Improving the performance of multipath TCP over heterogeneous paths using slow path adaptation
Sabur Baidya, Ravi Prakash · 2014
Multipath TCP (MPTCP) is an extension of TCP, developed by Internet Engineering Task Force (IETF) to support communication between source and destination through multiple flows under a single connection session. We have conducted several experiments with real hardware on flows with extreme variation in path quality and found that unless receive buffer size is increased to a much higher value, the overall throughput decreases below the level of single-path TCP throughput. We propose a Slow Path Adaptation (SPA) technique to overcome this issue without affecting other performance parameters. The implementation is done on Linux kernel and experimental results are presented.