说明

BBRGoogle开源的TCP BBR拥塞控制算法,用于提升网络连接速度,提升空间巨大,优化效果非常明显;
BBR仅支持4.9以上内核Ubuntu 18.04/20.04 CentOS 8 Debian 9/10均为4.9以上内核无需更换内核可以直接开启BBR。

方法

1、修改系统变量

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

2、保存生效

sysctl -p

3、查看内核是否已开启BBR

sysctl net.ipv4.tcp_available_congestion_control

显示以下即已开启:

# sysctl net.ipv4.tcp_available_congestion_control
net.ipv4.tcp_congestion_control = bbr

4、查看BBR是否启动

lsmod | grep bbr

显示以下即启动成功:

# lsmod | grep bbr
tcp_bbr                20480  14
分类: 教程 标签: UbuntuDebianGoogle BBR

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