197 lines
5.1 KiB
Bash
197 lines
5.1 KiB
Bash
#!/bin/bash
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# BBR Blast Smooth v2 - 自动识别系统/内存智能调优版
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# 支持 Debian 11/12/13, Ubuntu 20.04/22.04/24.04
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# 根据内存大小自动调整缓冲区参数 🚀
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set -e
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# 颜色输出
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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echo -e "${BLUE}========================================${NC}"
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echo -e "${BLUE} BBR Blast Smooth v2 智能调优版${NC}"
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echo -e "${BLUE}========================================${NC}"
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echo ""
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# 检测系统
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detect_os() {
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if [ -f /etc/os-release ]; then
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. /etc/os-release
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OS=$ID
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VER=$VERSION_ID
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else
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echo -e "${RED}❌ 无法识别系统${NC}"
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exit 1
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fi
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case "$OS" in
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debian)
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if [[ "$VER" =~ ^(11|12|13)$ ]]; then
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echo -e "${GREEN}✓ 检测到 Debian $VER${NC}"
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else
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echo -e "${RED}❌ 仅支持 Debian 11/12/13${NC}"
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exit 1
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fi
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;;
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ubuntu)
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if [[ "$VER" =~ ^(20.04|22.04|24.04)$ ]]; then
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echo -e "${GREEN}✓ 检测到 Ubuntu $VER${NC}"
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else
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echo -e "${RED}❌ 仅支持 Ubuntu 20.04/22.04/24.04${NC}"
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exit 1
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fi
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;;
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*)
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echo -e "${RED}❌ 不支持的系统: $OS${NC}"
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exit 1
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;;
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esac
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}
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# 检测内存并设置参数
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detect_memory() {
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# 获取总内存 (MB)
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TOTAL_MEM=$(free -m | awk '/^Mem:/{print $2}')
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echo -e "${GREEN}✓ 检测到内存: ${TOTAL_MEM}MB${NC}"
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# 缓冲区 = 内存的 1/8，最小 8MB，最大 256MB
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BUF_MB=$(( TOTAL_MEM / 8 ))
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[ "$BUF_MB" -lt 8 ] && BUF_MB=8
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[ "$BUF_MB" -gt 256 ] && BUF_MB=256
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BUF_BYTES=$(( BUF_MB * 1024 * 1024 ))
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if [ "$TOTAL_MEM" -lt 512 ]; then
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PROFILE="micro"
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echo -e "${YELLOW}→ 使用 Micro 配置 (极小内存优化)${NC}"
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elif [ "$TOTAL_MEM" -lt 1024 ]; then
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PROFILE="small"
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echo -e "${YELLOW}→ 使用 Small 配置 (小内存优化)${NC}"
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elif [ "$TOTAL_MEM" -lt 2048 ]; then
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PROFILE="medium"
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echo -e "${YELLOW}→ 使用 Medium 配置 (中等内存)${NC}"
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elif [ "$TOTAL_MEM" -lt 4096 ]; then
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PROFILE="large"
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echo -e "${YELLOW}→ 使用 Large 配置 (大内存)${NC}"
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else
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PROFILE="xlarge"
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echo -e "${YELLOW}→ 使用 XLarge 配置 (超大内存)${NC}"
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fi
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RMEM_MAX=$BUF_BYTES
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WMEM_MAX=$BUF_BYTES
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TCP_RMEM="4096 87380 $BUF_BYTES"
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TCP_WMEM="4096 65536 $BUF_BYTES"
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echo -e "${YELLOW}→ 缓冲区: ${BUF_MB}MB${NC}"
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}
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# 启用 BBR
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enable_bbr() {
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echo ""
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echo -e "${BLUE}==> 启用 BBR${NC}"
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modprobe tcp_bbr 2>/dev/null || true
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echo "tcp_bbr" > /etc/modules-load.d/bbr.conf
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echo -e "${GREEN}✓ BBR 模块已加载${NC}"
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}
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# 备份原配置
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backup_config() {
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if [ -f /etc/sysctl.conf ]; then
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cp /etc/sysctl.conf /etc/sysctl.conf.bak.$(date +%Y%m%d%H%M%S)
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echo -e "${GREEN}✓ 已备份原配置${NC}"
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fi
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}
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# 写入优化参数
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apply_config() {
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echo ""
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echo -e "${BLUE}==> 写入优化参数 (Profile: $PROFILE)${NC}"
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# 移除旧的 BBR 配置
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sed -i '/# === BBR Blast Smooth/,/# === END BBR/d' /etc/sysctl.conf 2>/dev/null || true
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cat >> /etc/sysctl.conf <<SYSCTL
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# === BBR Blast Smooth v2 (Profile: $PROFILE) ===
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# 系统: $OS $VER | 内存: ${TOTAL_MEM}MB | 缓冲: ${BUF_MB}MB
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# 生成时间: $(date '+%Y-%m-%d %H:%M:%S')
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# BBR 拥塞控制
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net.core.default_qdisc=fq
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net.ipv4.tcp_congestion_control=bbr
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# 缓冲区 (内存/8 自动计算)
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net.core.rmem_max=$RMEM_MAX
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net.core.wmem_max=$WMEM_MAX
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net.ipv4.tcp_rmem=$TCP_RMEM
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net.ipv4.tcp_wmem=$TCP_WMEM
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# 短连接 & 延迟优化
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net.ipv4.tcp_fin_timeout=8
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net.ipv4.tcp_tw_reuse=1
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net.ipv4.tcp_window_scaling=1
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net.ipv4.tcp_timestamps=1
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net.ipv4.tcp_sack=1
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# 避免保存历史 RTT，保持突发灵活
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net.ipv4.tcp_no_metrics_save=1
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# === END BBR ===
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SYSCTL
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echo -e "${GREEN}✓ 配置已写入${NC}"
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}
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# 应用配置
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reload_config() {
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echo ""
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echo -e "${BLUE}==> 应用配置${NC}"
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sysctl -p >/dev/null 2>&1
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echo -e "${GREEN}✓ 配置已生效${NC}"
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}
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# 验证结果
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verify() {
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echo ""
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echo -e "${BLUE}==> 验证配置${NC}"
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CC=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
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QDISC=$(sysctl -n net.core.default_qdisc 2>/dev/null)
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if [ "$CC" = "bbr" ] && [ "$QDISC" = "fq" ]; then
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echo -e "${GREEN}✓ 拥塞控制: $CC${NC}"
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echo -e "${GREEN}✓ 队列算法: $QDISC${NC}"
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else
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echo -e "${RED}⚠ 配置可能未完全生效，建议重启${NC}"
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fi
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}
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# 显示摘要
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summary() {
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echo ""
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echo -e "${BLUE}========================================${NC}"
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echo -e "${GREEN}✅ BBR Blast Smooth v2 配置完成！${NC}"
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echo -e "${BLUE}========================================${NC}"
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echo -e "系统: $OS $VER"
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echo -e "内存: ${TOTAL_MEM}MB"
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echo -e "配置: $PROFILE"
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echo -e "缓冲: $(($RMEM_MAX/1024/1024))MB"
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echo ""
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}
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# 主流程
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main() {
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detect_os
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detect_memory
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enable_bbr
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backup_config
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apply_config
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reload_config
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verify
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summary
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}
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main
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