IDE DMA on SCO 5.0.6?
Bus Driver
and while the setup and install went fine....how can I check/change DMA on
the IDE drives?
I am presuming that DMA is available for IDE....but not sure if it is ON and
working...
TIA!
JB
Tony Lawrence
Do you perhaps mean UDMA? See
http://pcunix.com/SCOFAQ/scotec2.html#udma
--
Tony Lawrence
SCO/Linux Support Tips, How-To's, Tests and more: http://pcunix.com
John Gray
The simplest way is just an easy speed test.
timex dd if=/dev/rhd00 if=/dev/null bs=1024k count=100
This will read 100 meg from the begining of the drive.
usually if it is above 4 Meg/sec it's using UDMA but
I have seen 7MB/sec on one brand drive using PIO.
Anywhere from 10 MB/sec to 36 MB/sec depending on the
drive and mother board you are testing.
-john
Richard Howlett
>
> Bus Driver wrote:
> >
> > I recently installed SCO 5.0.6 using all IDE hardware (I dont have any SCSI)
> > and while the setup and install went fine....how can I check/change DMA on
> > the IDE drives?
> >
> > I am presuming that DMA is available for IDE....but not sure if it is ON and
> > working...
> >
> > TIA!
> >
> > JB
>
> The simplest way is just an easy speed test.
>
> timex dd if=/dev/rhd00 if=/dev/null bs=1024k count=100
Don't mean to be picky but just incase anyone runs this and finds it doesn't
work, try changing "if=/dev/null" to "of=/dev/null" ;-)
--
Richard Howlett
mailto:ric...@howie.org.uk
John Gray
Oops, good catch.
-john
Nick Cole
"John Gray" <jo...@InterSAN.net> wrote in message
news:3BC3573F...@InterSAN.net...
> Bus Driver wrote:
> >
> > I recently installed SCO 5.0.6 using all IDE hardware (I dont have any
SCSI)
> > and while the setup and install went fine....how can I check/change DMA
on
> > the IDE drives?
> >
> > I am presuming that DMA is available for IDE....but not sure if it is ON
and
> > working...
> >
> > TIA!
> >
> > JB
>
Boot: defbootstr wd.debug=udma