On Tue, 9 May 2000, Gordon Keith wrote:
> The problem I'm having is that the exabyte is much slower than the same
> drive on a linux desktop machine, and it's using in excess of 80% of the
> CPU, reading or writing. The performance is killing the system.
>From early experiences of SCSI tape drives on Amiga platform, I know that you
can use up lots of CPU to stream data. Some SCSI adaptors will work in
intelligent and polled-mode, maybe yours is defaulting to the latter when
talking to the tape drive, especially if it doesn't support disconnect/reselect
and so your CPU might be wasting time polling.
Trying to use reselect on tape drives can result in a world of pain. Propose
you get a CDRW instead :-)
Failing that, a second SCSI card?
Paul
--
P Mansfield, Senior SysAdmin PSINet UK Ltd, +44-1223-577611 fax:~577600
Civilisation: where they cut down the trees and name streets after them.
