tcp_congestion_control

sudo modprobe tcp_bbr
sysctl net.ipv4.tcp_available_congestion_control
sysctl net.ipv4.tcp_congestion_control
sudo sysctl net.ipv4.tcp_congestion_control=bbr
sysctl net.ipv4.tcp_congestion_control

如果要下次重启依旧保留这个配置，需要将这个key=value添加到/etc/sysctl.d/下的文件中(我用的arch)，(/etc/sysctl.d/99-sysctl.conf)

From version 207 and 21x, systemd only applies settings from /etc/sysctl.d/*.conf and /usr/lib/sysctl.d/*.conf. If you had customized /etc/sysctl.conf, you need to rename it as /etc/sysctl.d/99-sysctl.conf. If you had e.g. /etc/sysctl.d/foo, you need to rename it to /etc/sysctl.d/foo.conf.

refs

• sysctl