Messages in this thread | | | Date | Mon, 27 May 2002 16:09:36 +0200 (CEST) | From | me@vger ... | Subject | Re: /dev/hd[ijkl] only using udma (not udma 100) |
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On Mon, 27 May 2002, Simen Timian Thoresen wrote:
> > I booted with: > > linux ide0=autotune ide1=autotune ide2=autotune ide3=autotune > > > > and now all drives are running just (U)DMA and speeds on the 3 first > > droped to 15m/s. > > > > The settings file you gave here, is there some possibility to configure > > settings there? I see things like current_speed and init_speed that would > > be nice to try and tweak. > > > I believe that file is read only, and that the changes are made with hdparm or > autotune. > > I have not tried to change anything yet (I first noticed this yesterday while > replacing disks in a raid), but I'll have a go with hdparm when I get home and > see what I can shake up. > > I believe you can set trasfer-mode directly using hdparm -x<mode>, but I > don't see why the kernel should not set this by default. >
Well, as i read the ide .c i see that preconfigureation (if you can call it that, more like what drives/interfaces do we assume is there), i only see that for ide0-3. Now ide0-1 is onboard and ide1-2 is the first ide card but nothing is made with ide4-5 which is the second ide card and i think that the problem.
It would realy be nice to find a way to force transfer mode on boot up but i cant see to find any way.
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