Re: DMA Problem
as far as I know the '*' doesn't indicate the current state of the Drive
it only indicates the standard setting of the Firmware. But some how
this isn't used in my case. And I suppose that if it would be already
enabled a "hdparm /dev/hda" wouldn't report this:
<output>
/dev/hda:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 7752/240/63, sectors = 117210240, start = 0
</output>
and I think with enabled DMA I should be able to copy Files from that HD
faster than at 2MB/s (At least this is the case on my colleague's
notebook ;-) ).
greets
Marcel
On Mon, 2003-07-07 at 00:59, Matt Foster wrote:
> Quoting Marcel Gschwandl (tautau@gmx.ch):
> > the HD should be able to handle DMA because I was able to enable it with
> > hdparm and an kernel 2.4.20.
> >
> > output of "hdparm -I /dev/hda":
> >
> > <output>
> > /dev/hda:
> >
> > DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
> > Cycle time: min=120ns recommended=120ns
>
> Well, this bit seems to show the driver operating at udma5, which means
> DMA100. So that implies that its already enabled.
>
> I have no idea at all why you can't change it though.
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