203 lines
7.1 KiB
Bash
203 lines
7.1 KiB
Bash
#!/bin/bash
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# VPS 网络极限优化脚本 - 自动检测配置，发挥最大速度
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# https://github.com/xmg0828888/tcp-bbr
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RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[0;33m'; CYAN='\033[0;36m'; NC='\033[0m'
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[ "$(id -u)" != "0" ] && echo -e "${RED}请使用 root 运行${NC}" && exit 1
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CORES=$(nproc)
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MEM_MB=$(free -m | awk '/Mem:/{print $2}')
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MEM_BYTES=$((MEM_MB * 1024 * 1024))
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IFACE=$(ip route | awk '/default/{print $5}' | head -1)
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show_info() {
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echo -e "${CYAN}╔══════════════════════════════════╗${NC}"
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echo -e "${CYAN}║ VPS 网络极限优化脚本 v1.0 ║${NC}"
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echo -e "${CYAN}╚══════════════════════════════════╝${NC}"
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echo -e "CPU: ${YELLOW}${CORES} 核${NC} 内存: ${YELLOW}${MEM_MB}MB${NC} 内核: ${YELLOW}$(uname -r)${NC}"
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echo -e "网卡: ${YELLOW}${IFACE}${NC}"
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local algo=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
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local qdisc=$(sysctl -n net.core.default_qdisc 2>/dev/null)
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echo -e "拥塞算法: ${YELLOW}${algo}${NC} 队列: ${YELLOW}${qdisc}${NC}"
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if [ "$algo" = "bbr" ]; then
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echo -e "BBR: ${GREEN}✓ 已开启${NC}"
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else
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echo -e "BBR: ${RED}✗ 未开启${NC}"
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fi
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echo ""
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}
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# 根据内存自动计算缓冲区大小
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calc_buffers() {
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if [ $MEM_MB -le 512 ]; then
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RMEM_MAX=8388608; WMEM_MAX=8388608; NETDEV_BUDGET=300
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TCP_MEM="65536 131072 262144"; TCP_RMEM="4096 87380 4194304"; TCP_WMEM="4096 65536 4194304"
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BACKLOG=1000; SOMAXCONN=1024; CONNTRACK=16384
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elif [ $MEM_MB -le 2048 ]; then
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RMEM_MAX=16777216; WMEM_MAX=16777216; NETDEV_BUDGET=600
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TCP_MEM="131072 262144 524288"; TCP_RMEM="4096 87380 8388608"; TCP_WMEM="4096 65536 8388608"
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BACKLOG=2000; SOMAXCONN=2048; CONNTRACK=65536
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elif [ $MEM_MB -le 8192 ]; then
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RMEM_MAX=33554432; WMEM_MAX=33554432; NETDEV_BUDGET=1200
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TCP_MEM="262144 524288 1048576"; TCP_RMEM="4096 87380 16777216"; TCP_WMEM="4096 65536 16777216"
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BACKLOG=5000; SOMAXCONN=4096; CONNTRACK=131072
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else
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RMEM_MAX=67108864; WMEM_MAX=67108864; NETDEV_BUDGET=2400
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TCP_MEM="524288 1048576 2097152"; TCP_RMEM="4096 87380 33554432"; TCP_WMEM="4096 65536 33554432"
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BACKLOG=10000; SOMAXCONN=8192; CONNTRACK=262144
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fi
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FILE_MAX=$((MEM_MB * 256))
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[ $FILE_MAX -lt 65535 ] && FILE_MAX=65535
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}
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do_optimize() {
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calc_buffers
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echo -e "${GREEN}正在优化... (${MEM_MB}MB 内存方案)${NC}"
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local CONF="/etc/sysctl.d/99-network-optimize.conf"
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cat > "$CONF" << EOF
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# === BBR 拥塞控制 ===
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net.core.default_qdisc = fq
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net.ipv4.tcp_congestion_control = bbr
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# === 缓冲区 (基于 ${MEM_MB}MB 内存) ===
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net.core.rmem_max = ${RMEM_MAX}
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net.core.wmem_max = ${WMEM_MAX}
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net.core.rmem_default = 262144
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net.core.wmem_default = 262144
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net.ipv4.tcp_rmem = ${TCP_RMEM}
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net.ipv4.tcp_wmem = ${TCP_WMEM}
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net.ipv4.tcp_mem = ${TCP_MEM}
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net.ipv4.udp_mem = ${TCP_MEM}
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# === 连接队列 ===
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net.core.netdev_max_backlog = ${BACKLOG}
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net.core.somaxconn = ${SOMAXCONN}
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net.ipv4.tcp_max_syn_backlog = ${SOMAXCONN}
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# === TCP 快速回收 ===
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net.ipv4.tcp_tw_reuse = 1
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net.ipv4.tcp_fin_timeout = 15
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net.ipv4.tcp_keepalive_time = 300
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net.ipv4.tcp_keepalive_intvl = 30
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net.ipv4.tcp_keepalive_probes = 5
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net.ipv4.tcp_max_tw_buckets = 65535
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net.ipv4.tcp_max_orphans = 32768
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# === TCP 性能 ===
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net.ipv4.tcp_fastopen = 3
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net.ipv4.tcp_mtu_probing = 1
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net.ipv4.tcp_slow_start_after_idle = 0
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net.ipv4.tcp_no_metrics_save = 1
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net.ipv4.tcp_window_scaling = 1
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net.ipv4.tcp_sack = 1
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net.ipv4.tcp_timestamps = 1
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net.ipv4.tcp_ecn = 0
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net.ipv4.tcp_syncookies = 1
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net.ipv4.tcp_adv_win_scale = 2
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net.core.netdev_budget = ${NETDEV_BUDGET}
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net.core.netdev_budget_usecs = 8000
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# === 文件描述符 ===
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fs.file-max = ${FILE_MAX}
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fs.nr_open = ${FILE_MAX}
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# === 连接跟踪 ===
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net.netfilter.nf_conntrack_max = ${CONNTRACK}
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# === 其他 ===
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net.ipv4.ip_local_port_range = 1024 65535
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net.ipv4.ip_forward = 1
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net.ipv6.conf.all.forwarding = 1
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EOF
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sysctl --system >/dev/null 2>&1
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# 设置文件描述符限制
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if ! grep -q "# network-optimize" /etc/security/limits.conf 2>/dev/null; then
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cat >> /etc/security/limits.conf << EOF
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# network-optimize
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* soft nofile ${FILE_MAX}
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* hard nofile ${FILE_MAX}
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root soft nofile ${FILE_MAX}
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root hard nofile ${FILE_MAX}
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EOF
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fi
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# 网卡队列优化
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if command -v ethtool &>/dev/null && [ -n "$IFACE" ]; then
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ethtool -G "$IFACE" rx 4096 tx 4096 2>/dev/null
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ethtool -K "$IFACE" tso on gso on gro on 2>/dev/null
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fi
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echo -e "${GREEN}✓ 优化完成！${NC}"
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echo ""
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show_result
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}
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show_result() {
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echo -e "${CYAN}=== 优化结果 ===${NC}"
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echo ""
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echo -e "${GREEN}[ BBR 加速 ]${NC}"
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echo -e " 拥塞算法: $(sysctl -n net.ipv4.tcp_congestion_control)"
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echo -e " 队列调度: $(sysctl -n net.core.default_qdisc)"
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echo ""
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echo -e "${GREEN}[ TCP 调优 ]${NC}"
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echo -e " FastOpen: $(sysctl -n net.ipv4.tcp_fastopen)"
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echo -e " MTU探测: $(sysctl -n net.ipv4.tcp_mtu_probing)"
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echo -e " 窗口缩放: $(sysctl -n net.ipv4.tcp_window_scaling)"
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echo -e " SACK: $(sysctl -n net.ipv4.tcp_sack)"
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echo -e " Timestamps: $(sysctl -n net.ipv4.tcp_timestamps)"
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echo -e " tw_reuse: $(sysctl -n net.ipv4.tcp_tw_reuse)"
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echo -e " fin_timeout: $(sysctl -n net.ipv4.tcp_fin_timeout)s"
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echo -e " keepalive: $(sysctl -n net.ipv4.tcp_keepalive_time)s"
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echo -e " 慢启动: $(sysctl -n net.ipv4.tcp_slow_start_after_idle) (0=关闭)"
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echo ""
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echo -e "${GREEN}[ 缓冲区 ]${NC}"
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echo -e " rmem_max: $(( $(sysctl -n net.core.rmem_max) /1024/1024 ))MB"
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echo -e " wmem_max: $(( $(sysctl -n net.core.wmem_max) /1024/1024 ))MB"
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echo -e " tcp_rmem: $(sysctl -n net.ipv4.tcp_rmem)"
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echo -e " tcp_wmem: $(sysctl -n net.ipv4.tcp_wmem)"
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echo ""
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echo -e "${GREEN}[ 连接 ]${NC}"
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echo -e " backlog: $(sysctl -n net.core.netdev_max_backlog)"
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echo -e " somaxconn: $(sysctl -n net.core.somaxconn)"
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echo -e " 端口范围: $(sysctl -n net.ipv4.ip_local_port_range)"
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echo -e " 文件描述符: $(sysctl -n fs.file-max)"
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echo ""
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echo -e "${YELLOW}✓ 重启后永久生效，无需额外操作${NC}"
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}
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do_restore() {
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echo -e "${YELLOW}正在恢复默认...${NC}"
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rm -f /etc/sysctl.d/99-network-optimize.conf
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sysctl --system >/dev/null 2>&1
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echo -e "${GREEN}✓ 已恢复默认配置${NC}"
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}
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show_menu() {
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clear
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show_info
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echo "1. 一键优化 (BBR + 内核参数 + 缓冲区)"
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echo "2. 查看当前状态"
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echo "3. 恢复默认配置"
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echo "0. 退出"
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echo ""
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read -p "请选择 [0-3]: " choice
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case "$choice" in
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1) do_optimize ;;
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2) show_result ;;
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3) do_restore ;;
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0) exit 0 ;;
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*) echo -e "${RED}无效选择${NC}" ;;
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esac
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echo ""; read -p "按回车继续..." && show_menu
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}
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case "${1:-}" in
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restore|disable) do_restore ;;
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status) show_info; show_result ;;
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menu) show_menu ;;
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*) show_info; do_optimize ;;
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esac
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