# BBR3 本篇內容文件採用 [xanmod](https://xanmod.org/),如果你還不知道它是什麼 請閱讀它們的官網,\ 簡而言之,如果你追求新特性,更強的針對CPU架構特殊優化的內核,那麼xanmod是你一定不可錯過的內核項目之一。 1, 下載內核 ``` wget "https://sourceforge.net/projects/xanmod/files/releases/main/7.0.9-xanmod1/7.0.9-x64v2-xanmod1/linux-image-7.0.9-x64v2-xanmod1_7.0.9-x64v2-xanmod1-0~20260517.ga456799_amd64.deb" ``` 2,下載內核頭 ``` wget "https://sourceforge.net/projects/xanmod/files/releases/main/7.0.9-xanmod1/7.0.9-x64v2-xanmod1/linux-headers-7.0.9-x64v2-xanmod1_7.0.9-x64v2-xanmod1-0~20260517.ga456799_amd64.deb" ``` 3.安裝內核 ``` dpkg -i linux-image-7.0.9-x64v2-xanmod1_*.deb linux-headers-7.0.9-x64v2-xanmod1_*.deb ``` 4.更新grub引導 ``` update-grub ``` 5. 重啟後： ``` reboot ``` 確認內核 ``` uname -r ​ #7.0.9-x64v2-xanmod1 ``` 啟用 BBR ``` echo "net.core.default_qdisc=fq" > /etc/sysctl.d/99-bbr.conf ​ echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.d/99-bbr.conf ​ sysctl -p /etc/sysctl.d/99-bbr.conf ``` 驗證 ``` sysctl net.ipv4.tcp_congestion_control ``` 結果 ``` root@debian ~ # sysctl -p /etc/sysctl.d/99-bbr.conf net.core.default_qdisc = fq net.ipv4.tcp_congestion_control = bbr root@debian ~ # sysctl net.ipv4.tcp_congestion_control net.ipv4.tcp_congestion_control = bbr root@debian ~ #  ``` 水一篇博文,BBR2 VS BBR3 測試的話看心情發. {% embed url="" %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://blog.jsmsr.com/blog/bbr3.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.