Debian12 编译 Google TCP BBR v3

首先安装编译所需的依赖包和软件包:

apt -y update
apt -y install build-essential libncurses-dev libssl-dev libelf-dev bison bc flex rsync debhelper dwarves git

获取源码:

git clone -b v3 https://github.com/google/bbr.git
cd bbr/

复制系统默认的内核配置文件:

cp /boot/config-$(uname -r) .config

执行如下命令保留旧.config文件中的所有选项,并将新选项设置为推荐(即默认)值:

make olddefconfig

打开配置菜单:

make menuconfig

依次进入 Networking support-> Networking options-> TCP: advanced congestion control->,把BBR TCP选项设置为编译成模块:

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为节约编译时间和减少硬盘占用,建议关闭DEBUG功能,依次进入Kernel hacking->Compile-time checks and compiler options->Debug information (Disable debug information)->,按下图所示设置为Disable debug information:

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编译并创建deb软件包:

make bindeb-pkg -j$(nproc)

编译完成后在上级目录安装新的内核并重启:

cd ..
apt install ./linux-image-6.4.0+_6.4.0-g6e321d1c986a-1_amd64.deb
apt install ./linux-headers-6.4.0+_6.4.0-g6e321d1c986a-1_amd64.deb
systemctl reboot

查看tcp_bbr模块信息:

modinfo tcp_bbr

可以看到版本是3:

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启用BBRv3:

echo "net.core.default_qdisc = fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control = bbr" >> /etc/sysctl.conf
sysctl -p

执行下面的命令检查BBR模块是否启动成功:

lsmod

如有类似回显说明正常:

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