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FreeBSD内核开启BBR
source link: https://garywu520.github.io/2022/07/25/FreeBSD%E5%86%85%E6%A0%B8%E5%BC%80%E5%90%AFBBR/
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FreeBSD内核开启BBR
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FreeBSD内核开启BBR
1. 下载源码
umount /usr/src
rm -rf /usr/src
cd /root/
wget http://ftp.freebsd.org/pub/FreeBSD/releases/amd64/12.3-RELEASE/src.txz
tar xzpf src.txz
cp -R usr/src /usr/
cd /usr/src/sys/amd64/conf
cp GENERIC BBR
2.调整配置
cat BBR
修改 ident 的值为 BBR ,并在 ident行添加以下内容:
ident BBR
options TCPHPTS
options RATELIMIT
makeoptions WITH_EXTRA_TCP_STACKS=1
3. 新建src.conf
cat /etc/src.conf
KERNCONF=BBR
MALLOC_PRODUCTION=yes
4. 编译BBR内核
/usr/sbin/config BBR
cd ../compile/BBR
make cleandepend && make depend
#N设置为CPU核心数+1
make -jN
make install
#重启系统
如果编译出错,通常原因是配置时模块缺失。实在不能确定是否需要的模块请不要禁用。
uname -a
如果显示BBR,说明BBR内核编译并安装成功
#移除老内核
rm -rf /boot/kernel.old
5. 配置BBR
#bbr写入到/etc/rc.conf
sysrc kld_list+="tcp_rack tcp_bbr"
#sysctl启动时加载BBR模块
echo 'net.inet.tcp.functions_default=bbr' >> /etc/sysctl.conf
#校验bbr加载
sysctl net.inet.tcp.functions_default
#如果返回结果是net.inet.tcp.functions_default: bbr,则说明启用成功
#为所有 TCP 会话启用 BBR 日志记录
echo 'net.inet.tcp.bb.log_auto_mode=4' >>/etc/sysctl.con
echo 'net.inet.tcp.bb.log_auto_all=1' >>/etc/sysctl.con
echo 'net.inet.tcp.bb.log_auto_ratio=1' >>/etc/sysctl.con
Netflix GitHub项目: tcplog_dumper
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