{"id":23137,"date":"2026-02-14T00:19:32","date_gmt":"2026-02-13T16:19:32","guid":{"rendered":"https:\/\/blog.iyatt.com\/?p=23137"},"modified":"2026-02-15T08:57:20","modified_gmt":"2026-02-15T00:57:20","slug":"linux-%e5%88%87%e6%8d%a2%e9%bb%98%e8%ae%a4-tcp-%e6%8b%a5%e5%a0%b5%e7%ae%97%e6%b3%95%e4%b8%ba-bbr","status":"publish","type":"post","link":"https:\/\/blog.iyatt.com\/?p=23137","title":{"rendered":"Linux \u5207\u6362\u9ed8\u8ba4 TCP \u62e5\u5835\u7b97\u6cd5\u4e3a BBR"},"content":{"rendered":"<p>Linux \u9ed8\u8ba4\u7684 TCP \u62e5\u5835\u7b97\u6cd5\u662f CUBIC\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u6ca1\u5565\u95ee\u9898\u3002\u53ea\u662f\u5bf9\u4e8e\u4ee3\u7406\u8282\u70b9\u670d\u52a1\u5668\uff0c\u5728\u8ddd\u79bb\u8fdc\u3001\u9ad8\u4e22\u5305\u3001\u9ad8\u5ef6\u8fdf\u7684\u573a\u666f\u4e0b\uff08\u5728\u5927\u9646\u8bbf\u95ee\u6d77\u5916\u670d\u52a1\u5668\u7684\u573a\u666f\uff09\uff0c\u4f7f\u7528 BBR \u662f\u66f4\u4f18\u7684\u3002\u7279\u522b\u662f\u665a\u9ad8\u5cf0\u964d\u901f\u4e25\u91cd\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528 BBR \u6548\u679c\u5341\u5206\u660e\u663e\u3002<br \/>\n\u6211\u6709\u4e00\u4e2a\u65b0\u52a0\u5761\u7684 VPS \u548c\u9999\u6e2f\u7684 VPS \uff0c\u90fd\u662f 200MBps \u5e26\u5bbd\u7684\uff0c\u867d\u7136\u53d7\u5bb6\u91cc\u5bbd\u5e26\u9650\u5236\uff0c\u4f46\u767d\u5929\u8fd8\u662f\u53ef\u4ee5\u8fbe\u5230 10MB\/s \uff08\u7ea680MBps\uff09\u7684\uff0c\u4f46\u662f\u665a\u4e0a\u901f\u5ea6\u4e0d\u6ee1 200KB\/s\uff0c\u751a\u81f3\u51e0\u5341 KB\/s \u662f\u5e38\u6001\u3002\u5728\u5207\u6362 TCP \u62e5\u5835\u7b97\u6cd5\u4e3a BBR \u540e\uff0c\u665a\u4e0a\u7684\u901f\u5ea6\u4e5f\u6709\u516d\u4e03 MB\/s\uff0c\u53ef\u4ee5\u8bf4\u6548\u679c\u5f88\u660e\u663e\u3002<br \/>\n\u6211\u8fd8\u6709\u4e00\u4e2a\u65b0\u52a0\u5761\u7684\u670d\u52a1\u5668\uff0c\u90e8\u7f72\u7684\u672c\u535a\u5ba2\uff0c\u540c\u65f6\u8fd8\u90e8\u7f72\u4e86\u5bb6\u5ead\u76d1\u63a7\u548c\u7f51\u76d8\uff0c\u5230\u665a\u4e0a\u7684\u65f6\u5019\u4e5f\u662f\u964d\u901f\u660e\u663e\uff0c\u76ee\u524d\u8fd8\u5728\u9a8c\u8bc1\u4fee\u6539\u540e\u7684\u6548\u679c\u3002<\/p>\n<p>\u6d4b\u8bd5\u7cfb\u7edf\uff1aDebian 12<br \/>\n\u5185\u6838\u7248\u672c\uff1a6.1.0<\/p>\n<p>\u67e5\u770b BBR \u6a21\u5757\u542f\u7528\u72b6\u6001<br \/>\n\u6267\u884c\u540e\u4ec0\u4e48\u90fd\u6ca1\u663e\u793a\u5c31\u662f\u6ca1\u542f\u7528\uff0c\u9ed8\u8ba4\u72b6\u6001\u5e94\u8be5\u5c31\u6ca1\u542f\u7528<\/p>\n<pre><code class=\"language-bash\">lsmod | grep bbr<\/code><\/pre>\n<p>\u542f\u7528 BBR \u6a21\u5757<\/p>\n<pre><code class=\"language-bash\">sudo modprobe tcp_bbr<\/code><\/pre>\n<p>\u5728\u67e5\u770b\u5c31\u53ef\u4ee5\u770b\u5230 BBR \u4e86<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2026\/02\/image-1770998846015.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 382px; --smush-placeholder-aspect-ratio: 382\/52;\" \/><\/p>\n<p>\u5207\u6362\u53ef\u4ee5\u4e34\u65f6\uff0c\u4e5f\u53ef\u4ee5\u6c38\u4e45\uff0c\u4e34\u65f6\u5207\u6362\u5728\u91cd\u542f\u7cfb\u7edf\u540e\u4f1a\u6062\u590d\u3002\u5728\u4fee\u6539 TCP \u62e5\u5835\u7b97\u6cd5\u7684\u540c\u65f6\uff0c\u5efa\u8bae\u628a\u961f\u5217\u8c03\u5ea6\u5668\u4e5f\u6539\u4e3a fq_codel\u3002<\/p>\n<p>\u4e34\u65f6\u5207\u6362\u53ef\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo sysctl -w net.core.default_qdisc=fq_codel\nsudo sysctl -w net.ipv4.tcp_congestion_control=bbr<\/code><\/pre>\n<p>\u6c38\u4e45\u5207\u6362<br \/>\n\u4ee5 root \u6743\u9650\u7f16\u8f91 <strong>\/etc\/sysctl.conf<\/strong> \u6587\u4ef6\uff0c\u9ed8\u8ba4\u589e\u52a0\u4e0a<\/p>\n<pre><code class=\"language-bash\">net.core.default_qdisc=fq_codel\nnet.ipv4.tcp_congestion_control=bbr<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2026\/02\/image-1771116333152.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 541px; --smush-placeholder-aspect-ratio: 541\/363;\" \/><\/p>\n<p>\u7136\u540e\u8ba9\u914d\u7f6e\u6587\u4ef6\u751f\u6548<\/p>\n<pre><code class=\"language-bash\">sudo sysctl -p<\/code><\/pre>\n<p>\u67e5\u770b\u5f53\u524d TCP \u62e5\u5835\u7b97\u6cd5\uff1a<\/p>\n<pre><code class=\"language-bash\">sysctl net.ipv4.tcp_congestion_control\nsysctl net.core.default_qdisc<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2026\/02\/image-1771116393675.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 454px; --smush-placeholder-aspect-ratio: 454\/86;\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u9ed8\u8ba4\u7684 TCP \u62e5\u5835\u7b97\u6cd5\u662f CUBIC\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u6ca1\u5565\u95ee\u9898\u3002\u53ea\u662f\u5bf9\u4e8e\u4ee3\u7406\u8282\u70b9\u670d\u52a1\u5668\uff0c\u5728\u8ddd\u79bb\u8fdc\u3001\u9ad8\u4e22 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"zakra_page_container_layout":"customizer","zakra_page_sidebar_layout":"customizer","zakra_remove_content_margin":false,"zakra_sidebar":"customizer","zakra_transparent_header":"customizer","zakra_logo":0,"zakra_main_header_style":"default","zakra_menu_item_color":"","zakra_menu_item_hover_color":null,"zakra_menu_item_active_color":null,"zakra_menu_active_style":"","zakra_page_header":true,"_lmt_disableupdate":"no","_lmt_disable":"no","footnotes":""},"categories":[1,598,595],"tags":[1951,1954,1950,1952,1953],"class_list":["post-23137","post","type-post","status-publish","format-standard","hentry","category-all","category-linux","category-595","tag-bbr","tag-cubic","tag-linux","tag-tcp","tag-1953"],"modified_by":"IYATT-yx","_links":{"self":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/23137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=23137"}],"version-history":[{"count":8,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/23137\/revisions"}],"predecessor-version":[{"id":23152,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/23137\/revisions\/23152"}],"wp:attachment":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=23137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=23137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=23137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}