On Fri, Jun 17, 2005 at 10:05:44AM -0600, Michael Loftis wrote:
> 
> 
> --On June 17, 2005 9:51:48 AM +0200 Paul Bijnens 
> <paul.bijnens AT xplanation DOT com> wrote:
> 
> >>    Estimated time to write 2 * 12288 Mbyte: 26880 sec = 7 h 28 min
> >>    wrote 298832 32Kb blocks in 76 files in 10632 seconds (short write)
> >>    wrote 310628 32Kb blocks in 158 files in 10840 seconds (short write)
> >
> >These two lines are actually a little strange.  I would have expected
> >that the second pass wrote a little bit less then the first pass (and
> >the difference is the space taken up by the additional filemarks).
> 
> Actually..... on my DAT drives I get the same thing.  Reliably.  Multiple 
> (new) tapes, multiple drives.  I think maybe a bug in the tapetype program 
> of some nature.  I've only ever run the tests without compression 
> personally.
> 

Have you tried amtapetype with compression intentionally left on?

It might confirm that the current results were obtained with
compression off.  I'm thinking about a possibility where the
drive dip switches are set to not allow switching it off.
My HP drive has such a switch.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
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