Does using the "tune_pci=1" module option for ib_mthca bring the performance back up?
The reason the driver was changed to work this way is that presumably the BIOS is setting the PCI configuration as it does for a reason. So you might want investigate why the BIOS sets MaxReadReq down to 128 in the first place. (removing the save/restore across reset lets the HCA pick a new default for all the settings, but may cause problems by getting rid of BIOS settings, which we assume were done for a reason). However tune_pci=1 will make the driver override this setting if you really know what you're doing. - R. _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general