> Quoting Bryan Lawver <[EMAIL PROTECTED]>: > Subject: IPoIB forwarding > > I have a small test bed with 2 nodes with IB/OFED1.2/connected mode and a > third node which has IP only and is connected to one of the IB nodes. In > between are DDR IB switch and 10GE IP switch. The node with both IP and IB > interfaces is simply a IP router in this test setup. The IB only node has > a subnet route to router node and the IP only node has a subnet route to > the router node. > > When I launch an Iperf test from the IB (IPoIB) node to the IP node, I get > very good throughput with no tuning (7.5gbs). > > When I launch from IP to the IB node, I get virtually no thorughput > (2.5mbs). When I dropped the window size to 8k (iperf -w8k) the throughput > is 750mbs. > > Any suggestions, ideas?
Some troubleshooting tips: Are some packets lost on the router? Checking packet counters might give you a clue. Do you see some errors on one of the IB nodes? Set debug_level=1 module parameter for ib_ipoib, and check dmesg output while running the test. -- MST _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
