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Bbr is a black technology from Google community, and you can focus on the continuous development of tcp congestion technology on github.

What's the principle of this technique. I also said not clear, see the description more.

The original tcp traffic transmission hasn't been adapted to the current internet, and we put tcp traffic as a on the road, and tcp
In the original tcp traffic transmission, an intersection road, many traffic traffic, but no traffic lights and traffic traffic, resulting in the left squeeze.
And bbr and sharp speed control technology, is the traffic lights + traffic traffic, they're at the intersection of, to assign the traffic flow, then maximize.

this script is already running on digitalocean 's centos 7.

The following is a specific way to use the method,

1. Log on with the root user and enter the following code:

wget -N --no-check-certificate https://github.com/teddysun/across/raw/master/bbr.sh && chmod +x bbr.sh && bash bbr.sh

After the script is running, your system will prompt you to enter ( n/y ) to reboot, and the value of is.

In fact, there's no error, bbr is already set up, but we still have to check whether bbr is enabled. , then enter the following code to check if bbr is enabled.

uname -r#查看内核版本,含有 4.9.0 就表示 OK 了# ------------sysctl net.ipv4.tcp_available_congestion_control# 返回值一般为:# net.ipv4.tcp_available_congestion_control = bbr cubic reno# ------------sysctl net.ipv4.tcp_congestion_control# 返回值一般为:# net.ipv4.tcp_congestion_control = bbr# ------------sysctl net.core.default_qdisc# 返回值一般为:# net.core.default_qdisc = fq# ------------lsmod | grep bbr#!!!返回值有 tcp_bbr 模块即说明bbr已启动!!!



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