鸡血配置

来源CCB

cp /etc/sysctl.conf /etc/sysctl.conf.bk
cat > /etc/sysctl.conf << EOF
fs.file-max = 6815744
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_adv_win_scale=1
net.ipv4.tcp_moderate_rcvbuf=1
net.core.rmem_max=33554432
net.core.wmem_max=33554432
net.ipv4.tcp_rmem=4096 87380 33554432
net.ipv4.tcp_wmem=4096 16384 33554432
net.ipv4.udp_rmem_min=8192
net.ipv4.udp_wmem_min=8192
net.ipv4.ip_forward=1
net.ipv4.conf.all.route_localnet=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
net.ipv6.conf.all.forwarding=1
net.ipv6.conf.default.forwarding=1
EOF
sysctl -p && sysctl --system

现代化

cp /etc/sysctl.d/99-custom-network.conf etc/sysctl.d/99-custom-network.conf.bk
cat > /etc/sysctl.d/99-custom-network.conf << EOF
fs.file-max = 6815744
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_adv_win_scale=1
net.ipv4.tcp_moderate_rcvbuf=1
net.core.rmem_max=33554432
net.core.wmem_max=33554432
net.ipv4.tcp_rmem=4096 87380 33554432
net.ipv4.tcp_wmem=4096 16384 33554432
net.ipv4.udp_rmem_min=8192
net.ipv4.udp_wmem_min=8192
net.ipv4.ip_forward=1
net.ipv4.conf.all.route_localnet=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
net.ipv6.conf.all.forwarding=1
net.ipv6.conf.default.forwarding=1
EOF
sysctl -p && sysctl --system

cat > /etc/sysctl.d/99-custom.conf << EOF
fs.file-max = 6815744
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_adv_win_scale=1
net.ipv4.tcp_moderate_rcvbuf=1
net.core.rmem_max=33554432
net.core.wmem_max=33554432
net.ipv4.tcp_rmem=4096 87380 33554432
net.ipv4.tcp_wmem=4096 16384 33554432
net.ipv4.udp_rmem_min=8192
net.ipv4.udp_wmem_min=8192
net.ipv4.ip_forward=1
net.ipv4.conf.all.route_localnet=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
net.ipv6.conf.all.forwarding=1
net.ipv6.conf.default.forwarding=1
EOF
sysctl --system

国外机器区 

对端远
cat > /etc/sysctl.conf << EOF
fs.file-max = 6815744
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_adv_win_scale=1
net.ipv4.tcp_moderate_rcvbuf=1
net.core.rmem_max=33554432
net.core.wmem_max=33554432
net.ipv4.tcp_rmem=4096 87380 33554432
net.ipv4.tcp_wmem=4096 16384 33554432
net.ipv4.udp_rmem_min=8192
net.ipv4.udp_wmem_min=8192
net.ipv4.ip_forward=1
net.ipv4.conf.all.route_localnet=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
net.ipv6.conf.all.forwarding=1
net.ipv6.conf.default.forwarding=1
EOF
sysctl -p && sysctl --system

对端很远
cat > /etc/sysctl.conf << EOF
fs.file-max = 6815744
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_adv_win_scale=1
net.ipv4.tcp_moderate_rcvbuf=1
net.core.rmem_max=67108864
net.core.wmem_max=67108864
net.ipv4.tcp_rmem=4096 87380 67108864
net.ipv4.tcp_wmem=4096 16384 67108864
net.ipv4.udp_rmem_min=8192
net.ipv4.udp_wmem_min=8192
net.ipv4.ip_forward=1
net.ipv4.conf.all.route_localnet=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
net.ipv6.conf.all.forwarding=1
net.ipv6.conf.default.forwarding=1
EOF
sysctl -p && sysctl --system

对端在火星
cat > /etc/sysctl.conf << EOF
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_moderate_rcvbuf=1
net.ipv4.ip_forward=1
net.ipv4.conf.all.route_localnet=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.core.default_qdisc = fq
net.core.rmem_max = 536870912
net.core.wmem_max = 536870912
net.core.somaxconn = 4096
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.tcp_congestion_control = bbr
net.ipv4.tcp_rmem = 16384 16777216 536870912
net.ipv4.tcp_wmem = 16384 16777216 536870912
net.ipv4.tcp_adv_win_scale = -2
net.ipv4.tcp_timestamps = 1
kernel.panic = -1
vm.swappiness = 0
net.ipv6.conf.all.forwarding=1
net.ipv6.conf.default.forwarding=1
EOF
sysctl -p && sysctl --system

ts=$(date +%F-%H%M%S)
sudo mkdir -p /root/sysctl-backup-$ts
sudo cp -a /etc/sysctl.d /root/sysctl-backup-$ts/
[ -f /etc/sysctl.conf ] && sudo cp -a /etc/sysctl.conf /root/sysctl-backup-$ts/

sudo find /etc/sysctl.d -maxdepth 1 -type f -name '*.conf' -delete
sudo tee /etc/sysctl.conf >/dev/null <<'EOF'
# intentionally left minimal
# active tuning is managed in /etc/sysctl.d/*.conf
EOF

sudo modprobe tcp_bbr 2>/dev/null || true
sudo tee /etc/sysctl.d/90-bbr-balanced.conf >/dev/null <<'EOF'
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr

net.ipv4.tcp_ecn = 2
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_mtu_probing = 1

net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 131072 16777216
net.ipv4.tcp_wmem = 4096 16384 16777216
EOF

sudo tee /etc/sysctl.d/91-forwarding.conf >/dev/null <<'EOF'
net.ipv4.ip_forward = 1
net.ipv4.conf.all.forwarding = 1
net.ipv4.conf.default.forwarding = 1
net.ipv6.conf.all.forwarding = 1
net.ipv6.conf.default.forwarding = 1
EOF

sudo sysctl --system
sudo sysctl \
  net.ipv4.tcp_congestion_control \
  net.core.default_qdisc \
  net.ipv4.ip_forward \
  net.ipv4.conf.all.forwarding \
  net.ipv6.conf.all.forwarding \
  net.core.rmem_max \
  net.core.wmem_max \
  net.ipv4.tcp_rmem \
  net.ipv4.tcp_wmem

美国

net.core.default_qdisc = fq             
net.ipv4.tcp_congestion_control = bbr   
                                        
net.ipv4.tcp_ecn = 2                    
net.ipv4.tcp_sack = 1                   
net.ipv4.tcp_window_scaling = 1         
net.ipv4.tcp_moderate_rcvbuf = 1        
net.ipv4.tcp_mtu_probing = 1            
                                        
net.core.rmem_max = 33554432            
net.core.wmem_max = 33554432            
net.ipv4.tcp_rmem = 4096 131072 33554432
net.ipv4.tcp_wmem = 4096 16384 33554432