江湖聊天室 Go 版

# /etc/sysctl.conf - 江湖聊天室优化配置

# === 文件描述符 ===
# WebSocket 连接需要大量文件描述符
fs.file-max = 1000000
fs.nr_open = 1000000

# === TCP 连接优化 ===
# 增大连接队列，防止高并发时丢弃连接
net.core.somaxconn = 65535
net.ipv4.tcp_max_syn_backlog = 65535

# 开启 TCP Fast Open（减少握手延迟）
net.ipv4.tcp_fastopen = 3

# TIME_WAIT 优化（快速回收）
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 15

# Keep-Alive（减少频繁建立连接）
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_intvl = 30
net.ipv4.tcp_keepalive_probes = 3

# === 缓冲区优化 ===
# 增大接收/发送缓冲区
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
net.core.netdev_max_backlog = 65535

# === 端口范围 ===
net.ipv4.ip_local_port_range = 1024 65535

# === 内存 ===
# 避免 swap（OOM 更好）
vm.swappiness = 10

# PowerShell（管理员权限运行）

# === 注册表优化（TCP/IP 协议栈）===

# 启用 TCP Fast Open（减少握手延迟）
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -Name "TcpFastOpen" -Value 3

# 增大动态端口范围
netsh int ipv4 set dynamicport tcp start=1024 num=64511

# 增大 TCP 连接积压队列
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -Name "TcpNumConnections" -Value 16777214
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -Name "TcpMaxDataRetransmissions" -Value 5

# TCP Keep-Alive 优化
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -Name "KeepAliveTime" -Value 300000
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -Name "KeepAliveInterval" -Value 1000

# === 文件描述符 ===
# 修改 IIS/系统最大句柄数
netsh int ipv4 set global maxuserport=65534

# === 进程优先级 ===
# 将 jh 进程设为高优先级（可选）
# Get-Process jh | ForEach-Object { $_.PriorityClass = "High" }