of course). > > Andrea >
Andre Hedrick The Linux ATA/IDE guy
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