>> What about the IPoIB patches (e.g. use Interrupt moderation)> I have no idea what patch that might be. We've had the modify_cq call in ipoib for years now, with moderation parameters set through ethtool.http://www.spinics.net/lists/linux-rdma/msg09142.html andhttp://www.spinics.net/lists/linux-rdma/msg09143.htmlTziporet