Vps开启bbr加速

One-Step

Quick installation(懒人一键安装)

PS: Requirments

OS: CentOS 6+，Debian 7+，Ubuntu 12+
Virtual platform: Except OpenVZ, such as KVM, Xen, VMware etc.
Memory: ≥128M

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

Check-BBR

# check linux kernel version
[root@vps-d ~]# uname -a
Linux vps-d 4.10.4-1.el7.elrepo.x86_64 #1 SMP Sat Mar 18 12:50:10 EDT 2017 x86_64 x86_64 x86_64 GNU/Linux

# check network info
[root@vps-d ~]# sysctl net.ipv4.tcp_available_congestion_control
net.ipv4.tcp_available_congestion_control = bbr cubic reno
[root@vps-d ~]# sysctl net.ipv4.tcp_congestion_control
net.ipv4.tcp_congestion_control = bbr
[root@vps-d ~]# sysctl net.core.default_qdisc
net.core.default_qdisc = fq

# check bbr module is load
[root@vps-d ~]# lsmod | grep bbr
tcp_bbr                16384  24

PS: If the kernel version less than 4.12, you need upgrade.

Upgrade-Kernel##

Sample with CentOS 7:

# add repo and install
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
yum --enablerepo=elrepo-kernel install kernel-ml kernel-ml-devel -y

# check kernel install
rpm -qa | grep kernel

# update grub system
egrep ^menuentry /etc/grub2.cfg | cut -f 2 -d \'
# default 0
# Run by the first core(表示第一个内核设置为默认运行)
grub2-set-default 0

# restart
reboot

Reference:

开启TCP BBR拥塞控制算法

一键安装最新内核并开启 BBR 脚本