Linux內核參數調整（用於大併發的WEB服務器）
cat > /etc/sysctl.conf < EOF net.ipv4.tcp_syncookies = 1 fs.file-max = 999999 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_keepalive_time = 600 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_max_tw_buckets = 5000 net.ipv4.ip_local_port_range = 1024 61000 net.ipv4.tcp_rmem = 10240 87380 12582912 net.ipv4.tcp_wmem = 10240 87380 12582912 net.core.netdev_max_backlog = 8096 net.core.rmem_default = 6291456 net.core.wmem_default = 6291456 net.core.rmem_max = 12582912 net.core.wmem_max = 12582912 net.ipv4.tcp_max_syn_backlog = 1024 EOF