[NQ自测]家人云一周年纪念版-法兰克福

# --- 1. 虚拟内存 (VM) 优化 ---
# 1GB 内存较小，设为 10 或 20 均可，保留少量 swap 以防 OOM 崩溃
vm.swappiness = 20
vm.vfs_cache_pressure = 100
# 减小数量，防止内核为映射表耗费过多内存
vm.max_map_count = 65536
vm.overcommit_memory = 1

# --- 2. 文件系统优化 ---
# 1GB 内存不建议开启百万级句柄，10万足够
fs.file-max = 102400
fs.nr_open = 102400

# --- 3. 核心网络栈基础优化 ---
net.core.netdev_max_backlog = 2048
# 监听队列调小，防止并发洪峰直接耗尽内存
net.core.somaxconn = 2048
# 缓冲区最大值降至 8MB-16MB (16777216)，兼顾 BBR 性能与安全
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.optmem_max = 32768

# --- 4. IPv4 网络协议栈专项优化 ---
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr

# TCP 读写缓冲区 (min, default, max)
# 最大值限制在 16MB 左右，防止极端情况下 OOM
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216

# 降低 TIME-WAIT 桶大小，节省内存空间
net.ipv4.tcp_max_tw_buckets = 32768
# 降低半连接队列
net.ipv4.tcp_max_syn_backlog = 2048

# 其他 BBR 调优保持不变（不直接消耗大量内存）
net.ipv4.tcp_slow_start_after_idle = 0
net.ipv4.tcp_notsent_lowat = 16384