{"id":1077,"date":"2020-07-30T15:31:18","date_gmt":"2020-07-30T07:31:18","guid":{"rendered":"http:\/\/www.shuran.cn\/?p=1077"},"modified":"2020-08-01T09:03:38","modified_gmt":"2020-08-01T01:03:38","slug":"centos-7-%e6%9b%b4%e6%96%b0%e5%86%85%e6%a0%b8%e4%b8%8abbr","status":"publish","type":"post","link":"https:\/\/www.shuran.cn\/?p=1077","title":{"rendered":"Centos 7 \u66f4\u65b0\u5185\u6838\u4e0abbr"},"content":{"rendered":"\n<pre class=\"wp-block-preformatted\"># rpm --import https:\/\/www.elrepo.org\/RPM-GPG-KEY-elrepo.org\n# rpm -Uvh http:\/\/www.elrepo.org\/elrepo-release-7.0-2.el7.elrepo.noarch.rpm\n# yum --enablerepo=elrepo-kernel install kernel-ml -y\n# rpm -qa | grep kernel<\/pre>\n\n\n\n<pre class=\"wp-block-preformatted\">\u8bbe\u7f6e\u9ed8\u8ba4\u542f\u52a8\u5185\u6838\n# awk -F\\' '$1==\"menuentry \" {print i++ \" : \" $2}' \/etc\/grub2.cfg \n0 : CentOS Linux (5.4.13-1.el7.elrepo.x86_64) 7 (Core) \n1 : CentOS Linux (5.4.13-1.el7.elrepo.x86_64) 7 (Core) with debugging \n2 : CentOS Linux (3.10.0-1062.9.1.el7.x86_64) 7 (Core) \n3 : CentOS Linux (3.10.0-1062.9.1.el7.x86_64) 7 (Core) with debugging \n4 : CentOS Linux 7 (Core), with Linux 0-rescue-8cc82c5d44814ef58be1f76d8536afe\n\n# grub2-set-default 0 \n# grub2-mkconfig -o \/boot\/grub2\/grub.cfg \n# shutdown -r now<\/pre>\n\n\n\n<pre class=\"wp-block-preformatted\">\u542f\u52a8BBR\n# echo 'net.core.default_qdisc=fq' | tee -a \/etc\/sysctl.conf\n# echo 'net.ipv4.tcp_congestion_control=bbr' | tee -a \/etc\/sysctl.conf\n# sysctl -p\n# sysctl net.ipv4.tcp_available_congestion_control\n# sysctl -n net.ipv4.tcp_congestion_control\n# lsmod | grep bbr<\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p># rpm --import https:\/\/www.elrepo.org\/RPM-GPG-KEY-elrep\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.shuran.cn\/?p=1077\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-1077","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1077","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1077"}],"version-history":[{"count":3,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1077\/revisions"}],"predecessor-version":[{"id":1080,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1077\/revisions\/1080"}],"wp:attachment":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}