{"id":33410,"date":"2026-06-16T17:02:26","date_gmt":"2026-06-16T09:02:26","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/configure-bbr-to-improve-the-throughput-of-hk-cn2-servers\/"},"modified":"2026-06-16T17:06:33","modified_gmt":"2026-06-16T09:06:33","slug":"configure-bbr-to-improve-the-throughput-of-hk-cn2-servers","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/knowledge\/configure-bbr-to-improve-the-throughput-of-hk-cn2-servers\/","title":{"rendered":"\u5982\u4f55\u914d\u7f6e BBR \u52a0\u901f\u4ee5\u63d0\u5347\u9999\u6e2f CN2 \u670d\u52a1\u5668\u541e\u5410\u91cf"},"content":{"rendered":"<style>\n    table, th, td {\n        border: 1px solid black;\n        border-collapse: collapse;\n    }\n<\/style>\n<p>\u5982\u679c\u4f60\u60f3\u63d0\u5347<a target=\"_self\" href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\">\u9999\u6e2f CN2 \u670d\u52a1\u5668<\/a>\u7684\u7f51\u7edc\u541e\u5410\u91cf\uff0cBBR \u52a0\u901f\u662f\u4e00\u79cd\u73b0\u4ee3\u5316\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u83b7\u5f97\u66f4\u9ad8\u901f\u5ea6\u548c\u66f4\u4f4e\u5ef6\u8fdf\u3002\u5728 Linux \u670d\u52a1\u5668\u4e0a\uff0cBBR \u62e5\u585e\u63a7\u5236\u4f9d\u9760\u5e26\u5bbd\u548c\u5ef6\u8fdf\u4f30\u7b97\uff0c\u800c\u4e0d\u662f\u4e22\u5305\u4fe1\u53f7\uff0c\u8fd9\u5bf9\u5927\u5e26\u5bbd-\u65f6\u5ef6\u79ef\u94fe\u8def\u5c24\u4e3a\u6709\u5229\u3002\u8bb8\u591a\u4e9a\u592a\u673a\u623f\u7684\u7528\u6237\u62a5\u544a\u4e86\u4ee5\u4e0b\u597d\u5904\uff1a<\/p>\n<ul>\n<li>\n<p>\u4e0e Cubic \u7b49\u4f20\u7edf\u7b97\u6cd5\u76f8\u6bd4\uff0c\u6709\u660e\u663e\u7684\u6709\u6548\u541e\u5410\uff08goodput\uff09\u63d0\u5347<\/p>\n<\/li>\n<li>\n<p>\u5728\u9ad8\u5ef6\u8fdf\u548c\u9ad8\u5e26\u5bbd\u573a\u666f\u4e0b\uff0c\u6709\u65f6\u53ef\u63d0\u5347\u9ad8\u8fbe 115% \u7684\u6709\u6548\u541e\u5410<\/p>\n<\/li>\n<li>\n<p>\u5728\u9ad8\u8d1f\u8f7d\u573a\u666f\u4e0b\u4ecd\u80fd\u4fdd\u6301\u7a33\u5b9a\u8868\u73b0<\/p>\n<\/li>\n<\/ul>\n<p>\u53ea\u8981\u5728\u914d\u7f6e\u8fc7\u7a0b\u4e2d\u9075\u5faa\u6700\u4f73\u5b9e\u8df5\uff0c\u4f60\u5c31\u80fd\u83b7\u5f97\u5e73\u6ed1\u4e14\u6301\u4e45\u7684\u52a0\u901f\u6548\u679c\u3002<\/p>\n<h2>\u5173\u952e\u8981\u70b9<\/h2>\n<ul>\n<li>\n<p>BBR \u52a0\u901f\u901a\u8fc7\u4f30\u7b97\u5e26\u5bbd\u548c\u5f80\u8fd4\u65f6\u5ef6\uff08RTT\uff09\uff0c\u800c\u4e0d\u662f\u4f9d\u8d56\u4e22\u5305\u4fe1\u53f7\uff0c\u4ece\u800c\u63d0\u5347\u7f51\u7edc\u541e\u5410\u5e76\u964d\u4f4e\u5ef6\u8fdf\u3002<\/p>\n<\/li>\n<li>\n<p>\u542f\u7528 BBR \u524d\u9700\u786e\u4fdd Linux \u5185\u6838\u7248\u672c\u4e0d\u4f4e\u4e8e 4.9\u3002\u5982\u6709\u9700\u8981\uff0c\u53ef\u5728 CentOS \u4e2d\u4f7f\u7528 ELRepo \u7b49\u5de5\u5177\u8fdb\u884c\u5185\u6838\u5347\u7ea7\u3002<\/p>\n<\/li>\n<li>\n<p>\u901a\u8fc7 sysctl \u547d\u4ee4\u5c06\u9ed8\u8ba4\u961f\u5217\u7b97\u6cd5\u8bbe\u7f6e\u4e3a \u201cfq\u201d\uff0c\u5e76\u5c06 TCP \u62e5\u585e\u63a7\u5236\u8bbe\u7f6e\u4e3a \u201cbbr\u201d\uff0c\u53ef\u83b7\u5f97\u66f4\u4f73\u6027\u80fd\u3002<\/p>\n<\/li>\n<li>\n<p>\u5c06 BBR \u76f8\u5173\u914d\u7f6e\u4fdd\u5b58\u5230 <code>\/etc\/sysctl.d\/99-bbr.conf<\/code> \u4e2d\uff0c\u5e76\u786e\u4fdd BBR \u6a21\u5757\u5f00\u673a\u81ea\u52a8\u52a0\u8f7d\uff0c\u4ee5\u5b9e\u73b0\u6301\u4e45\u751f\u6548\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u542f\u7528 BBR \u524d\u540e\u4f7f\u7528 iperf3 \u548c ping \u7b49\u5de5\u5177\u6d4b\u8bd5\u7f51\u7edc\u6027\u80fd\uff0c\u4ee5\u5bf9\u6bd4\u541e\u5410\u548c\u5ef6\u8fdf\u7684\u6539\u8fdb\u60c5\u51b5\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>BBR \u62e5\u585e\u63a7\u5236\u6982\u89c8<\/h2>\n<h3>\u4ec0\u4e48\u662f BBR \u62e5\u585e\u63a7\u5236<\/h3>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528 BBR \u6765\u63d0\u5347\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6027\u80fd\u3002\u4e0e CUBIC \u6216 Reno \u7b49\u4f20\u7edf\u65b9\u6cd5\u4e0d\u540c\uff0c\u8fd9\u79cd\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u5e76\u4e0d\u4f9d\u8d56\u4e22\u5305\u6765\u5224\u65ad\u62e5\u585e\u60c5\u51b5\u3002BBR \u62e5\u585e\u63a7\u5236\u4f1a\u4f30\u7b97\u74f6\u9888\u5e26\u5bbd\u548c\u5f80\u8fd4\u4f20\u64ad\u65f6\u95f4\uff0c\u901a\u8fc7\u6d4b\u91cf\u53ef\u7528\u5e26\u5bbd\u548c\u6700\u5c0f\u5f80\u8fd4\u65f6\u5ef6\uff08RTT\uff09\uff0c\u6784\u5efa\u4e00\u4e2a\u7f51\u7edc\u6a21\u578b\u3002\u4f60\u4f1a\u53d7\u76ca\u4e8e\u8fd9\u79cd\u505a\u6cd5\uff0c\u56e0\u4e3a BBR \u4f1a\u6839\u636e\u6d4b\u5f97\u7684\u7ed3\u679c\u52a8\u6001\u8c03\u6574\u53d1\u9001\u8282\u594f\uff08pacing rate\uff09\u548c\u62e5\u585e\u7a97\u53e3\uff0c\u4ece\u800c\u5e2e\u52a9\u4f60\u5728\u4fdd\u6301\u8f83\u4f4e\u5ef6\u8fdf\u7684\u540c\u65f6\u83b7\u5f97\u66f4\u4f18\u7684\u541e\u5410\u91cf\u3002<\/p>\n<blockquote>\n<p>\u6ce8\u610f\uff1aBBR \u52a0\u901f\u4e3b\u8981\u4f9d\u8d56\u4e24\u4e2a\u5173\u952e\u53c2\u6570\u2014\u2014\u53d1\u9001\u8282\u594f\uff08pacing rate\uff09\u548c\u62e5\u585e\u7a97\u53e3\uff08CWND\uff09\u2014\u2014\u6765\u63a7\u5236\u670d\u52a1\u5668\u53d1\u9001\u6570\u636e\u7684\u901f\u5ea6\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u964d\u4f4e\u62e5\u585e\uff0c\u5e76\u4fdd\u6301\u8f83\u5c0f\u7684\u961f\u5217\u957f\u5ea6\u3002<\/p>\n<\/blockquote>\n<p>\u5728 TCP BBR \u4e2d\uff0c\u4f60\u53ef\u4ee5\u770b\u5230\u591a\u9879\u6709\u52a9\u4e8e\u63d0\u5347\u541e\u5410\u91cf\u7684\u5173\u952e\u7279\u6027\uff1a<\/p>\n<ul>\n<li>\n<p>\u5e26\u5bbd\u4f30\u7b97\uff1a\u901a\u8fc7\u5206\u6790\u6570\u636e\u5305\u7684\u4f20\u8f93\u901f\u7387\u6765\u6d4b\u91cf\u53ef\u7528\u5e26\u5bbd\u3002<\/p>\n<\/li>\n<li>\n<p>RTT \u4f30\u7b97\uff1a\u7ef4\u62a4\u6700\u5c0f\u548c\u57fa\u7840 RTT\uff0c\u5e76\u636e\u6b64\u8c03\u6574\u53d1\u9001\u8282\u594f\uff0c\u4ece\u800c\u964d\u4f4e\u5ef6\u8fdf\u3002<\/p>\n<\/li>\n<li>\n<p>\u74f6\u9888\u94fe\u8def\u68c0\u6d4b\uff1a\u5229\u7528\u63a2\u6d4b\u548c RTT \u53cd\u9988\u8bc6\u522b\u771f\u6b63\u7684\u74f6\u9888\u94fe\u8def\u3002<\/p>\n<\/li>\n<li>\n<p>\u62e5\u585e\u7a97\u53e3\u7ba1\u7406\uff1a\u6839\u636e pacing \u589e\u76ca\u548c\u63a2\u6d4b\u7ed3\u679c\u8c03\u6574\u8f6c\u53d1\u901f\u7387\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f4e\u5ef6\u8fdf\u8fd0\u884c\uff1a\u4fdd\u6301\u961f\u5217\u957f\u5ea6\u5c3d\u53ef\u80fd\u5c0f\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u964d\u4f4e\u5ef6\u8fdf\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u4e3a\u4ec0\u4e48\u5728\u9999\u6e2f CN2 \u670d\u52a1\u5668\u4e0a\u4f7f\u7528 BBR \u52a0\u901f<\/h3>\n<p>\u9999\u6e2f CN2 \u670d\u52a1\u5668\u9762\u4e34\u4e00\u4e9b\u72ec\u7279\u7684\u7f51\u7edc\u73af\u5883\u6311\u6218\u3002\u672c\u5730\u8bbf\u95ee\u901f\u5ea6\u5f80\u5f80\u53ef\u4ee5\u8fbe\u5230 1Gbps\uff0c\u4f46\u56fd\u9645\u5e26\u5bbd\u5374\u53ef\u80fd\u88ab\u9650\u5236\u5728 20Mbps \u5de6\u53f3\u3002\u8def\u7531\u7ed5\u884c\u8f83\u4e3a\u5e38\u89c1\uff0c\u5e76\u4e14\u53ea\u6709\u4e2d\u56fd\u79fb\u52a8\u63d0\u4f9b\u76f4\u8fde\u56de\u7a0b\u8def\u7531\u3002\u8fd9\u4e9b\u95ee\u9898\u4f1a\u5bfc\u81f4\u66f4\u9ad8\u7684\u5ef6\u8fdf\u5e76\u9650\u5236\u541e\u5410\u91cf\u3002<\/p>\n<p>\u901a\u8fc7\u90e8\u7f72 BBR \u52a0\u901f\uff0c\u4f60\u53ef\u4ee5\u6b63\u9762\u5e94\u5bf9\u8fd9\u4e9b\u6311\u6218\u3002\u501f\u52a9\u8fd9\u5957\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff0c\u4f60\u53ef\u4ee5\u9488\u5bf9\u672c\u5730\u548c\u56fd\u9645\u8bbf\u95ee\u7528\u6237\u5bf9\u670d\u52a1\u5668\u6027\u80fd\u8fdb\u884c\u4f18\u5316\u3002BBR \u6709\u52a9\u4e8e\u4f60\u7a81\u7834\u94fe\u8def\u74f6\u9888\u3001\u51cf\u5c11\u65f6\u5ef6\u3002\u540c\u65f6\uff0c\u4f60\u4e5f\u53ef\u4ee5\u4f18\u5316 qdisc\uff08\u961f\u5217\u8c03\u5ea6\uff09\u8bbe\u7f6e\uff0c\u4ee5\u8fdb\u4e00\u6b65\u63d0\u5347\u7f51\u7edc\u6548\u7387\u3002\u5f53\u4f60\u542f\u7528 BBR \u65f6\uff0c\u4f60\u7684\u9999\u6e2f CN2 \u670d\u52a1\u5668\u4f1a\u53d8\u5f97\u66f4\u52a0\u7a33\u5b9a\u3001\u54cd\u5e94\u66f4\u5feb\u3002<\/p>\n<h2>Linux \u73af\u5883\u4e0b\u542f\u7528 BBR \u52a0\u901f\u7684\u524d\u7f6e\u6761\u4ef6<\/h2>\n<h3>\u5185\u6838\u7248\u672c\u8981\u6c42<\/h3>\n<p>\u5728\u542f\u7528 BBR \u4e4b\u524d\uff0c\u4f60\u5fc5\u987b\u5148\u68c0\u67e5 Linux \u5185\u6838\u7248\u672c\u3002\u8be5\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u8981\u6c42\u5185\u6838\u7248\u672c\u4e0d\u4f4e\u4e8e 4.9\u3002\u5927\u591a\u6570\u73b0\u4ee3\u53d1\u884c\u7248\uff08\u5982 CentOS 7\u3001CentOS 8\u3001CentOS Stream\u3001AlmaLinux \u548c Rocky Linux\uff09\u90fd\u5df2\u6ee1\u8db3\u8fd9\u4e00\u8981\u6c42\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5f53\u524d\u5185\u6838\u7248\u672c\uff1a<\/p>\n<pre><code>uname -r\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5f53\u524d\u5185\u6838\u7248\u672c\u4f4e\u4e8e 4.9\uff0c\u5c31\u9700\u8981\u8fdb\u884c\u5347\u7ea7\u3002CentOS \u7528\u6237\u901a\u5e38\u4f1a\u501f\u52a9 ELRepo \u4ed3\u5e93\u6765\u66f4\u65b0\u5185\u6838\uff1bAlmaLinux \u548c Rocky Linux \u901a\u5e38\u9ed8\u8ba4\u63d0\u4f9b\u8f83\u65b0\u7684\u5185\u6838\u3002\u5728\u5347\u7ea7\u5185\u6838\u4e4b\u524d\uff0c\u4f60\u5e94\u5f53\u5148\u5907\u4efd\u597d\u91cd\u8981\u6570\u636e\u3002Linux \u5185\u6838\u7248\u672c\u51b3\u5b9a\u4e86\u4f60\u662f\u5426\u53ef\u4ee5\u4f7f\u7528 BBR \u4f5c\u4e3a\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u3002<\/p>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u4f60\u53ef\u4ee5\u901a\u8fc7\u9605\u8bfb\u53d1\u884c\u7248\u5b98\u65b9\u6587\u6863\u6765\u786e\u8ba4\u517c\u5bb9\u6027\u3002CentOS\u3001AlmaLinux \u548c Rocky Linux \u90fd\u63d0\u4f9b\u5185\u6838\u5347\u7ea7\u7684\u76f8\u5173\u6307\u5357\u3002<\/p>\n<\/blockquote>\n<h3>\u51c6\u5907 Linux \u670d\u52a1\u5668\u73af\u5883<\/h3>\n<p>\u5728\u542f\u7528 BBR \u52a0\u901f\u4e4b\u524d\uff0c\u4f60\u9700\u8981\u5148\u5bf9 Linux \u670d\u52a1\u5668\u8fdb\u884c\u4e00\u4e9b\u51c6\u5907\u5de5\u4f5c\u3002\u9996\u5148\u66f4\u65b0\u7cfb\u7edf\u8f6f\u4ef6\u5305\u3002\u5728 CentOS \u4e0a\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>sudo yum update -y\r\n<\/code><\/pre>\n<p>\u63a5\u7740\uff0c\u786e\u8ba4\u5f53\u524d\u5185\u6838\u662f\u5426\u652f\u6301\u516c\u5e73\u961f\u5217\uff08fair queueing\uff09\u6570\u636e\u5305\u8c03\u5ea6\u5668\u3002\u8be5\u8c03\u5ea6\u5668\u80fd\u591f\u4f18\u5316\u6570\u636e\u5305\u5904\u7406\uff0c\u5e76\u4e0e BBR \u914d\u5408\u826f\u597d\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5f53\u524d\u9ed8\u8ba4\u961f\u5217\u8c03\u5ea6\u5668\uff1a<\/p>\n<pre><code>sysctl net.core.default_qdisc\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u83b7\u5f97\u6700\u4f73\u6548\u679c\uff0c\u4f60\u5e94\u8be5\u5c06\u9ed8\u8ba4\u961f\u5217\u8c03\u5ea6\u5668\u8bbe\u7f6e\u4e3a <code>fq<\/code>\u3002\u53ef\u4f7f\u7528 sysctl \u547d\u4ee4\u8fdb\u884c\u8bbe\u7f6e\uff1a<\/p>\n<pre><code>sysctl -w net.core.default_qdisc=fq\r\n<\/code><\/pre>\n<p>\u4f60\u8fd8\u9700\u8981\u901a\u8fc7 sysctl \u6307\u5b9a BBR \u4f5c\u4e3a TCP \u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u3002\u5c06 TCP \u62e5\u585e\u63a7\u5236\u8bbe\u7f6e\u4e3a <code>bbr<\/code>\uff1a<\/p>\n<pre><code>sysctl -w net.ipv4.tcp_congestion_control=bbr\r\n<\/code><\/pre>\n<p>\u968f\u540e\uff0c\u4f60\u5e94\u5c06\u4e0a\u8ff0 sysctl \u8bbe\u7f6e\u5199\u5165 <code>\/etc\/sysctl.conf<\/code> \u6216\u4e13\u7528\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u4ee5\u786e\u4fdd\u670d\u52a1\u5668\u91cd\u542f\u540e BBR \u4ecd\u7136\u751f\u6548\u3002\u4f60\u8fd8\u9700\u8981\u68c0\u67e5\u6570\u636e\u5305\u5904\u7406\u884c\u4e3a\uff0c\u786e\u8ba4\u670d\u52a1\u5668\u5df2\u7ecf\u4f7f\u7528\u6b63\u786e\u7684\u961f\u5217\u8c03\u5ea6\u5668\u548c\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u3002<\/p>\n<blockquote>\n<p>\u6ce8\u610f\uff1a\u4fee\u6539 sysctl \u914d\u7f6e\u540e\u4e00\u5b9a\u8981\u5bf9\u7f51\u7edc\u8fdb\u884c\u6d4b\u8bd5\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 ping \u6216 iperf3 \u68c0\u67e5\u4e22\u5305\u7387\u548c\u5ef6\u8fdf\u3002<\/p>\n<\/blockquote>\n<h2>\u5206\u6b65\u914d\u7f6e BBR \u52a0\u901f<\/h2>\n<h3>\u68c0\u67e5 Linux \u5185\u6838\u7248\u672c<\/h3>\n<p>\u5728\u5f00\u59cb\u914d\u7f6e BBR \u52a0\u901f\u524d\uff0c\u4f60\u5fc5\u987b\u5148\u68c0\u67e5\u5185\u6838\u7248\u672c\u3002\u5185\u6838\u7248\u672c\u51b3\u5b9a\u670d\u52a1\u5668\u662f\u5426\u652f\u6301\u8be5\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u7b80\u5355\u547d\u4ee4\u83b7\u53d6\u5f53\u524d\u5185\u6838\u7248\u672c\uff1a<\/p>\n<ul>\n<li>\n<p>\u8fd0\u884c <code>uname -r<\/code> \u663e\u793a\u5f53\u524d\u5185\u6838\u7248\u672c\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u7cfb\u7edf\u91cd\u542f\u540e\uff0c\u518d\u6b21\u8fd0\u884c <code>uname -r<\/code>\uff0c\u786e\u8ba4\u6700\u65b0\u5185\u6838\u5df2\u751f\u6548\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5982\u679c\u5185\u6838\u7248\u672c\u5927\u4e8e 4.9\uff0c\u5c31\u53ef\u4ee5\u7ee7\u7eed\u4e0b\u4e00\u6b65\uff1b\u5426\u5219\u9700\u8981\u5148\u8fdb\u884c\u5347\u7ea7\u3002\u5728 CentOS \u4e0a\uff0c\u4f60\u53ef\u4ee5\u6309\u5982\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\n<p>\u5bfc\u5165 ELRepo GPG \u5bc6\u94a5\u5e76\u5b89\u88c5\u4ed3\u5e93\uff1a<\/p>\n<pre><code>sudo rpm --import https:\/\/www.elrepo.org\/RPM-GPG-KEY-elrepo.org\r\nsudo rpm -Uvh https:\/\/www.elrepo.org\/elrepo-release-7.el7.elrepo.noarch.rpm\r\n<\/code><\/pre>\n<\/li>\n<li>\n<p>\u5b89\u88c5\u6700\u65b0\u4e3b\u7ebf\u5185\u6838\uff1a<\/p>\n<pre><code>sudo yum --enablerepo=elrepo-kernel install kernel-ml -y\r\n<\/code><\/pre>\n<\/li>\n<li>\n<p>\u5c06\u65b0\u5185\u6838\u8bbe\u7f6e\u4e3a\u9ed8\u8ba4\u542f\u52a8\u9879\uff1a<\/p>\n<pre><code>sudo grub2-set-default 0\r\n<\/code><\/pre>\n<\/li>\n<li>\n<p>\u91cd\u65b0\u751f\u6210 GRUB \u914d\u7f6e\uff1a<\/p>\n<pre><code>sudo grub2-mkconfig -o \/boot\/grub2\/grub.cfg\r\n<\/code><\/pre>\n<\/li>\n<li>\n<p>\u91cd\u542f\u670d\u52a1\u5668\uff1a<\/p>\n<pre><code>sudo reboot\r\n<\/code><\/pre>\n<\/li>\n<li>\n<p>\u91cd\u542f\u540e\u518d\u6b21\u9a8c\u8bc1\u5185\u6838\u7248\u672c\uff1a<\/p>\n<pre><code>uname -r\r\n<\/code><\/pre>\n<\/li>\n<\/ol>\n<p>\u4f60\u5e94\u5f53\u770b\u5230\u4e00\u4e2a\u9ad8\u4e8e 4.9 \u7684\u7248\u672c\u53f7\uff0c\u8fd9\u8868\u793a\u670d\u52a1\u5668\u5df2\u4e3a BBR \u52a0\u901f\u505a\u597d\u51c6\u5907\u3002<\/p>\n<h3>\u542f\u7528 BBR \u52a0\u901f<\/h3>\n<p>\u8981\u542f\u7528 BBR \u52a0\u901f\uff0c\u9700\u8981\u8bbe\u7f6e\u6b63\u786e\u7684 sysctl \u53c2\u6570\u3002\u8fd9\u4e9b\u53c2\u6570\u63a7\u5236\u670d\u52a1\u5668\u5982\u4f55\u5904\u7406\u7f51\u7edc\u6d41\u91cf\u3002\u4f60\u9700\u8981\u7f16\u8f91 sysctl \u914d\u7f6e\u6587\u4ef6\uff1a\u6253\u5f00 <code>\/etc\/sysctl.conf<\/code>\uff0c\u6216\u5728 <code>\/etc\/sysctl.d\/99-bbr.conf<\/code> \u521b\u5efa\u4e00\u4e2a\u65b0\u6587\u4ef6\uff0c\u5e76\u5199\u5165\u5982\u4e0b\u5185\u5bb9\uff1a<\/p>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n          <\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u53c2\u6570<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u53d6\u503c<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>net.core.default_qdisc<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>fq<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>net.ipv4.tcp_congestion_control<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>bbr<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>\u4fdd\u5b58\u6587\u4ef6\u540e\uff0c\u5e94\u7528\u914d\u7f6e\uff1a<\/p>\n<pre><code>sudo sysctl --system\r\n<\/code><\/pre>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528 <code>sudo sysctl -p<\/code> \u6765\u91cd\u65b0\u52a0\u8f7d\u8bbe\u7f6e\u3002\u8fd9\u4e9b\u66f4\u6539\u4f1a\u542f\u7528 BBR\uff0c\u5e76\u5c06\u7f51\u7edc\u961f\u5217\u8c03\u5ea6\u5668\u8bbe\u7f6e\u4e3a\u516c\u5e73\u961f\u5217\uff08fq\uff09\uff0c\u5e2e\u52a9\u4f60\u4f18\u5316\u670d\u52a1\u5668\u7684\u541e\u5410\u91cf\u548c\u5ef6\u8fdf\u8868\u73b0\u3002<\/p>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u4f60\u53ef\u4ee5\u901a\u8fc7 <code>sudo modprobe tcp_bbr<\/code> \u624b\u52a8\u52a0\u8f7d BBR \u6a21\u5757\uff0c\u5e76\u4f7f\u7528 <code>lsmod | grep bbr<\/code> \u68c0\u67e5\u6a21\u5757\u662f\u5426\u5df2\u6210\u529f\u52a0\u8f7d\u3002<\/p>\n<\/blockquote>\n<h3>\u8ba9 BBR \u914d\u7f6e\u6301\u4e45\u751f\u6548<\/h3>\n<p>\u4f60\u9700\u8981\u786e\u4fdd BBR \u914d\u7f6e\u80fd\u591f\u5728\u91cd\u542f\u540e\u81ea\u52a8\u751f\u6548\u3002\u8fd9\u4e00\u6b65\u53ef\u4ee5\u8ba9 BBR \u52a0\u901f\u5728\u6bcf\u6b21\u7cfb\u7edf\u542f\u52a8\u65f6\u90fd\u81ea\u52a8\u542f\u7528\u3002\u63a8\u8350\u5728 <code>\/etc\/sysctl.d\/<\/code> \u4e0b\u521b\u5efa\u5355\u72ec\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u8ffd\u52a0\u5230 <code>\/etc\/sysctl.conf<\/code>\uff0c\u8fd9\u6837\u4fbf\u4e8e\u7ba1\u7406\u548c\u6392\u67e5\u91cd\u590d\u6761\u76ee\u3002<\/p>\n<ul>\n<li>\n<p>\u521b\u5efa <code>\/etc\/sysctl.d\/99-bbr.conf<\/code>\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>net.core.default_qdisc=fq\r\nnet.ipv4.tcp_congestion_control=bbr\r\n<\/code><\/pre>\n<\/li>\n<li>\n<p>\u786e\u4fdd BBR \u6a21\u5757\u5728\u542f\u52a8\u65f6\u81ea\u52a8\u52a0\u8f7d\uff0c\u53ef\u521b\u5efa <code>\/etc\/modules-load.d\/bbr.conf<\/code> \u6587\u4ef6\uff1a<\/p>\n<pre><code>tcp_bbr\r\n<\/code><\/pre>\n<\/li>\n<li>\n<p>\u5982\u679c\u8be5\u6a21\u5757\u52a0\u8f7d\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u53ef\u6267\u884c\uff1a<\/p>\n<pre><code>echo 'tcp_bbr' | sudo tee \/etc\/modules-load.d\/bbr.conf\r\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<p>\u7136\u540e\u5e94\u7528\u65b0\u7684 sysctl \u8bbe\u7f6e\uff1a<\/p>\n<pre><code>sudo sysctl --system\r\n<\/code><\/pre>\n<blockquote>\n<p>\u6ce8\u610f\uff1a\u4f7f\u7528\u72ec\u7acb\u7684 sysctl \u914d\u7f6e\u6587\u4ef6\uff0c\u4fbf\u4e8e\u4f60\u5728\u4e0d\u540c Linux \u53d1\u884c\u7248\u4e2d\u5feb\u901f\u5ba1\u8ba1\u3001\u91cd\u7528\u6216\u79fb\u9664 BBR \u52a0\u901f\u914d\u7f6e\u3002<\/p>\n<\/blockquote>\n<h3>\u9a8c\u8bc1 BBR \u662f\u5426\u5df2\u542f\u7528<\/h3>\n<p>\u63a5\u4e0b\u6765\uff0c\u4f60\u9700\u8981\u786e\u8ba4\u670d\u52a1\u5668\u662f\u5426\u5df2\u7ecf\u6210\u529f\u542f\u7528 BBR\u3002\u53ef\u4ee5\u4f7f\u7528\u591a\u6761\u547d\u4ee4\u68c0\u67e5\u5f53\u524d\u7684\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u548c\u961f\u5217\u8c03\u5ea6\u65b9\u5f0f\uff0c\u5e76\u786e\u8ba4 BBR \u662f\u5426\u6b63\u5728\u7ba1\u7406\u7f51\u7edc\u8fde\u63a5\u3002<\/p>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n          <\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u547d\u4ee4<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u7528\u9014<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>sudo sysctl net.ipv4.tcp_congestion_control<\/code><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u68c0\u67e5\u5f53\u524d\u4f7f\u7528\u7684\u62e5\u585e\u63a7\u5236\u7b97\u6cd5<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>sudo sysctl net.core.default_qdisc<\/code><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u786e\u8ba4\u9ed8\u8ba4\u961f\u5217\u8c03\u5ea6\u5668\u662f\u5426\u4e3a Fair Queue<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>lsmod<\/code><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>grep bbr<\/code><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>ss -ti<\/code><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>grep -i bbr<\/code><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>\u4f60\u671f\u671b\u770b\u5230\u7c7b\u4f3c\u5982\u4e0b\u7684\u7ed3\u679c\uff1a<\/p>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n          <\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u547d\u4ee4<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u9884\u671f\u8f93\u51fa<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>sysctl net.ipv4.tcp_congestion_control<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>net.ipv4.tcp_congestion_control = bbr<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>lsmod<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>grep bbr<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>ss -tin<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5728\u62e5\u585e\u63a7\u5236\u5b57\u6bb5\u4e2d\u67e5\u770b\u662f\u5426\u5305\u542b <code>bbr<\/code><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<blockquote>\n<p>\u8bf4\u660e\uff1a\u5982\u679c\u5728\u62e5\u585e\u63a7\u5236\u8f93\u51fa\u4e2d\u770b\u5230 <code>bbr<\/code>\uff0c\u5e76\u786e\u8ba4\u6a21\u5757\u5df2\u52a0\u8f7d\uff0c\u5c31\u610f\u5473\u7740\u670d\u52a1\u5668\u5df2\u7ecf\u5728\u4f7f\u7528 BBR \u52a0\u901f\u3002\u6b64\u65f6\u4f60\u4fbf\u53ef\u4ee5\u4eab\u53d7\u66f4\u9ad8\u7684\u7f51\u7edc\u541e\u5410\u548c\u66f4\u4f4e\u7684\u5ef6\u8fdf\u3002<\/p>\n<\/blockquote>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u4f60\u5c31\u5b8c\u6210\u4e86\u5728\u9999\u6e2f CN2 \u670d\u52a1\u5668\u4e0a\u914d\u7f6e BBR \u52a0\u901f\u3002\u53ea\u8981\u9075\u5faa\u8fd9\u4e9b\u6700\u4f73\u5b9e\u8df5\uff0c\u5c31\u80fd\u83b7\u5f97\u6301\u4e45\u800c\u53ef\u9760\u7684\u7f51\u7edc\u6027\u80fd\u3002<\/p>\n<h2>\u57fa\u51c6\u6d4b\u8bd5\u4e0e\u541e\u5410\u91cf\u4f18\u5316<\/h2>\n<h3>\u4f7f\u7528 iperf3\u3001ping\u3001curl \u6d4b\u8bd5\u6027\u80fd<\/h3>\n<p>\u4f60\u9700\u8981\u91cf\u5316 BBR \u5bf9\u670d\u52a1\u5668\u6027\u80fd\u5e26\u6765\u7684\u5f71\u54cd\u3002\u53ef\u4ee5\u4ece <code>iperf3<\/code>\u3001<code>ping<\/code> \u548c <code>curl<\/code> \u7b49\u5de5\u5177\u5165\u624b\uff0c\u5728\u542f\u7528 BBR \u524d\u540e\u5206\u522b\u6d4b\u8bd5\u7f51\u7edc\u541e\u5410\u3001\u5ef6\u8fdf\u548c\u4e22\u5305\u60c5\u51b5\u3002<\/p>\n<ul>\n<li>\n<p>\u4f7f\u7528 <code>iperf3<\/code> \u6d4b\u8bd5\u9999\u6e2f CN2 \u670d\u52a1\u5668\u4e0e\u8fdc\u7aef\u5ba2\u6237\u7aef\u4e4b\u95f4\u7684\u541e\u5410\u7387\uff1a\u5728\u670d\u52a1\u5668\u4e0a\u8fd0\u884c <code>iperf3 -s<\/code>\uff0c\u5728\u5ba2\u6237\u7aef\u8fd0\u884c <code>iperf3 -c &lt;server_ip&gt;<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528 <code>ping<\/code> \u6d4b\u91cf\u5f80\u8fd4\u65f6\u5ef6\u548c\u4e22\u5305\u7387\uff1a\u8fd0\u884c <code>ping &lt;destination_ip&gt;<\/code>\uff0c\u89c2\u5bdf\u5e73\u5747\u5ef6\u8fdf\u548c\u4e22\u5305\u60c5\u51b5\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528 <code>curl -o \/dev\/null -s -w \"%{time_total}\\n\" &lt;url&gt;<\/code> \u6d4b\u8bd5\u4e0b\u8f7d\u901f\u5ea6\u548c\u603b\u4f20\u8f93\u65f6\u95f4\u3002<\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u5efa\u8bae\u591a\u6b21\u91cd\u590d\u6d4b\u8bd5\u4ee5\u83b7\u5f97\u66f4\u7a33\u5b9a\u7684\u6570\u636e\u3002\u5c06\u542f\u7528 BBR \u4e4b\u524d\u4e0e\u542f\u7528\u540e\u5f97\u5230\u7684\u7ed3\u679c\u8fdb\u884c\u5bf9\u6bd4\uff0c\u53ef\u4ee5\u76f4\u89c2\u770b\u5230\u7f51\u7edc\u901f\u5ea6\u548c\u5ef6\u8fdf\u6539\u5584\u60c5\u51b5\u3002<\/p>\n<\/blockquote>\n<h3>\u8c03\u6574\u7f51\u7edc\u53c2\u6570\u4ee5\u83b7\u53d6\u6700\u4f73\u6548\u679c<\/h3>\n<p>\u4f60\u8fd8\u53ef\u4ee5\u901a\u8fc7\u8fdb\u4e00\u6b65\u8c03\u6574\u7f51\u7edc\u53c2\u6570\uff0c\u6765\u5728\u9ad8\u5ef6\u8fdf\u7684\u56fd\u9645\u94fe\u8def\u4e0a\u69a8\u53d6 BBR \u7684\u6700\u5927\u6027\u80fd\u6f5c\u529b\u3002\u53c2\u8003\u4e0b\u9762\u8fd9\u4e9b\u6b65\u9aa4\uff0c\u53ef\u4ee5\u5b9e\u73b0\u66f4\u9ad8\u7684\u541e\u5410\u91cf\uff1a<\/p>\n<ol>\n<li>\n<p>\u8ba1\u7b97\u5e26\u5bbd-\u65f6\u5ef6\u79ef\uff08BDP\uff09\u3002\u9996\u5148\u4f7f\u7528 <code>ping<\/code> \u6d4b\u5f97 RTT\uff0c\u7136\u540e\u4e58\u4ee5\u5e26\u5bbd\u3002\u4f8b\u5982\uff0c\u5728 100 Mbps \u94fe\u8def\u300180ms RTT \u7684\u60c5\u51b5\u4e0b\uff0cBDP \u7ea6\u4e3a 1 MB\u3002\u5efa\u8bae\u5c06\u7f13\u51b2\u533a\u5927\u5c0f\u8bbe\u7f6e\u4e3a BDP \u7684\u4e24\u500d\u53ca\u4ee5\u4e0a\uff0c\u4ee5\u9884\u7559\u7a7a\u95f4\u3002<\/p>\n<\/li>\n<li>\n<p>\u5e94\u7528\u9002\u5408\u5e7f\u57df\u7f51\u7684 TCP \u8bbe\u7f6e\u3002\u901a\u8fc7\u8c03\u6574 <code>net.core.rmem_max<\/code> \u548c <code>net.core.wmem_max<\/code> \u63d0\u9ad8 Socket \u7f13\u51b2\u533a\u4e0a\u9650\uff0c\u5e76\u901a\u8fc7 <code>net.ipv4.tcp_window_scaling = 1<\/code> \u542f\u7528\u7a97\u53e3\u6269\u5c55\u3002<\/p>\n<\/li>\n<li>\n<p>\u901a\u8fc7\u8bbe\u7f6e <code>net.ipv4.tcp_slow_start_after_idle = 0<\/code> \u5173\u95ed\u201c\u7a7a\u95f2\u540e\u6162\u542f\u52a8\u201d\uff0c\u9632\u6b62\u8fde\u63a5\u5728\u7a7a\u95f2\u4e00\u6bb5\u65f6\u95f4\u4e4b\u540e\u6027\u80fd\u9aa4\u964d\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f18\u5316 Keepalive \u914d\u7f6e\uff0c\u7528\u4e8e\u66f4\u5feb\u68c0\u6d4b\u5931\u6548\u8fde\u63a5\u3002\u53ef\u8bbe\u7f6e <code>net.ipv4.tcp_keepalive_time = 300<\/code>\u3001<code>net.ipv4.tcp_keepalive_intvl = 30<\/code> \u548c <code>net.ipv4.tcp_keepalive_probes = 10<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528 <code>tc qdisc<\/code> \u6a21\u62df\u5ef6\u8fdf\u5e76\u6d4b\u8bd5\u5e7f\u57df\u7f51\u6027\u80fd\uff0c\u7136\u540e\u901a\u8fc7 <code>iperf3<\/code> \u5bf9\u6bd4 CUBIC \u4e0e BBR \u7684\u541e\u5410\u8868\u73b0\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u5728\u4e22\u5305\u8f83\u4e3a\u660e\u663e\u7684\u5e7f\u57df\u94fe\u8def\u4e0a\uff0c\u4f60\u901a\u5e38\u4f1a\u770b\u5230 BBR \u76f8\u6bd4 CUBIC \u80fd\u5e26\u6765 2\u20135 \u500d\u7684\u541e\u5410\u63d0\u5347\uff0c\u8fd9\u662f\u56e0\u4e3a BBR \u5373\u4f7f\u5728\u5b58\u5728\u4e22\u5305\u548c\u9ad8\u5ef6\u8fdf\u7684\u73af\u5883\u4e0b\u4ecd\u80fd\u4fdd\u6301\u9ad8\u6027\u80fd\u3002\u8fd9\u4e9b\u8bbe\u7f6e\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5728\u964d\u4f4e\u4e22\u5305\u7387\u7684\u540c\u65f6\u63d0\u5347\u7f51\u7edc\u541e\u5410\uff0c\u4f7f\u670d\u52a1\u5668\u66f4\u9002\u5408\u9762\u5411\u56fd\u9645\u7528\u6237\u7684\u4e1a\u52a1\u3002<\/p>\n<blockquote>\n<p>\u6ce8\u610f\uff1a\u8c03\u5927 TCP \u7a97\u53e3\u5927\u5c0f\uff0c\u5e76\u4e3a HTTP\/2 \u7b49\u5173\u952e\u6d41\u91cf\u8bbe\u7f6e\u66f4\u9ad8\u4f18\u5148\u7ea7\uff0c\u4e5f\u6709\u52a9\u4e8e\u8fdb\u4e00\u6b65\u63d0\u5347 Web \u5e94\u7528\u7684\u6574\u4f53\u541e\u5410\u548c\u4f53\u9a8c\u3002<\/p>\n<\/blockquote>\n<h2>\u6545\u969c\u6392\u67e5\u4e0e\u81ea\u52a8\u5316<\/h2>\n<h3>Linux \u4e0a\u4f7f\u7528 BBR \u5e38\u89c1\u95ee\u9898<\/h3>\n<p>\u5728\u542f\u7528 BBR \u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f60\u53ef\u80fd\u4f1a\u9047\u5230\u4e00\u4e9b\u5e38\u89c1\u95ee\u9898\u3002\u63d0\u524d\u4e86\u89e3\u8fd9\u4e9b\u95ee\u9898\u53ca\u5176\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5feb\u901f\u6062\u590d\u5e76\u7ef4\u6301\u6700\u4f73\u6027\u80fd\u3002\u4e0b\u9762\u662f\u6700\u5e38\u89c1\u7684\u51e0\u7c7b\u95ee\u9898\u53ca\u5bf9\u5e94\u89e3\u51b3\u601d\u8def\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u961f\u5217\u8c03\u5ea6\u5668\uff08qdisc\uff09\u8bbe\u7f6e\u9519\u8bef<\/strong><br \/>\u4f60\u5fc5\u987b\u5c06\u961f\u5217\u8c03\u5ea6\u5668\u8bbe\u7f6e\u4e3a <code>fq<\/code>\uff0cBBR \u624d\u80fd\u5b8c\u5168\u53d1\u6325\u4f5c\u7528\u3002\u5982\u679c\u4f7f\u7528\u4e86\u5176\u4ed6\u8c03\u5ea6\u6a21\u5f0f\uff0cBBR \u7684\u541e\u5410\u63d0\u5347\u53ef\u80fd\u4f1a\u5927\u6253\u6298\u6263\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u8bbe\u7f6e\u9ed8\u8ba4\u961f\u5217\u8c03\u5ea6\u5668\uff1a<\/p>\n<pre><code>sudo sysctl -w net.core.default_qdisc=fq\r\n<\/code><\/pre>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u6bcf\u6b21\u4fee\u6539\u5b8c\u8bbe\u7f6e\u540e\u90fd\u5efa\u8bae\u68c0\u67e5\u5f53\u524d\u961f\u5217\u8c03\u5ea6\u5668\uff0c\u53ef\u4f7f\u7528 <code>sysctl net.core.default_qdisc<\/code> \u6838\u5b9e\u3002<\/p>\n<\/blockquote>\n<\/li>\n<li>\n<p><strong>\u7f13\u51b2\u533a\u4e0a\u9650\u8fc7\u4f4e<\/strong><br \/>\u5982\u679c\u4f60\u5e0c\u671b\u83b7\u5f97\u66f4\u9ad8\u7684\u541e\u5410\u91cf\uff0c\u5c31\u9700\u8981\u589e\u5927 TCP \u7f13\u51b2\u533a\u4e0a\u9650\u3002\u7f13\u51b2\u533a\u8fc7\u5c0f\u4f1a\u9650\u5236 BBR \u5bf9\u6570\u636e\u6d41\u8fdb\u884c\u4f18\u5316\u7684\u80fd\u529b\u3002\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b sysctl \u547d\u4ee4\u8c03\u6574\u7f13\u51b2\u533a\u5927\u5c0f\uff1a<\/p>\n<pre><code>sudo sysctl -w net.core.rmem_max=16777216\r\nsudo sysctl -w net.core.wmem_max=16777216\r\n<\/code><\/pre>\n<blockquote>\n<p>\u8bf4\u660e\uff1a\u66f4\u5927\u7684\u7f13\u51b2\u533a\u6709\u52a9\u4e8e BBR \u5904\u7406\u66f4\u591a\u6570\u636e\uff0c\u4ece\u800c\u964d\u4f4e\u4e22\u5305\u7387\u3002<\/p>\n<\/blockquote>\n<\/li>\n<li>\n<p><strong>\u7f51\u7edc\u74f6\u9888\u5b58\u5728\u4e8e\u5176\u4ed6\u94fe\u8def\u6216\u786c\u4ef6<\/strong><br \/>\u4f60\u8fd8\u9700\u8981\u68c0\u67e5\u7269\u7406\u7f51\u7edc\u662f\u5426\u5b58\u5728\u74f6\u9888\u3002BBR \u4e3b\u8981\u4f18\u5316 TCP \u5c42\u9762\u7684\u4f20\u8f93\uff0c\u5e76\u4e0d\u80fd\u4fee\u590d\u786c\u4ef6\u6216\u57fa\u7840\u8bbe\u65bd\u4e0a\u7684\u9650\u5236\u3002\u8bf7\u68c0\u67e5\u7f51\u7ebf\u3001\u4ea4\u6362\u673a\u4ee5\u53ca\u4e0a\u6e38\u5e26\u5bbd\uff0c\u786e\u4fdd\u4e0d\u4f1a\u5bf9\u670d\u52a1\u5668\u7684\u6d41\u91cf\u5f62\u6210\u786c\u6027\u963b\u585e\u3002<\/p>\n<\/li>\n<\/ol>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n          <\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u95ee\u9898<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u961f\u5217\u8c03\u5ea6\u5668\u8bbe\u7f6e\u9519\u8bef<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4f7f\u7528 sysctl \u5c06\u9ed8\u8ba4 qdisc \u8bbe\u7f6e\u4e3a <code>fq<\/code><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7f13\u51b2\u533a\u4e0a\u9650\u8fc7\u4f4e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u589e\u5927 TCP \u7f13\u51b2\u533a\u4e0a\u9650<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5176\u4ed6\u94fe\u8def\u6216\u786c\u4ef6\u51fa\u73b0\u74f6\u9888<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u68c0\u67e5\u7269\u7406\u7f51\u7edc\u548c\u57fa\u7840\u8bbe\u65bd<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h3>\u81ea\u52a8\u5316 BBR \u914d\u7f6e<\/h3>\n<p>\u4f60\u53ef\u4ee5\u901a\u8fc7\u81ea\u52a8\u5316\u811a\u672c\u7684\u65b9\u5f0f\u914d\u7f6e BBR\uff0c\u4ece\u800c\u8282\u7701\u65f6\u95f4\u5e76\u964d\u4f4e\u4eba\u4e3a\u914d\u7f6e\u9519\u8bef\u7684\u98ce\u9669\u3002\u81ea\u52a8\u5316\u8fd8\u80fd\u4fdd\u8bc1\u5728\u7cfb\u7edf\u91cd\u542f\u6216\u66f4\u65b0\u4e4b\u540e\uff0c\u76f8\u5173\u8bbe\u7f6e\u4f9d\u7136\u4fdd\u6301\u4e00\u81f4\u3002\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u811a\u672c\uff0c\u5c06\u6240\u6709\u5fc5\u9700\u7684 sysctl \u53c2\u6570\u548c\u6a21\u5757\u52a0\u8f7d\u6b65\u9aa4\u7edf\u4e00\u6267\u884c\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684 Bash \u793a\u4f8b\u811a\u672c\uff1a<\/p>\n<pre><code>#!\/bin\/bash\r\nsudo sysctl -w net.core.default_qdisc=fq\r\nsudo sysctl -w net.ipv4.tcp_congestion_control=bbr\r\nsudo sysctl -w net.core.rmem_max=16777216\r\nsudo sysctl -w net.core.wmem_max=16777216\r\nsudo modprobe tcp_bbr\r\n<\/code><\/pre>\n<blockquote>\n<p>\u6ce8\u610f\uff1a\u4f60\u53ef\u4ee5\u5c06\u6b64\u811a\u672c\u653e\u5728 <code>\/usr\/local\/bin\/<\/code>\uff0c\u5e76\u901a\u8fc7 <code>cron<\/code> \u5b9a\u65f6\u6267\u884c\uff0c\u6216\u76f4\u63a5\u5c06\u76f8\u5173\u8bbe\u7f6e\u5199\u5165 <code>\/etc\/sysctl.d\/99-bbr.conf<\/code> \u4ee5\u5b9e\u73b0\u6301\u4e45\u5316\u914d\u7f6e\u3002<\/p>\n<\/blockquote>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528 Ansible \u6216 Puppet \u7b49\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\uff0c\u5728\u591a\u53f0\u670d\u52a1\u5668\u4e0a\u96c6\u4e2d\u4e0b\u53d1 BBR \u8bbe\u7f6e\u3002\u81ea\u52a8\u5316\u4e0d\u4ec5\u80fd\u591f\u4fdd\u6301\u7f51\u7edc\u914d\u7f6e\u7684\u4e00\u81f4\u6027\uff0c\u8fd8\u80fd\u663e\u8457\u51cf\u5c11\u624b\u5de5\u7ef4\u62a4\u5de5\u4f5c\u91cf\u3002<\/p>\n<div dividerstyle=\"solid\" size=\"large\" color=\"#D1D1D1\" class=\"qc-divider-wrapper\">\n<div class=\"qc-divider\" style=\"border-top-style: solid; width: 100%; border-top-color: rgb(209, 209, 209);\"><\/div><\/div>\n<p>\u5f53\u4f60\u5728\u9999\u6e2f CN2 \u670d\u52a1\u5668\u4e0a\u542f\u7528 BBR \u52a0\u901f\u540e\uff0c\u5c06\u4f1a\u83b7\u5f97\u66f4\u5feb\u3001\u66f4\u53ef\u9760\u7684\u7f51\u7edc\u8868\u73b0\u3002\u4e3a\u4e86\u6301\u7eed\u4fdd\u6301\u6700\u4f73\u72b6\u6001\uff0c\u5efa\u8bae\u4f60\u9075\u5faa\u4ee5\u4e0b\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li>\n<p>\u9002\u5f53\u589e\u5927\u7f51\u7edc\u7f13\u51b2\u533a\uff0c\u5e76\u542f\u7528 TCP \u7a97\u53e3\u6269\u5c55\u529f\u80fd\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528 <code>sudo sysctl -p<\/code> \u6216 <code>sudo sysctl --system<\/code> \u8ba9\u8bbe\u7f6e\u5373\u65f6\u751f\u6548\u3002<\/p>\n<\/li>\n<li>\n<p>\u7528\u771f\u5b9e\u4e1a\u52a1\u6d41\u91cf\u548c\u6d4b\u8bd5\u5de5\u5177\u5bf9 BBR \u6548\u679c\u8fdb\u884c\u9a8c\u8bc1\u548c\u76d1\u63a7\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b9a\u671f\u66f4\u65b0 Linux \u7cfb\u7edf\u548c\u5185\u6838\uff0c\u4ee5\u4fdd\u6301\u517c\u5bb9\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u53ea\u8981\u6301\u7eed\u76d1\u63a7\u7f51\u7edc\u8868\u73b0\u5e76\u53ca\u65f6\u6392\u67e5\u95ee\u9898\uff0c\u4f60\u5c31\u80fd\u957f\u671f\u4fdd\u6301 BBR \u5e26\u6765\u7684\u6027\u80fd\u4f18\u52bf\u3002<\/p>\n<h2>\u5e38\u89c1\u95ee\u9898\uff08FAQ\uff09<\/h2>\n<h3>\u662f\u5426\u53ef\u4ee5\u5728\u4efb\u610f Linux \u53d1\u884c\u7248\u4e0a\u542f\u7528 BBR\uff1f<\/h3>\n<p>\u53ea\u8981\u5185\u6838\u7248\u672c\u4e0d\u4f4e\u4e8e 4.9\uff0c\u4f60\u5c31\u53ef\u4ee5\u5728\u5927\u591a\u6570\u73b0\u4ee3 Linux \u53d1\u884c\u7248\u4e0a\u542f\u7528 BBR\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7 <code>uname -r<\/code> \u68c0\u67e5\u517c\u5bb9\u6027\uff0c\u5982\u6709\u9700\u8981\u5219\u5148\u5347\u7ea7\u5185\u6838\u3002<\/p>\n<h3>BBR \u662f\u5426\u80fd\u63d0\u5347\u6240\u6709\u7c7b\u578b\u7f51\u7edc\u7684\u6027\u80fd\uff1f<\/h3>\n<p>BBR \u5728\u9ad8\u65f6\u5ef6\u3001\u9ad8\u5e26\u5bbd\u94fe\u8def\u4e0a\u6548\u679c\u6700\u4e3a\u663e\u8457\uff1b\u5728\u672c\u5730\u3001\u4f4e\u5ef6\u8fdf\u7f51\u7edc\u4e2d\uff0c\u6027\u80fd\u63d0\u5347\u53ef\u80fd\u5e76\u4e0d\u5341\u5206\u660e\u663e\u3002<\/p>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u5efa\u8bae\u5728\u542f\u7528 BBR \u524d\u540e\u5206\u522b\u6d4b\u8bd5\u7f51\u7edc\uff0c\u4ee5\u5b9a\u91cf\u8bc4\u4f30\u6027\u80fd\u5dee\u5f02\u3002<\/p>\n<\/blockquote>\n<h3>\u5982\u4f55\u68c0\u67e5 BBR \u662f\u5426\u5df2\u7ecf\u542f\u7528\uff1f<\/h3>\n<p>\u4f60\u53ef\u4ee5\u8fd0\u884c\u5982\u4e0b\u547d\u4ee4\u8fdb\u884c\u9a8c\u8bc1\uff1a<\/p>\n<pre><code>sysctl net.ipv4.tcp_congestion_control\r\n<\/code><\/pre>\n<p>\u5982\u679c\u8f93\u51fa\u4e2d\u663e\u793a <code>bbr<\/code>\uff0c\u5219\u8bf4\u660e BBR \u5df2\u6210\u529f\u542f\u7528\u3002<\/p>\n<h3>BBR \u8bbe\u7f6e\u662f\u5426\u4f1a\u5728\u91cd\u542f\u540e\u4fdd\u6301\u6709\u6548\uff1f<\/h3>\n<p>\u5982\u679c\u4f60\u5df2\u5c06 BBR \u76f8\u5173\u8bbe\u7f6e\u5199\u5165 <code>\/etc\/sysctl.d\/99-bbr.conf<\/code>\uff0c\u90a3\u4e48\u8fd9\u4e9b\u914d\u7f6e\u4f1a\u5728\u6bcf\u6b21\u7cfb\u7edf\u542f\u52a8\u540e\u81ea\u52a8\u52a0\u8f7d\u5e76\u751f\u6548\u3002<\/p>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n          <\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8bbe\u7f6e\u9879<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u914d\u7f6e\u6587\u4ef6\u4f4d\u7f6e<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>BBR \u914d\u7f6e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>\/etc\/sysctl.d\/99-bbr.conf<\/code><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h3>\u662f\u5426\u53ef\u4ee5\u5728\u591a\u53f0\u670d\u52a1\u5668\u4e0a\u81ea\u52a8\u5316\u90e8\u7f72 BBR\uff1f<\/h3>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528\u811a\u672c\u6216 Ansible \u7b49\u5de5\u5177\u5728\u591a\u53f0\u670d\u52a1\u5668\u4e0a\u81ea\u52a8\u5316\u90e8\u7f72 BBR \u914d\u7f6e\uff0c\u8fd9\u6837\u53ef\u4ee5\u8282\u7701\u5927\u91cf\u65f6\u95f4\u5e76\u786e\u4fdd\u914d\u7f6e\u4e00\u81f4\u3002<\/p>\n<blockquote>\n<p>\u6ce8\u610f\uff1a\u81ea\u52a8\u5316\u90e8\u7f72\u4e0d\u4ec5\u80fd\u51cf\u5c11\u624b\u52a8\u64cd\u4f5c\u5931\u8bef\uff0c\u8fd8\u80fd\u663e\u8457\u52a0\u5feb\u4e0a\u7ebf\u548c\u6269\u5bb9\u901f\u5ea6\u3002<\/p>\n<\/blockquote><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u4f60\u60f3\u63d0\u5347\u9999\u6e2f CN2 \u670d\u52a1\u5668\u7684\u7f51\u7edc\u541e\u5410\u91cf\uff0cBBR \u52a0\u901f\u662f\u4e00\u79cd\u73b0\u4ee3\u5316\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u83b7\u5f97\u66f4\u9ad8\u901f\u5ea6\u548c\u66f4\u4f4e\u5ef6\u8fdf\u3002\u5728 Linux \u670d\u52a1\u5668\u4e0a\uff0cBBR \u62e5\u585e\u63a7\u5236\u4f9d\u9760\u5e26\u5bbd\u548c\u5ef6\u8fdf\u4f30\u7b97\uff0c\u800c\u4e0d\u662f\u4e22\u5305\u4fe1\u53f7\uff0c\u8fd9\u5bf9\u5927\u5e26\u5bbd-\u65f6\u5ef6\u79ef\u94fe\u8def\u5c24\u4e3a\u6709\u5229\u3002\u8bb8\u591a\u4e9a\u592a\u673a\u623f\u7684\u7528\u6237\u62a5\u544a\u4e86\u4ee5\u4e0b\u597d\u5904\uff1a \u4e0e Cubic \u7b49\u4f20\u7edf\u7b97\u6cd5\u76f8\u6bd4\uff0c\u6709\u660e\u663e\u7684\u6709\u6548\u541e\u5410\uff08goodput\uff09\u63d0\u5347 \u5728\u9ad8\u5ef6\u8fdf\u548c\u9ad8\u5e26\u5bbd\u573a\u666f\u4e0b\uff0c\u6709\u65f6\u53ef\u63d0\u5347\u9ad8\u8fbe 115% \u7684\u6709\u6548\u541e\u5410 \u5728\u9ad8\u8d1f\u8f7d\u573a\u666f\u4e0b\u4ecd\u80fd\u4fdd\u6301\u7a33\u5b9a\u8868\u73b0 \u53ea\u8981\u5728\u914d\u7f6e\u8fc7\u7a0b\u4e2d\u9075\u5faa\u6700\u4f73\u5b9e\u8df5\uff0c\u4f60\u5c31\u80fd\u83b7\u5f97\u5e73\u6ed1\u4e14\u6301\u4e45\u7684\u52a0\u901f\u6548\u679c\u3002 \u5173\u952e\u8981\u70b9 BBR \u52a0\u901f\u901a\u8fc7\u4f30\u7b97\u5e26\u5bbd\u548c\u5f80\u8fd4\u65f6\u5ef6\uff08RTT\uff09\uff0c\u800c\u4e0d\u662f\u4f9d\u8d56\u4e22\u5305\u4fe1\u53f7\uff0c\u4ece\u800c\u63d0\u5347\u7f51\u7edc\u541e\u5410\u5e76\u964d\u4f4e\u5ef6\u8fdf\u3002 \u542f\u7528 BBR \u524d\u9700\u786e\u4fdd Linux \u5185\u6838\u7248\u672c\u4e0d\u4f4e\u4e8e 4.9\u3002\u5982\u6709\u9700\u8981\uff0c\u53ef\u5728 CentOS \u4e2d\u4f7f\u7528 ELRepo \u7b49\u5de5\u5177\u8fdb\u884c\u5185\u6838\u5347\u7ea7\u3002 \u901a\u8fc7 sysctl \u547d\u4ee4\u5c06\u9ed8\u8ba4\u961f\u5217\u7b97\u6cd5\u8bbe\u7f6e\u4e3a \u201cfq\u201d\uff0c\u5e76\u5c06 TCP \u62e5\u585e\u63a7\u5236\u8bbe\u7f6e\u4e3a \u201cbbr\u201d\uff0c\u53ef\u83b7\u5f97\u66f4\u4f73\u6027\u80fd\u3002 \u5c06 BBR \u76f8\u5173\u914d\u7f6e\u4fdd\u5b58\u5230 \/etc\/sysctl.d\/99-bbr.conf \u4e2d\uff0c\u5e76\u786e\u4fdd BBR \u6a21\u5757\u5f00\u673a\u81ea\u52a8\u52a0\u8f7d\uff0c\u4ee5\u5b9e\u73b0\u6301\u4e45\u751f\u6548\u3002 \u5728\u542f\u7528 BBR \u524d\u540e\u4f7f\u7528 iperf3 \u548c ping \u7b49\u5de5\u5177\u6d4b\u8bd5\u7f51\u7edc\u6027\u80fd\uff0c\u4ee5\u5bf9\u6bd4\u541e\u5410\u548c\u5ef6\u8fdf\u7684\u6539\u8fdb\u60c5\u51b5\u3002 BBR \u62e5\u585e\u63a7\u5236\u6982\u89c8 \u4ec0\u4e48\u662f BBR \u62e5\u585e\u63a7\u5236 \u4f60\u53ef\u4ee5\u4f7f\u7528 [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-cn\/knowledge\/configure-bbr-to-improve-the-throughput-of-hk-cn2-servers\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":11,"featured_media":33407,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[80],"tags":[],"class_list":["post-33410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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property=\"og:url\" content=\"https:\/\/www.varidata.com\/zh-cn\/knowledge\/configure-bbr-to-improve-the-throughput-of-hk-cn2-servers\/\" \/>\n<meta property=\"og:site_name\" content=\"Varidata Limited\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-16T09:02:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-16T09:06:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.varidata.com\/wp-content\/uploads\/2026\/06\/\u5c4f\u5e55\u622a\u56fe-2026-06-16-164653.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"683\" \/>\n\t<meta property=\"og:image:height\" content=\"372\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<script type=\"application\/ld+json\" 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