[openfabrics-ewg] Drop in performance on Mellanox MT25204 single port DDR HCA

[Roland Dreier]

 > Adding:
 > Options ib_mthca tune_pci=1 
 > 
 > Puts MaxReadReq = 4096.
 > 
 > I get 1250MB/s bandwidth.

Is that good?  I lost track from the beginning of the thread.

I would suggest working with your platform people to figure out why
the BIOS is setting the PCI Express parameters to non-optimal values.

 - R.