I have LS1046A-RDM evms to test 10G performance. The two devices are LS1046A-RDBs and run the same LSDK 19.09. The test environment were netperf for test tool, cat6A cable for connect two devs, and all of the setting on these devices were the same. The test results are 1. The average speed (Dev 1 as client and Dev 2 as Server) was 9.89Gps. The result wsa seem correct and closed to 10Gbps. Then, I changed the role, Dev 2 as client and Dev 1 as server and the speed was 7.61Gbps. Why are the result are different on the same device and LSDK? How can I fix these problem?