安装4.9内核 rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm yum --enablerepo=elrepo-kernel install kernel-ml -y vi /etc/grub.conf 改 default=0 重启 uname -r看内核是不是4.9 执行 echo "net.core.default_qdisc=fq" >>