How to install BBR acceleration kernel in Linux Ubuntu system (CentOS comes with BBR)

Some of our friends felt that the speed was not fast enough after choosing the VPS host. The main reason for this lies in the selection of the computer room and lines. If we use the same computer room and configuration, can the speed be increased? Our usual method here is to install the Google BBR acceleration tool, and then increase the concurrent traffic of our server, which can increase the data transmission speed. Of course, this method will also cause the traffic to increase slightly. Its purpose is to reduce server line traffic congestion.

We can see that when reinstalling the system, if you choose the CENTOS image, you can see that it has the word BBR on the tail, which means it comes with accelerated BBR, and we do not need to install it. If we need to install an image like Debian or Ubuntu, we need to install BBR ourselves. He is not arrogant.

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

We log in to the Ubuntu or Debian of the Bricklayer VPS host, then enter the script and press Enter. The script will prompt that you need to restart the VPS. Enter y and press Enter to restart.

After the restart is complete, enter the VPS to verify whether the latest kernel is successfully installed and TCP BBR is enabled. Enter the following command:

uname -r

Check the kernel version. If it contains 4.13, it means OK.

sysctl net.ipv4.tcp_available_congestion_control

The return value is generally: net.ipv4.tcp_available_congestion_control = bbr cubic reno

sysctl net.ipv4.tcp_congestion_control

The return value is generally: net.ipv4.tcp_congestion_control = bbr

sysctl net.core.default_qdisc

The return value is generally: net.core.default_qdisc = fq

lsmod | grep bbr

If the tcp_bbr module is present in the return value, it means that bbr has been started.

That's it, is it still relatively simple?

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