$cat /proc/sys/net/ipv4/tcp_moderate_rcvbuf 1 $ tcp_moderate_rcvbuf – BOOLEAN If set, TCP performs receive buffer auto-tuning, attempting to automatically size the buffer (no greater than tcp_rmem[2]) to match the size required by the path for full throughput. Enabled by default. source : Linux kernel Documentation kernel ( 2.6.32 ) trunk/coverage/common/ServerSpecs.pm – 1 identical 278: 247 tcp_max_syn_backlog 1024 …