id summary reporter owner description status priority milestone component version resolution keywords cc dependencies 197 ExoSM paths TCP traffic inconsistencies lnevers@bbn.com somebody "Finding TCP traffic results are inconsistent for site to site connection set up by the ExoSM stitching between the GPO and Houston rack. The following TCP performance was found from GPO EG to Houston EG (repeatable): {{{ 1 TCP client = 20.4 Mbits/sec 5 TCP clients = 3.02 Mbits/sec 10 TCP clients = 2.98 Mbits/sec }}} Why does throughput drop from 20 Mbits/sec as more client are added? These are the results for the same requests in the opposite direction from Houston EG to GPO EG: {{{ 1 TCP client = 7.95 Mbits/sec 5 TCP clients = 8.81 Mbits/sec 10 TCP clients = 8.66 Mbits/sec }}} Why such low throughput for an ExoSM VLAN? The results above are inconsistent compared to other sites. {{{ From GPO EG to UFL EG: 1 TCP client = 27.5 Mbits/sec 5 TCP clients = 139 Mbits/sec 10 TCP clients = 278 Mbits/sec From UFL EG to GPO EG: 1 TCP client = 27.5 Mbits/sec 5 TCP clients = 129 Mbits/sec 10 TCP clients = 201 Mbits/sec }}} " closed major Experiment SPIRAL6 fixed confirmation tests