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SubjectStrange disk-write speeds

Weird. I have two identical SCSI drives. They both synchronize
at 40 Mb/s on my Buslogic controller. They are the two ...
Vendor: SEAGATE Model: ST318233LWV Rev: 0002
... drives shown below.

They both have ext2 file-systems occupying a single partition.
The time to write a file that fills up the file-system on the
"Id: 01" drive is about 1/2 an hour and the time to write a
file that fills up the file-system on "Id: 02" is about 1/2 day!

This is with the file created with "O_SYNC". If the file is
not created with "O_SYNC", there is no apparent difference in
write speed.

If I swap the jumpers on the two drives to isolate the drives
from the problem, the slooooo drive is the logical "ID: 02",
always... not the physical one!

Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: SEAGATE Model: ST32171W Rev: 0484
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: SEAGATE Model: ST318233LWV Rev: 0002
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: SEAGATE Model: ST318233LWV Rev: 0002
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 04 Lun: 00
Vendor: YAMAHA Model: CRW6416S Rev: 1.0b
Type: CD-ROM ANSI SCSI revision: 02


`uname -a`
Linux chaos 2.4.1 #39 SMP Wed Jan 2 14:35:06 EST 2002 i686

Does anybody have a clue?

Cheers,
Dick Johnson

Penguin : Linux version 2.4.1 on an i686 machine (797.90 BogoMips).

I was going to compile a list of innovations that could be
attributed to Microsoft. Once I realized that Ctrl-Alt-Del
was handled in the BIOS, I found that there aren't any.


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