[openib-general] Drop in performance on Mellanox MT25204 single port DDR HCA

[Woodruff, Robert J]

Roland wrote,
>However tune_pci=1 will make the driver override this setting if you
>really know what you're doing.

> - R.

Peter, can you give this a try ? 
I think you set this in /etc/modprobe.conf
add the line,
options mthca tune_pci=1

Also, we need to understand why the BIOS in your platform is setting it 
to 128 rather than 512. Is this an oversight in the BIOS or are they
doing it for a reason.

woody