{"id":47,"date":"2019-04-09T11:41:05","date_gmt":"2019-04-09T03:41:05","guid":{"rendered":"https:\/\/cloudbool.com\/archive\/?p=47"},"modified":"2019-04-09T11:41:05","modified_gmt":"2019-04-09T03:41:05","slug":"centos7-update-kernel-bbr","status":"publish","type":"post","link":"https:\/\/cloudbool.com\/archive\/centos7-update-kernel-bbr.html","title":{"rendered":"CentOS7\u5347\u7ea7\u5185\u6838\u5e76\u542f\u7528BBR"},"content":{"rendered":"<p>BBR\u662fGoogle\u5f00\u53d1\u7684\u4e00\u79cd\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff0c\u8fd9\u4e2a\u7b97\u6cd5\u81ea\u4eceLinux 4.9\u7248\u672c\u5f00\u59cb\u96c6\u6210\u8fdb\u5185\u6838\uff0c\u8fd9\u4e2a\u529f\u80fd\u5bf9\u6211\u4eec\u73a9VPS\u6216\u8005\u56fd\u5916\u670d\u52a1\u5668\u7684\u6765\u8bf4\uff0c\u6700\u5927\u7684\u4f5c\u7528\u5c31\u662f\u80fd\u5728\u7ebf\u8def\u62e5\u5835\u6216\u8005\u665a\u9ad8\u5cf0\u7684\u60c5\u51b5\u4e0b\u63d0\u5347\u6211\u4eec\u672c\u5730\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u8bbf\u95ee\u901f\u5ea6\u3002<br \/>\n\u5c24\u5176\u662f\u79d1\u5b66\u4e0a\u7f51\u7684\u60c5\u51b5\u4e0b\uff0c\u542f\u7528BRR\u6bd4\u672a\u542f\u7528\u80fd\u5f97\u5230\u4e00\u4e2a\u5f88\u5927\u7684\u63d0\u5347\uff0c\u5728\u4e0d\u82b1\u8d39\u989d\u5916\u6210\u672c\u7684\u60c5\u51b5\u4e0b\u6709\u53ef\u80fd\u83b7\u5f97\u66f4\u597d\u7684\u670d\u52a1\u5668\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u4f53\u9a8c\u3002<br \/>\n<!--more--><br \/>\n\u672c\u6587\u5728\u5168\u7a0b\u5728Vultr\u7684VPS\u4e0a\u64cd\u4f5c\u5e76\u5168\u7a0b\u901a\u8fc7\uff0c\u5168\u740316\u4e2a\u673a\u623f\u53ef\u9009\u652f\u6301\u652f\u4ed8\u5b9d\u5fae\u4fe1\u4ed8\u6b3e\uff0c\u6708\u4ed82.5\u7f8e\u5143\u8d77\uff0c\u73b0\u5728\u6ce8\u518c\u8fd8\u8d60\u900130\u592950\u7f8e\u5143\u7684\u8d26\u6237\u4f59\u989d\uff0c\u6ce8\u518c\u94fe\u63a5\uff1a<a href=\"https:\/\/u.cloudbool.com\/vultrspecial\">Vultr<\/a>\u3002<br \/>\n\u63a8\u8350\u4f7f\u7528\u642c\u74e6\u5de5CN2 GIA\u7ebf\u8defVPS\uff0c\u5168\u7a0bCN2 GIA\u7ebf\u8def\uff0c\u5bf9\u6bd4\u5e38\u89c4\u7ebf\u8def\uff0c\u62bd\u98ce\u5c11\uff0c\u8bbf\u95ee\u901f\u5ea6\u5feb\uff0c\u56fd\u5185\u4e00\u6d41\u901f\u5ea6\uff1a<a href=\"https:\/\/u.cloudbool.com\/bwh\">\u642c\u74e6\u5de5<\/a>\u3002<\/p>\n<h2>\u5199\u5728\u5f00\u59cb<\/h2>\n<p>\u56e0\u4e3aBBR\u662f\u4eceLinux4.9\u624d\u5f00\u59cb\u96c6\u6210\u8fdbLinux\u5185\u6838\uff0c\u5982\u679c\u60f3\u8981\u542f\u7528BBR\uff0c\u9700\u8981\u5185\u6838Linux 4.9+\u7248\u672c\uff0c\u4f46\u662f\u56e0\u4e3aCentOS7\u7684\u8f6f\u4ef6\u7248\u672c\u7b56\u7565\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0bCentOS7\u7684\u5185\u6838\u7248\u672c\u4f1a\u4e00\u76f4\u7ef4\u6301\u57283.10.x\uff0c\u5982\u679c\u9700\u8981\u542f\u7528BBR\uff0c\u6211\u4eec\u9700\u8981\u5347\u7ea7\u5185\u6838\u7248\u672c\u81f34.9+\u3002\u5982\u679c\u662f\u6b63\u5f0f\u73af\u5883\u7684\u751f\u4ea7\u670d\u52a1\u5668\uff0c\u5efa\u8bae\u4e0d\u8981\u5347\u7ea7\uff0c\u56e0\u4e3a\u5347\u7ea7\u5185\u6838\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u4e0d\u7a33\u5b9a\uff0c\u6bd5\u7adf\u9009\u62e9CentOS7\u5f88\u5927\u7a0b\u5ea6\u4e0a\u662f\u4e3a\u4e86\u7a33\u5b9a\u3002<br \/>\n\u56e0\u4e3a\u7cfb\u7edf\u67b6\u6784\u9650\u5236\uff0cOpenVZ\u67b6\u6784\u7684VPS\u6b63\u5e38\u60c5\u51b5\u662f\u65e0\u6cd5\u66f4\u6539\u5185\u6838\u7684\uff0c\u53ea\u80fdKVM\u3001\u90e8\u5206XEN\u3001VMWare\u4ee5\u53caHyperV\u67b6\u6784\u7684VPS\u6216\u8005\u4e91\u4e3b\u673a\u624d\u652f\u6301\u66f4\u6362\u5185\u6838\uff0c\u5165\u624bVPS\u6216\u8005\u4e91\u4e3b\u673a\u7684\u9700\u8981\u6ce8\u610f\u4e0b\u3002<\/p>\n<h2>\u542f\u7528elrepo\u6e90<\/h2>\n<p>\u9700\u8981\u5c06\u5185\u6838\u5347\u7ea7\u52304.9+\uff0c\u6211\u4eec\u9700\u8981\u501f\u52a9elrepo\u6e90\uff0celrepo\u662f\u4e00\u4e2a\u786c\u4ef6\u76f8\u5173\u6e90\u4ed3\u5e93\uff0c\u63d0\u4f9b\u90e8\u5206\u786c\u4ef6\u76f8\u5173\u7684\u5305\u7528\u4ee5\u589e\u5f3aCentOS\/RHEL\u7b49\u7684\u7528\u6237\u4f7f\u7528\u4f53\u9a8c\u3002<br \/>\nelrepo\u6e90\u9879\u76ee\u4e3b\u4e1a\uff1ahttps:\/\/elrepo.org\/tiki\/tiki-index.php<br \/>\n\u914d\u7f6eelrepo\u6e90\u4e5f\u5f88\u7b80\u5355\uff0cCentOS7\u7cfb\u7edf\u7684\u8bdd\u53ea\u9700\u8981\u5982\u4e0b\u4e00\u884c\u547d\u4ee4\u5373\u53ef\u914d\u7f6e\u597d\uff1a<\/p>\n<pre><code>yum install https:\/\/www.elrepo.org\/elrepo-release-7.0-3.el7.elrepo.noarch.rpm\n<\/code><\/pre>\n<h2>\u5347\u7ea7CentOS7\u7cfb\u7edf\u5185\u6838<\/h2>\n<p>elrepo\u63d0\u4f9b\u4e24\u79cdLinux\u5185\u6838\u7248\u672c\uff0c\u5206\u522b\u662f\u957f\u671f\u652f\u6301\u7248\u672c\uff08kernel-lt\uff09\u548c\u4e3b\u7ebf\u7248\u672c\uff08kernel-ml\uff09\uff0c\u5f53\u524d\uff082019.04\uff09\u4e3b\u7ebf\u7248\u672c\u662f5.0\uff0c\u800c\u957f\u671f\u652f\u6301\u7248\u672c\u8fd8\u662f4.4\uff0c\u8981\u542f\u7528BBR\u8fd8\u662f\u9700\u8981\u5b89\u88c5\u957f\u671f\u652f\u6301\u7248\u672c\uff0c\u76f8\u5173\u547d\u4ee4\uff1a<\/p>\n<pre><code>yum --enablerepo=elrepo-kernel install kernel-ml\n<\/code><\/pre>\n<p>\u5b89\u88c5\u8fc7\u7a0b\u6709\u70b9\u6162\uff0c\u9700\u8981\u8010\u5fc3\u7b49\u5f85\u4e00\u4e0b\u3002<br \/>\n\u5982\u65e0\u610f\u5916\uff0c\u5e94\u8be5\u80fd\u770b\u5230\u5df2\u5b89\u88c5\u7684\u5185\u6838\uff1a<\/p>\n<pre><code>[root@cloudbool-Vultr ~]# rpm -qa | grep kernel\nkernel-tools-3.10.0-957.10.1.el7.x86_64\nkernel-3.10.0-957.10.1.el7.x86_64\nkernel-3.10.0-693.el7.x86_64\nkernel-tools-libs-3.10.0-957.10.1.el7.x86_64\nkernel-3.10.0-693.11.6.el7.x86_64\nkernel-ml-5.0.7-1.el7.elrepo.x86_64\n<\/code><\/pre>\n<p>\u4e0a\u9762\u6700\u540e\u4e00\u4e2akernel-ml\u5c31\u662f\u521a\u521a\u5b89\u88c5\u7684\u5185\u6838\u7248\u672c\uff0c\u8bf4\u660e\u5df2\u7ecf\u5b89\u88c5\u6210\u529f\u4e86\u3002<\/p>\n<h2>\u8c03\u6574\u5185\u6838\u542f\u52a8\u987a\u5e8f<\/h2>\n<p>\u9664\u4e86\u5b89\u88c5\u4e4b\u5916\uff0c\u8fd8\u9700\u8981\u8c03\u6574\u7cfb\u7edf\u542f\u52a8\u5185\u6838\u7684\u987a\u5e8f\uff0c\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u67e5\u770b\u6240\u6709\u53ef\u4f7f\u7528\u7684\u5185\u6838\u53ca\u5176\u987a\u5e8f\uff1a<\/p>\n<blockquote><p>\n  egrep ^menuentry \/etc\/grub2.cfg | cut -f 2 -d \\&#8217;\n<\/p><\/blockquote>\n<p>\u76f8\u5173\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n<pre><code>[root@cloudbool-Vultr ~]# egrep ^menuentry \/etc\/grub2.cfg | cut -f 2 -d \\'\nCentOS Linux (5.0.7-1.el7.elrepo.x86_64) 7 (Core)\nCentOS Linux 7 Rescue 07a8c022e26b4d7ab2c78893f381a99c (3.10.0-957.10.1.el7.x86_64)\nCentOS Linux (3.10.0-957.10.1.el7.x86_64) 7 (Core)\nCentOS Linux (3.10.0-693.11.6.el7.x86_64) 7 (Core)\nCentOS Linux (3.10.0-693.el7.x86_64) 7 (Core)\nCentOS Linux (0-rescue-00a62363617944e08db8db894ba6145e) 7 (Core)\n<\/code><\/pre>\n<p>\u5982\u4e0a\u8f93\u51fa\uff0c\u7b2c\u4e00\u4e2a\u5c31\u662f\u6211\u4eec\u521a\u521a\u5b89\u88c5\u7684\uff0c\u6211\u4eec\u53ea\u9700\u8bbe\u7f6e\u5176\u4e3a\u5f00\u673a\u542f\u52a8\u7684\u5185\u6838\u5373\u53ef\uff0c\u8bbe\u5b9a\u547d\u4ee4\uff1a<\/p>\n<pre><code>grub2-set-default 0\n<\/code><\/pre>\n<p>\u6ce8\u610f\uff0c\u4e0a\u9762\u6700\u540e\u4e00\u4e2a0\u662f4.9+\u5185\u6838\u6240\u5728\u7684\u4f4d\u7f6e\uff0c\u4ece0\u5f00\u59cb\u6570\uff0c\u7b2c\u4e00\u4e2a\u5c31\u662f0\uff0c\u7b2c\u4e8c\u4e2a\u662f1\uff0c\u4ee5\u6b64\u7c7b\u63a8\u5c31\u597d\u4e86\u3002<br \/>\n\u8bbe\u7f6e\u597d\u4e4b\u540e\uff0c\u9700\u8981\u91cd\u542f\u7cfb\u7edf\u624d\u80fd\u751f\u6548\uff1a<\/p>\n<blockquote><p>\n  reboot\n<\/p><\/blockquote>\n<h2>CentOS7\u542f\u7528BBR<\/h2>\n<p>\u91cd\u542f\u4e4b\u540e\uff0c\u5982\u679c\u6ca1\u6709\u610f\u5916\u5c31\u662f\u4f7f\u7528\u65b0\u7684\u5185\u6838\u4e86\uff0c\u53ef\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u67e5\u770b\u4f7f\u7528\u7684\u7248\u672c\uff1a<\/p>\n<pre><code>[root@cloudbool-Vultr ~]# uname -a\nLinux  5.0.7-1.el7.elrepo.x86_64 #1 SMP Fri Apr 5 18:07:52 EDT 2019 x86_64 x86_64 x86_64 GNU\/Linux\n<\/code><\/pre>\n<p>\u5982\u4e0a\u5c31\u662f\u4f7f\u7528\u4e86\u65b0\u7684\u5185\u6838\u4e86\uff0c\u63a5\u4e0b\u5c31\u662f\u542f\u7528BBR\u4e86\u3002<br \/>\n\u542f\u7528BBR\u4e5f\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u7b80\u5355\u4e09\u884c\u547d\u4ee4\u5c31\u53ef\u4ee5\uff1a<\/p>\n<pre><code>echo \"net.core.default_qdisc=fq\" &gt;&gt; \/etc\/sysctl.conf\necho \"net.ipv4.tcp_congestion_control=bbr\" &gt;&gt; \/etc\/sysctl.conf\nsysctl -p\n<\/code><\/pre>\n<p>\u5982\u679c\u6ca1\u6709\u8f93\u51fa\u62a5\u9519\u4fe1\u606f\uff0c\u5c31\u8bf4\u660e\u542f\u7528\u6210\u529f\u4e86\uff0c\u53ef\u901a\u8fc7\u5982\u4e0b\u4e24\u79cd\u65b9\u5f0f\u8fdb\u884c\u9a8c\u8bc1\uff1a<\/p>\n<pre><code>sysctl -n net.ipv4.tcp_congestion_control\nlsmod | grep bbr\n<\/code><\/pre>\n<p>\u5982\u679c\u4e24\u884c\u547d\u4ee4\u90fd\u6709BBR\u5b57\u6837\u8f93\u51fa\uff0c\u5219\u4ee3\u8868BBR\u542f\u7528\u6210\u529f\u3002<\/p>\n<h3>CentOS8\u7cfb\u7edf\u600e\u4e48\u542f\u7528BBR<\/h3>\n<p>\u8fd9\u662fCentOS7\u7684\u542f\u7528\u65b9\u6cd5\uff0c\u5982\u679c\u7cfb\u7edf\u662fCentOS8\uff0c\u53ef\u4ee5\u79fb\u6b65\u8fd9\u91cc\uff1a<a href=\"https:\/\/cloudbool.com\/archive\/centos8-bbr.html\">CentOS8\u7cfb\u7edf\u542f\u7528BBR<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>BBR\u662fGoogle\u5f00\u53d1\u7684\u4e00\u79cd\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff0c\u8fd9\u4e2a\u7b97\u6cd5\u81ea\u4eceLinux 4.9\u7248\u672c\u5f00\u59cb\u96c6\u6210\u8fdb\u5185\u6838\uff0c\u8fd9\u4e2a\u529f\u80fd\u5bf9\u6211\u4eec\u73a9 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/cloudbool.com\/archive\/centos7-update-kernel-bbr.html\"> <span class=\"screen-reader-text\">CentOS7\u5347\u7ea7\u5185\u6838\u5e76\u542f\u7528BBR<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[138],"tags":[143,17,63],"class_list":["post-47","post","type-post","status-publish","format-standard","hentry","category-share","tag-bbr","tag-centos","tag-linux"],"_links":{"self":[{"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/posts\/47","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/comments?post=47"}],"version-history":[{"count":0,"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/posts\/47\/revisions"}],"wp:attachment":[{"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/media?parent=47"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/categories?post=47"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cloudbool.com\/archive\/wp-json\/wp\/v2\/tags?post=47"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}