https://567899.xyz/tags/bbr/ Recent content in Bbr on Xizi's Blog https://567899.xyz/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E https://567899.xyz/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E Hugo zh Thu, 21 Dec 2017 01:37:56 +0800 https://567899.xyz/post/debian-ubuntu-kernel-update-bbr/ Thu, 21 Dec 2017 01:37:56 +0800 https://567899.xyz/post/debian-ubuntu-kernel-update-bbr/ <p>查看内核版本</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">uname -r </span></span></code></pre></div><p>BBR要求内核为kernel4.9以上版本。</p> <p>如果大于或等于4.9的可以直接开启BBR,开启步骤如下</p> <p>配置文件</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl"><span class="nb">echo</span> <span class="s2">&#34;net.core.default_qdisc=fq&#34;</span> &gt;&gt; /etc/sysctl.conf </span></span><span class="line"><span class="cl"><span class="nb">echo</span> <span class="s2">&#34;net.ipv4.tcp_congestion_control=bbr&#34;</span> &gt;&gt; /etc/sysctl.conf </span></span></code></pre></div><p>加载配置到内核参数中</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">sysctl -p </span></span><span class="line"><span class="cl">sysctl net.ipv4.tcp_available_congestion_control </span></span></code></pre></div><p>顺利的话下面的命令就能看到bbr模块了</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">lsmod <span class="p">|</span> grep bbr </span></span></code></pre></div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">sysctl net.ipv4.tcp_available_congestion_control </span></span></code></pre></div><p>返回值一般为：</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">net.ipv4.tcp_available_congestion_control <span class="o">=</span> bbr cubic reno </span></span></code></pre></div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">sysctl net.ipv4.tcp_congestion_control </span></span></code></pre></div><p>返回值一般为：</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">net.ipv4.tcp_congestion_control <span class="o">=</span> bbr </span></span></code></pre></div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">sysctl net.core.default_qdisc </span></span></code></pre></div><p>返回值一般为：</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">net.core.default_qdisc <span class="o">=</span> fq </span></span></code></pre></div><p>如果内核版本低于4.9的需要手动升级到4.9或以上才能开启</p> <p>去这里<a href="https://kernel.ubuntu.com/~kernel-ppa/mainline/">下载最新版的内核 deb 安装包</a></p> <ol> <li>如果系统是 64 位，则下载 amd64 的 linux-image 中含有 generic 这个 deb 包；</li> <li>如果系统是 32 位，则下载 i386 的 linux-image 中含有 generic 这个 deb 包；</li> </ol> <p>安装的命令如下（以最新版的 64 位 4.12.4 举例而已，请替换为下载好的 deb 包）：</p> https://567899.xyz/post/linux-tcp-bbr-lotserver/ Wed, 23 Aug 2017 01:37:56 +0800 https://567899.xyz/post/linux-tcp-bbr-lotserver/ <p>整出了一个集合BBR、BBR魔改、BBR plus、锐速四合一的脚本 本脚本支持KVM架构的VPS，不支持OpenVZ。</p> <blockquote> <p>项目地址：(<a href="https://github.com/cx9208/Linux-NetSpeed">https://github.com/cx9208/Linux-NetSpeed</a>)</p> </blockquote> <h1 id="安装">安装</h1> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">wget https://github.com/ojbk8/Linux-NetSpeed/raw/master/tcp.sh </span></span><span class="line"><span class="cl">chmod +x tcp.sh </span></span><span class="line"><span class="cl">./tcp.sh </span></span></code></pre></div><p>先换成对应加速 出现弹窗按<code>TAB键</code>切换选择<code>No</code>回车删除原内核</p> <p><img loading="lazy" src="https://567899.xyz/images/tcp-bbrplus-lotserver.png"></p> <p>重启后</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">./tcp.sh </span></span></code></pre></div><p>开启加速</p>