80MB/s not 160MB/s
Justin T. Gibbs
gibbs at scsiguy.com
Tue Dec 4 08:01:10 PST 2001
>Below are some logs messages from the default kernel and my fresh
>kernel. Basically I'm not getting 160MB/s after I perform a compile of
>the kernel. The default RedHat 7.2 install does get 160MB/s. The
>default install uses initrd to load the AIC7XXX driver. I compile it
>right into the kernel, not as a module.
>How can I get the speeds backup to 160MB/s
You will need a patch. The root cause is that your IBM drives
are claiming to be SCSI 2 when they should be reporting SPI-3
conformance. The bits in the inquiry data that tell us that a
device can support double transition clocking (requied for 80MHz
sync rates) were not defined until SPI-3 so the driver doesn't
bother to look at them.
This will be fixed in the next drop of the driver. I have another
bug I'm trying to characterize and fix before I do the next release.
It shouldn't be more than another week.
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