修改优化参数，5.x内核使用cake队列

tcp.sh

@@ -108,8 +108,13 @@ installlot(){
 #启用BBR
 startbbr(){
 	remove_all
-	echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
-	echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
+	if [[ `echo ${kernel_version} | awk -F'.' '{print $1}'` >= "5" ]]; then
+		echo "net.core.default_qdisc=cake" >> /etc/sysctl.conf
+		echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
+	else
+		echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
+		echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
+	fi
 	sysctl -p
 	echo -e "${Info}BBR启动成功！"
 }
@@ -269,35 +274,37 @@ remove_all(){
 optimizing_system(){
 	sed -i '/fs.file-max/d' /etc/sysctl.conf
 	sed -i '/fs.inotify.max_user_instances/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_syncookies/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_fin_timeout/d' /etc/sysctl.conf
 	sed -i '/net.ipv4.tcp_tw_reuse/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_max_syn_backlog/d' /etc/sysctl.conf
 	sed -i '/net.ipv4.ip_local_port_range/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_max_tw_buckets/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.route.gc_timeout/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_synack_retries/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_syn_retries/d' /etc/sysctl.conf
+	sed -i '/net.ipv4.tcp_rmem/d' /etc/sysctl.conf
+	sed -i '/net.ipv4.tcp_wmem/d' /etc/sysctl.conf
 	sed -i '/net.core.somaxconn/d' /etc/sysctl.conf
+	sed -i '/net.core.rmem_max/d' /etc/sysctl.conf
+	sed -i '/net.core.wmem_max/d' /etc/sysctl.conf
+	sed -i '/net.core.wmem_default/d' /etc/sysctl.conf
+	sed -i '/net.ipv4.tcp_max_tw_buckets/d' /etc/sysctl.conf
+	sed -i '/net.ipv4.tcp_max_syn_backlog/d' /etc/sysctl.conf
 	sed -i '/net.core.netdev_max_backlog/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_timestamps/d' /etc/sysctl.conf
-	sed -i '/net.ipv4.tcp_max_orphans/d' /etc/sysctl.conf
+	sed -i '/net.netfilter.nf_conntrack_max/d' /etc/sysctl.conf
+	sed -i '/net.ipv4.netfilter.ip_conntrack_tcp_timeout_established/d' /etc/sysctl.conf
+	sed -i '/net.ipv4.tcp_slow_start_after_idle/d' /etc/sysctl.conf
 	sed -i '/net.ipv4.ip_forward/d' /etc/sysctl.conf
 	echo "fs.file-max = 1000000
 fs.inotify.max_user_instances = 8192
-net.ipv4.tcp_syncookies = 1
-net.ipv4.tcp_fin_timeout = 30
 net.ipv4.tcp_tw_reuse = 1
-net.ipv4.ip_local_port_range = 1024 65000
-net.ipv4.tcp_max_syn_backlog = 16384
-net.ipv4.tcp_max_tw_buckets = 6000
-net.ipv4.route.gc_timeout = 100
-net.ipv4.tcp_syn_retries = 1
-net.ipv4.tcp_synack_retries = 1
-net.core.somaxconn = 32768
-net.core.netdev_max_backlog = 32768
-net.ipv4.tcp_timestamps = 0
-net.ipv4.tcp_max_orphans = 32768
+net.ipv4.ip_local_port_range = 1024 65535
+net.ipv4.tcp_rmem = 16384 262144 8388608
+net.ipv4.tcp_wmem = 32768 524288 16777216
+net.core.somaxconn = 8192
+net.core.rmem_max = 16777216
+net.core.wmem_max = 16777216
+net.core.wmem_default = 2097152
+net.ipv4.tcp_max_tw_buckets = 5000
+net.ipv4.tcp_max_syn_backlog = 10240
+net.core.netdev_max_backlog = 10240
+net.netfilter.nf_conntrack_max = 1000000
+net.ipv4.netfilter.ip_conntrack_tcp_timeout_established = 7200
+net.ipv4.tcp_slow_start_after_idle = 0
 # forward ipv4
 net.ipv4.ip_forward = 1">>/etc/sysctl.conf
 	sysctl -p