Hi,

A disk performance question :-)
I have two UW scsi disks (IBM [id 6] and Quantum [id0]) on the same UW
SCSI-3 Tekram controller [id 7].
Nothing else is attached to the controller.
Controller is set to 40MB/sec transfer rate in its scsi config utility.
It detects disks correctly and sets the transfer rate to 40MB/sec (I can
see that when the system boots and scsi info is displayed).
Quantum disk is capable of 40MB/sec and IBM is capable of 80MB/sec.
Kernel is configured with the highest possible number (40MHz) for
transfers.
I was copying a large file (50Meg) from quantum to ibm disk using mc.
mc has a nice feature that shows you the transfer rate in MB.
That indicated the transfers of ~3MB/sec...
I have to note that I was going from a native linux partition to a fat32.
But anyway, why is it so slow?
thanks,


-alexm


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