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====== TCP Tuning ====== By default, Centos used the following TCP parameters: <code> net.ipv4.tcp_syncookies = 1 net.core.rmem_max = 131071 net.core.wmem_max = 131071 net.ipv4.tcp_rmem = 4096 87380 4194304 net.ipv4.tcp_wmem = 4096 16384 4194304 net.core.netdev_max_backlog = 1000 </code>