Cloud networks are lossy and low latency, reducing TCP_RTO_MIN and TCP_DELACK_MIN looks like a good idea, but it looks as if this needs a linux kernel recompile. Anyone else looked at this? Here is a relevant paper �Safe and Effective Fine-grained TCP Retransmissions for Datacenter Communication� http://www.cs.cmu.edu/~vrv/papers/sigcomm147-vasudevan.pdf