$cat /proc/sys/net/ipv4/tcp_retrans_collapse 1 $ Try to send full-sized packets during retransmit. This is enabled by default. TCP smart Framing, or TCP-SF for short, enables the Fast Retransmit/Recovery algorithms even when the congestion window is small. Without modifying the TCP congestion control based on the additive-increase/multiplicative-decrease paradigm, TCP-SF adopts a novel segmentation algorithm: while Classic TCP …