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0e6gd2jc-2.html
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<h1 class="article-title"><a href="0e6gd2jc-2.html">比锐速还强的 TCP拥塞控制技术 —— TCP-BBR 测试及开启教程</a></h1>
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<ul id="content-index-contents" style="display: none;"><li class="content-index-level-1"><a href="0e6gd2jc-2.html#启动步骤" title="启动步骤"><span>启动步骤</span></a></li><li class="content-index-level-1"><a href="0e6gd2jc-2.html#其他说明" title="其他说明"><span>其他说明</span></a></li><li class="content-index-level-1"><a href="0e6gd2jc-2.html#裸SS 与 锐速+SS 与 BBR+SS 速度对比" title="裸SS 与 锐速+SS 与 BBR+SS 速度对比"><span>裸SS 与 锐速+SS 与 BBR+SS 速度对比</span></a></li><li class="content-index-level-1"><a class="hide" onclick="return false;" href="0e6gd2jc-2.html#" title=""><span></span></a><ul class="children"><li class="content-index-level-2"><a href="0e6gd2jc-2.html#BBR 简单介绍" title="BBR 简单介绍"><span>BBR 简单介绍</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#下载内核文件（64位系统）" title="下载内核文件（64位系统）"><span>下载内核文件（64位系统）</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#下载内核文件（32位系统）" title="下载内核文件（32位系统）"><span>下载内核文件（32位系统）</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#安装内核（64位）" title="安装内核（64位）"><span>安装内核（64位）</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#安装内核（32位）" title="安装内核（32位）"><span>安装内核（32位）</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#列出并删除旧内核" title="列出并删除旧内核"><span>列出并删除旧内核</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#开启bbr" title="开启bbr"><span>开启bbr</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#更新 grub 系统引导文件并重启VPS" title="更新 grub 系统引导文件并重启VPS"><span>更新 grub 系统引导文件并重启VPS</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#查看bbr是否开启" title="查看bbr是否开启"><span>查看bbr是否开启</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#关闭bbr" title="关闭bbr"><span>关闭bbr</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#升级BBR" title="升级BBR"><span>升级BBR</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#卸载BBR" title="卸载BBR"><span>卸载BBR</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#裸 SS" title="裸 SS"><span>裸 SS</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#锐速+SS" title="锐速+SS"><span>锐速+SS</span></a></li><li class="content-index-level-2"><a href="0e6gd2jc-2.html#BBR+SS" title="BBR+SS"><span>BBR+SS</span></a></li></ul></li></ul></div>
<div class="old-message">本文最后更新于 <a><strong>2018年7月19日 12:14</strong></a> 可能会因为没有更新而失效。如已失效或需要修正，请留言！</div><p>这几天BBR很火的样子，我就半夜测试一下。BBR和锐速都属于TCP拥塞控制技术，虽然这类技术互联网上面不少，不过我都不是很了解。</p>
<p>本文章仅为我个人的测试，各地区测试情况不一样，而且BBR还处于开发初期并且开源，而锐速则已经停止开发了。</p>
<hr />
<p><strong>一键脚本安装：<a title="『原创』Debian/Ubuntu系统 TCP拥塞控制技术 ——TCP-BBR 一键安装脚本" href="3--didfb-2.html" target="_blank" rel="noopener">『原创』Debian/Ubuntu系统 TCP拥塞控制技术 ——TCP-BBR 一键安装脚本</a></strong></p>
<p><span style="color: #ff6464; font-size: 22px;"><strong>注意：TCP-BBR和锐速一样，不支持Openvz，查看本教程之前，请先确定你的VPS的虚拟化技术！</strong></span></p>
<pre><span style="color: #339966;"><strong>注意：本教程涉及到VPS更换内核，所以如果步骤错误，或者VPS不兼容最新的内核，会导致无法开机等错误，请勿用于生产环境！！！！</strong></span></pre>
<h3 id="BBR 简单介绍">BBR 简单介绍</h3>
<p>BBR 是一个由谷歌社区开发的 TCP拥塞控制技术，目前处于开发初期，但是前景很棒，大家可以持续关注，同时BBR是集成与Linux最新版本的内核中的。</p>
<p>具体什么是TCP拥塞控制技术，详细的我也不懂，我就用通俗的解释一下，不一定准确，看一看理解一下就好了。</p>
<blockquote><p>原始的TCP流量传输，已经不能适应现在的互联网了，我们把 <strong>TCP流量比喻成 公路上的汽车流量，而TCP传输隧道就是 公路</strong>，那么：</p>
<p>在原始的TCP流量传输中，一条十字路口公路，很多车流量，但是却<strong>没有红绿灯和交警，导致大家左挤右挤的堵车了</strong>，这就是没有合理的管理导致的。</p>
<p><strong>而BBR和锐速等TCP流量控制技术，就是红绿灯+交警</strong>，他们就是在无人管理的十字路口，去合理指挥分配车流量，然后最大化的利用车流量，保证路面畅通。</p></blockquote>
<p>大概就是这样解释了，有什么错误请指出。</p>
<p><strong>BBR官方项目地址：</strong><a href="https://github.com/google/bbr" target="_blank" rel="noopener">https://github.com/google/bbr</a></p>
<h2 id="启动步骤">启动步骤</h2>
<p>首先是教程，本人喜欢Debian，所以我先使用 <strong>Debian 7 / 8 x64</strong> 系统来做测试。Ubuntu随后考虑加上。</p>
<pre>每一个步骤，我都会加上VPS中执行后的提示，<strong>本教程以64位为例</strong>。但是各个系统可能会存在差异，所以仅为参考。</pre>
<p><strong>在 2016-12-05 21:00 更新的 4.9.0-rc8 内核已经支持了TCP-BBR，最新内核<a href="http://kernel.ubuntu.com/~kernel-ppa/mainline/" target="_blank" rel="noopener">看这里</a>。</strong></p>
<pre>注意：TCP-BBR必须是 2016-12-05 21:00 更新的 4.9.0-rc8 内核及以后的版本 才能开启，而锐速并不支持这个最新的内核版本，所以TCP-BBR和锐速是不能共存的。</pre>
<hr />
<p><strong>更换内核需要ROOT权限的账号</strong>，所以如果你是普通用户 的话，需要切换到ROOT账号，如果你是ROOT账号，那就忽略这个步骤：</p>
<pre class="prettyprint linenums">sudo su
</pre>
<p>输入并回车后，会提示让你输入当前用户账号的密码，输入并回车后就可以继续下面的步骤了。</p>
<hr />
<pre class="prettyprint linenums">uname -m
</pre>
<p>使用这个命令会返回你的系统位数，如果是 <strong>x86_64 那就是64位</strong>，如果是 <strong>i386 或 386 或 i686 或 686 那就是32位</strong>。</p>
<h3 id="下载内核文件（64位系统）">下载内核文件（64位系统）</h3>
<pre class="prettyprint linenums">wget -O linux-image-4.16.0-amd64.deb "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb"</pre>
<h3 id="下载内核文件（32位系统）">下载内核文件（32位系统）</h3>
<pre class="prettyprint linenums">wget -O linux-image-4.16.0-i386.deb "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_i386.deb"</pre>
<p class="toggle" style="margin: 0;"><a href="#">点击展开 查看VPS提示</a></p><div class="toggle-box" style="display: none;"><p></p>
<pre class="prettyprint linenums"># VPS提示（64位）
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="52203d3d261230302063">[email protected]</a>:~# <strong>wget -O linux-image-4.16.0-amd64.deb "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb"</strong>
--2018-04-05 15:05:32-- http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb
Resolving kernel.ubuntu.com (kernel.ubuntu.com)... 91.189.94.216
Connecting to kernel.ubuntu.com (kernel.ubuntu.com)|91.189.94.216|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 53088470 (51M) [application/x-debian-package]
Saving to: `linux-image-4.16-amd64.deb'
100%[======================================================================================================================================>] 5,30,88,470 1.87M/s in 41s
2018-04-05 15:06:14 (1.23 MB/s) - `linux-image-4.16-amd64.deb' saved [53088470/53088470]
</pre>
<p></p></div>
<h3 id="安装内核（64位）">安装内核（64位）</h3>
<pre class="prettyprint linenums">dpkg -i linux-image-4.16.0-amd64.deb
</pre>
<h3 id="安装内核（32位）">安装内核（32位）</h3>
<pre class="prettyprint linenums">dpkg -i linux-image-4.16.0-i386.deb
</pre>
<p class="toggle" style="margin: 0;"><a href="#">点击展开 查看VPS提示</a></p><div class="toggle-box" style="display: none;"><p></p>
<pre class="prettyprint linenums"># VPS提示
# 示例还是显示文章以前的旧版本号，不用在意。
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="26544949526644445417">[email protected]</a>:~# <span style="color: #ff6464;"><strong>dpkg -i linux-image-4.16.0-amd64.deb</strong></span>
Selecting previously unselected package linux-image-4.10.1-040900rc8-generic.
(Reading database ... 25141 files and directories currently installed.)
Preparing to unpack linux-image-4.10.1-040900rc8-generic_4.10.1-040900rc8.201612051443_amd64.deb ...
Done.
Unpacking linux-image-4.10.1-040900rc8-generic (4.10.1-040900rc8.201612051443) ...
Setting up linux-image-4.10.1-040900rc8-generic (4.10.1-040900rc8.201612051443) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.10.1-040900rc8-generic /boot/vmlinuz-4.10.1-040900rc8-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.10.1-040900rc8-generic /boot/vmlinuz-4.10.1-040900rc8-generic
update-initramfs: Generating /boot/initrd.img-4.10.1-040900rc8-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.10.1-040900rc8-generic /boot/vmlinuz-4.10.1-040900rc8-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.10.1-040900rc8-generic
Found initrd image: /boot/initrd.img-4.10.1-040900rc8-generic
Found linux image: /boot/vmlinuz-3.16.0-4-amd64
Found initrd image: /boot/initrd.img-3.16.0-4-amd64
done
</pre>
<p></p></div>
<h3 id="列出并删除旧内核">列出并删除旧内核</h3>
<p><strong>列出VPS 除了刚才安装的内核以外的 所有内核名称：</strong></p>
<pre>注意：这个代码是排除了刚才安装的内核，所以不会显示刚才安装的那个内核。删除了多余的内核后，就会什么都不显示！</pre>
<pre class="prettyprint linenums">dpkg -l|grep linux-image | awk '{print $2}' | grep -v 'linux-image-[4-9].[0-9]*.'
</pre>
<pre class="prettyprint linenums"><a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="7f0d10100b3f1d1d0d4e">[email protected]</a>:~# <span style="color: #ff6464;"><strong>dpkg -l|grep linux-image | awk '{print $2}' | grep -v 'linux-image-[4-9].[0-9]*.'</strong></span>
linux-image-3.16.0-4-amd64
linux-image-amd64
</pre>
<p>我使用的VPS是<code> 3.16.0-4-amd64 </code>内核的，所以删除这两个内核：<code> linux-image-3.16.0-4-amd64、linux-image-amd64 </code>。</p>
<p><strong>删除旧内核：</strong></p>
<pre class="prettyprint linenums">apt-get purge 旧内核名称
</pre>
<pre class="prettyprint linenums"># ！！！！示例！！！！
# 比如我是有这两个内核，所以我把这两个删掉，不要照着我的这个步骤做，自己换成你VPS的内核名称！！！
apt-get purge linux-image-3.16.0-4-amd64
apt-get purge linux-image-amd64
# ！！！！示例！！！！</pre>
<p>删除旧内核的过程中会提示你是否继续，选择<code> Y </code>，然后还会提示你是否终止删除内核的行为，选择<code> NO </code>。</p>
<p><img class=" aligncenter" src="4lud5rzi-3.png" alt="" width="814" height="289" /></p>
<p class="toggle" style="margin: 0;"><a href="#">点击展开 查看VPS提示</a></p><div class="toggle-box" style="display: none;"><p></p>
<pre class="prettyprint linenums"># VPS提示
# 示例还是显示文章以前的旧版本号，不用在意。
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="483a27273c082a2a3a79">[email protected]</a>:~# <span style="color: #ff6464;"><strong>apt-get purge linux-image-3.16.0-4-amd64</strong></span>
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libuuid-perl linux-base
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
linux-image-3.16.0-4-amd64* linux-image-amd64*
0 upgraded, 0 newly installed, 2 to remove and 7 not upgraded.
After this operation, 164 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 31152 files and directories currently installed.)
Removing linux-image-3.16.0-4-amd64 (3.16.36-1+deb8u2) ...
Ok, proceeding with removing running kernel image.
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-3.16.0-4-amd64
/etc/kernel/postrm.d/zz-update-grub:
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.10.1-040900rc8-generic
Found initrd image: /boot/initrd.img-4.10.1-040900rc8-generic
done
The link /vmlinuz.old is a damaged link
Removing symbolic link vmlinuz.old
You may need to re-run your boot loader
The link /initrd.img.old is a damaged link
Removing symbolic link initrd.img.old
You may need to re-run your boot loader
Purging configuration files for linux-image-3.16.0-4-amd64 (3.16.36-1+deb8u2) ...
# ================================================
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="e2908d8d96a2808090d3">[email protected]</a>:~# <span style="color: #ff6464;"><strong>apt-get purge linux-image-amd64</strong></span>
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libuuid-perl linux-base
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
linux-image-amd64*
0 upgraded, 0 newly installed, 1 to remove and 7 not upgraded.
After this operation, 164 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 31152 files and directories currently installed.)
Removing linux-image-amd64 (3.16.36-1+deb8u2) ...
Ok, proceeding with removing running kernel image.
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-amd64
/etc/kernel/postrm.d/zz-update-grub:
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.10.1-040900rc8-generic
Found initrd image: /boot/initrd.img-4.10.1-040900rc8-generic
done
The link /vmlinuz.old is a damaged link
Removing symbolic link vmlinuz.old
You may need to re-run your boot loader
The link /initrd.img.old is a damaged link
Removing symbolic link initrd.img.old
You may need to re-run your boot loader
Purging configuration files for linux-image-amd64 (3.16.36-1+deb8u2) ...
# ================================================
# 最后在看一下内核是否只剩下教程安装的内核。
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="67150808132705051556">[email protected]</a>:~# <span style="color: #ff6464;"><strong>dpkg -l|grep linux-image | awk '{print $2}'</strong></span>
linux-image-4.10.1-040900-generic
</pre>
<p></p></div>
<h3 id="开启bbr">开启bbr</h3>
<pre class="prettyprint linenums">sed -i '/net\.core\.default_qdisc=fq/d' /etc/sysctl.conf
sed -i '/net\.ipv4\.tcp_congestion_control=bbr/d' /etc/sysctl.conf
# 上面两条命令是删除开启BBR代码的。如果你是升级内核(BBR),<strong>为了避免重复添加代码，所以先删除后添加。</strong>
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
# 执行这个保存生效更改。
sysctl -p
</pre>
<pre class="prettyprint linenums"># VPS提示
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="77051818033715150546">[email protected]</a>:~# <strong>sysctl -p</strong>
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr
</pre>
<h3 id="更新 grub 系统引导文件并重启VPS">更新 grub 系统引导文件并重启VPS</h3>
<pre class="prettyprint linenums"># 更新系统引导文件
update-grub
# 重启VPS，执行后SSH链接会断开，等十几秒再重新连接继续执行下面的启动命令。
reboot
</pre>
<pre class="prettyprint linenums"># VPS提示
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="76041919023614140447">[email protected]</a>:~# <span style="color: #ff6464;"><strong>update-grub</strong></span>
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.10.1-040900rc8-generic
Found initrd image: /boot/initrd.img-4.10.1-040900rc8-generic
done
</pre>
<h2 id="其他说明">其他说明</h2>
<h3 id="查看bbr是否开启">查看bbr是否开启</h3>
<p>执行下面命令，如果结果中有<strong>bbr</strong>，即证明你的内核已开启bbr。</p>
<pre class="prettyprint linenums">sysctl net.ipv4.tcp_congestion_control
</pre>
<p>执行下面命令，看到有 <strong>tcp_bbr</strong> 模块，即说明bbr已启动</p>
<pre class="prettyprint linenums">lsmod | grep bbr
</pre>
<pre class="prettyprint linenums"># VPS提示
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="a4d6cbcbd0e4c6c6d695">[email protected]</a>:~# <strong>sysctl net.ipv4.tcp_congestion_control</strong>
net.ipv4.tcp_congestion_control = <strong>bbr</strong>
# ================================================
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="e89a87879ca88a8a9ad9">[email protected]</a>:~# <span style="color: #ff6464;"><strong>lsmod | grep bbr</strong>
<strong>tcp_bbr</strong></span> 20480 0
</pre>
<h3 id="关闭bbr">关闭bbr</h3>
<pre class="prettyprint linenums">sed -i '/net\.core\.default_qdisc=fq/d' /etc/sysctl.conf
sed -i '/net\.ipv4\.tcp_congestion_control=bbr/d' /etc/sysctl.conf
sysctl -p
</pre>
<p>执行完上面的代码，就使用reboot重启VPS后才能关闭bbr，重启后再用下面的查看bbr状态代码，查看是否关闭了。</p>
<pre class="prettyprint linenums">reboot
</pre>
<h3 id="升级BBR">升级BBR</h3>
<p><strong>因为BBR只是内核中的一段功能代码，所以内核更新不一定是BBR更新</strong>，就像Win10中IE的位置一样，Win10更新不代表是为了更新IE，所以是否要更新内核要看BBR官方源码有没有更新了。</p>
<p><strong>BBR官方项目地址：</strong><a href="https://github.com/google/bbr" target="_blank" rel="noopener">https://github.com/google/bbr</a></p>
<p>注意<strong>BBR源码最后更新时间</strong>，如果比你的内核新，那么你可以更新内核，反之无需更新。</p>
<p>而升级BBR也就是重新安装最新内核，和上面更换内核的方法一样，只是版本号换成最新的。</p>
<h3 id="卸载BBR">卸载BBR</h3>
<p>BBR集成于内核中，所以卸载BBR=更换内核，教程：</p>
<p><a title="Debian更换内核教程 —— 4.10.x(BBR) 降低内核版本为 支持锐速的内核" href="8hzuha81.html" target="_blank" rel="noopener">Debian/Ubuntu 内核降级教程 —— 降低(BBR)为支持锐速的内核版本</a></p>
<h2 id="裸SS 与 锐速+SS 与 BBR+SS 速度对比">裸SS 与 锐速+SS 与 BBR+SS 速度对比</h2>
<p>本人的测试环境是：晚上23:00点，联通运营商，美国渣渣VPS。</p>
<pre>各个地区和运营商都存在差别，我的测试 速度对比仅供参考。谷歌网盘单线程下载测速地址：<a href="https://doub.io/go/100mb" target="_blank" rel="noopener">100MB</a></pre>
<p>因为是半夜测试的，再加上用的美国垃圾小鸡，所以 裸SS 速度感人。</p>
<p>使用<strong> 锐速+SS</strong> 后，单线程下载测速，翻了十倍，Youtube 也能看 <strong>1080P流畅</strong> 了。</p>
<p>换成 <strong>BBR+SS</strong> 后，单线程又在 <strong>锐速+SS 的基础上翻了一倍，Youtube 速度有上升了一个档次 </strong><strong>1440P 倒是勉强，1080P可以随便拖拉</strong>了。</p>
<pre>虽然 Youtube 的数值不是很准，但是还是有点用的，数值太低同样也代表速度不行。</pre>
<hr />
<p>总其以上，锐速(ServerSpeed)的技术已经成熟、定型，加速效果还是不错的，但是不再更新和维护了。</p>
<p>而 TCP-BBR 属于新生的技术，处于开发初期，买没有完善成熟，未来的潜力相信还好更好。</p>
<p><strong>所以总的来说：非折腾党，还是建议先使用锐速观望 TCP-BBR 一段时间，这是最稳妥的办法。</strong></p>
<h3 id="裸 SS">裸 SS</h3>
<p><img class=" aligncenter" src="k55h52je-8.png" alt="" width="409" height="222" /></p>
<p><img class=" aligncenter" src="nz9ekdfc-7.png" alt="" width="416" height="72" /></p>
<h3 id="锐速+SS">锐速+SS</h3>
<p><img class=" aligncenter" src="ru1coqcb-7.png" alt="" width="416" height="226" /></p>
<p><img class=" aligncenter" src="uc5-53_a-5.png" alt="" width="412" height="82" /></p>
<h3 id="BBR+SS">BBR+SS</h3>
<p><img class=" aligncenter" src="7gmaj4wh-3.png" alt="" width="409" height="214" /></p>
<p><img class=" aligncenter" src="032g0q3j-5.png" alt="" width="404" height="70" /></p>
<p>本文章安装步骤来自：<a href="https://github.com/iMeiji/shadowsocks_install/wiki/开启TCP-BBR拥塞控制算法" target="_blank" rel="noopener">https://github.com/iMeiji/shadowsocks_install/wiki/开启TCP-BBR拥塞控制算法</a></p>
<p><pre style="border-left: solid 4px #1abc9c;"><strong>转载请超链接注明：</strong><a href="index.html">逗比根据地</a> » <a href="0e6gd2jc-2.html">比锐速还强的 TCP拥塞控制技术 —— TCP-BBR 测试及开启教程</a></pre><pre><strong>责任声明：</strong>本站一切资源仅用作交流学习，请勿用作商业或违法行为！如造成任何后果，本站概不负责！</pre></p>
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<i class="fa fa-comments-o"></i> <b> (91)</b>个小伙伴在吐槽
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<li class="comment even thread-even depth-1" id="comment-41810"><div class="c-avatar"><div class="c-main" id="div-comment-41810">补充：Debian9 默认的内核就是 4.9 的内核而且编译了 TCP BBR 的内容，所以可以直接通过参数开启。
<pre class="prettyprint linenums" >1、修改系统变量：
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
2、保存生效
sysctl -p
3、执行
sysctl net.ipv4.tcp_available_congestion_control
如果结果是这样
net.ipv4.tcp_available_congestion_control = bbr cubic reno
就开启了。
执行 lsmod | grep bbr，以检测 BBR 是否开启。
</pre><div class="c-meta"><span class="c-author">coolglay</span>2018-08-17 00:48 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=41810#respond' onclick='return addComment.moveForm( "div-comment-41810", "41810", "respond", "1728" )' aria-label='回复给coolglay'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-39218"><div class="c-avatar"><div class="c-main" id="div-comment-39218">[信息] 内核安装包下载成功，开始安装内核...
(Reading database ... 44724 files and directories currently installed.)
Preparing to unpack linux-image-4.9.109-amd64.deb ...
Done.
Unpacking linux-image-4.9.109-0409109-generic (4.9.109-0409109.201806160833) ove r (4.9.109-0409109.201806160833) ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.9.109-0409109-generi c /boot/vmlinuz-4.9.109-0409109-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.9.109-0409109-generic /boot/vmlinuz-4.9.109-0409109-generic
Setting up linux-image-4.9.109-0409109-generic (4.9.109-0409109.201806160833) .. .
Running depmod.
update-initramfs: deferring update (hook will be called later)
initrd.img(/boot/initrd.img-4.9.109-0409109-generic
) points to /boot/initrd.img-4.9.109-0409109-generic
(/boot/initrd.img-4.9.109-0409109-generic) -- doing nothing at /var/lib/dpkg/in fo/linux-image-4.9.109-0409109-generic.postinst line 491.
vmlinuz(/boot/vmlinuz-4.9.109-0409109-generic
) points to /boot/vmlinuz-4.9.109-0409109-generic
(/boot/vmlinuz-4.9.109-0409109-generic) -- doing nothing at /var/lib/dpkg/info/ linux-image-4.9.109-0409109-generic.postinst line 491.
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.9.109-0409109-gen eric /boot/vmlinuz-4.9.109-0409109-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.9.109-0409109-gene ric /boot/vmlinuz-4.9.109-0409109-generic
update-initramfs: Generating /boot/initrd.img-4.9.109-0409109-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.9.109-0409109-gener ic /boot/vmlinuz-4.9.109-0409109-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.9.109-0409109-generic
Found initrd image: /boot/initrd.img-4.9.109-0409109-generic
Found linux image: /boot/vmlinuz-3.16.0-6-amd64
Found initrd image: /boot/initrd.img-3.16.0-6-amd64
每次都卡到这里 啥问题<div class="c-meta"><span class="c-author">BH9BGS</span>2018-06-19 16:47 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=39218#respond' onclick='return addComment.moveForm( "div-comment-39218", "39218", "respond", "1728" )' aria-label='回复给BH9BGS'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-39222"><div class="c-avatar"><div class="c-main" id="div-comment-39222">你提供的信息似乎没有报错信息，你可以尝试低版本的内核试试。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-06-19 18:31 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=39222#respond' onclick='return addComment.moveForm( "div-comment-39222", "39222", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div><ul class="children">
<li class="comment odd alt depth-3" id="comment-39330"><div class="c-avatar"><div class="c-main" id="div-comment-39330">108.109都试了依然不行，是不是系统版本的问题，我买的哪个vps最低只能Debian 8 64bit<div class="c-meta"><span class="c-author">BH9BGS</span>2018-06-21 22:21 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=39330#respond' onclick='return addComment.moveForm( "div-comment-39330", "39330", "respond", "1728" )' aria-label='回复给BH9BGS'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-4" id="comment-39343"><div class="c-avatar"><div class="c-main" id="div-comment-39343">那就再试试 .100 以下的版本。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-06-22 10:38 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=39343#respond' onclick='return addComment.moveForm( "div-comment-39343", "39343", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt depth-3" id="comment-39334"><div class="c-avatar"><div class="c-main" id="div-comment-39334">极光VPS debian 8 64和gigsgigscloud debian 7 64俩个都卡这个位置不东
NGC，BWG俩个正常，是VPS支持的问题么？<div class="c-meta"><span class="c-author">BH9BGS</span>2018-06-22 00:07 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=39334#respond' onclick='return addComment.moveForm( "div-comment-39334", "39334", "respond", "1728" )' aria-label='回复给BH9BGS'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-4" id="comment-39344"><div class="c-avatar"><div class="c-main" id="div-comment-39344">更换其他系统试试，如果全都是这样，那可能是IDC的系统模板有问题。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-06-22 10:45 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=39344#respond' onclick='return addComment.moveForm( "div-comment-39344", "39344", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt thread-even depth-1" id="comment-35732"><div class="c-avatar"><div class="c-main" id="div-comment-35732">TCP-BBR 已经更新到 linux-image-4.16.0-041600-generic （2018年4月1日更新）了博主也把教程更新一下吧~~
新版的BBR使用 sysctl net.ipv4.tcp_available_congestion_control 查看BBR是否开启的命令时所给出的输出也不一样了。
64位 ：
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb
32位：
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_i386.deb<div class="c-meta"><span class="c-author">ver007</span>2018-04-05 14:04 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=35732#respond' onclick='return addComment.moveForm( "div-comment-35732", "35732", "respond", "1728" )' aria-label='回复给ver007'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-35756"><div class="c-avatar"><div class="c-main" id="div-comment-35756">更新了。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-04-05 15:41 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=35756#respond' onclick='return addComment.moveForm( "div-comment-35756", "35756", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div><ul class="children">
<li class="comment odd alt depth-3" id="comment-35800"><div class="c-avatar"><div class="c-main" id="div-comment-35800">问一下博主这个TCP-BBR项目是不是有几个长期更新的内核的啊？我看在项目列表里面4.4.x、4.9.x、4.14.x这几个老的内核一直都在更新~~<div class="c-meta"><span class="c-author">ver007</span>2018-04-06 09:04 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=35800#respond' onclick='return addComment.moveForm( "div-comment-35800", "35800", "respond", "1728" )' aria-label='回复给ver007'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-4" id="comment-35815"><div class="c-avatar"><div class="c-main" id="div-comment-35815">都是同步更新的，每个大版本都会有一些大的改动，为了应对不同的使用人群和测试稳定性之类的，所以一些大版本都会同步更新，理论上版本号越大越可能问题多，所以一般情况下，要用 BBR 只需要安装 4.9.XX 这个稳定版的内核即可（Debian9 系统默认就是 4.9.XX 内核）。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-04-06 17:15 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=35815#respond' onclick='return addComment.moveForm( "div-comment-35815", "35815", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div><ul class="children">
<li class="comment odd alt depth-5" id="comment-35861"><div class="c-avatar"><div class="c-main" id="div-comment-35861">我的VPS上使用的系统是 Ubuntu 16.04LTS 也选择4.9.xx这个内核比较好吗？<div class="c-meta"><span class="c-author">ver007</span>2018-04-07 11:35 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=35861#respond' onclick='return addComment.moveForm( "div-comment-35861", "35861", "respond", "1728" )' aria-label='回复给ver007'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-6" id="comment-35869"><div class="c-avatar"><div class="c-main" id="div-comment-35869">是的。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-04-07 14:13 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=35869#respond' onclick='return addComment.moveForm( "div-comment-35869", "35869", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-33905"><div class="c-avatar"><div class="c-main" id="div-comment-33905">用的是降级教程里的3.2.0.4内核，用本文方法开启bbr无效<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="35475a5a41754340594147">[email protected]</a>:~# echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="cdbfa2a2b98dbbb8a1b9bf">[email protected]</a>:~# echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="c2b0adadb682b4b7aeb6b0">[email protected]</a>:~# sysctl -p
net.ipv6.conf.all.accept_ra = 2
sysctl: cannot stat /proc/sys/net/core/default_qdisc: No such file or directory
sysctl: setting key "net.ipv4.tcp_congestion_control": No such file or directory
net.ipv4.tcp_congestion_control = bbr
sysctl: cannot stat /proc/sys/net/core/default_qdisc: No such file or directory
sysctl: setting key "net.ipv4.tcp_congestion_control": No such file or directory
net.ipv4.tcp_congestion_control = bbr
<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="eb9984849fab9d9e879f99">[email protected]</a>:~# ./brook.sh<div class="c-meta"><span class="c-author">new010</span>2018-03-19 23:07 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=33905#respond' onclick='return addComment.moveForm( "div-comment-33905", "33905", "respond", "1728" )' aria-label='回复给new010'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-34002"><div class="c-avatar"><div class="c-main" id="div-comment-34002">当前内核版本是什么？不建议最新版本的内核，推荐 4.9.xx 稳定版内核（4.9以后的都是测试版，两种版本分别更新），BBR加速效果没区别。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-03-20 10:05 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=34002#respond' onclick='return addComment.moveForm( "div-comment-34002", "34002", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt thread-even depth-1" id="comment-31348"><div class="c-avatar"><div class="c-main" id="div-comment-31348">大佬我问一下，你发的那个最新内核链接，里面同一个版本里面，linux-headers和linux-image有啥区别呀？还有不带后缀和带-generic或-lowlatency后缀的区别<div class="c-meta"><span class="c-author">Nanami</span>2018-02-11 23:18 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=31348#respond' onclick='return addComment.moveForm( "div-comment-31348", "31348", "respond", "1728" )' aria-label='回复给Nanami'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment even thread-odd thread-alt depth-1" id="comment-31305"><div class="c-avatar"><div class="c-main" id="div-comment-31305">toyo您好，请问如果系统有多个内核可不可以不删除，不删除的话会有什么影响呢，谢谢回答 <img data-original="https://doub.io/wp-content/themes/yusi1.0/img/smilies/icon_smile.gif" alt=":smile:" class="wp-smiley" style="height: 1em; max-height: 1em;" /><div class="c-meta"><span class="c-author">Jie</span>2018-02-10 20:01 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=31305#respond' onclick='return addComment.moveForm( "div-comment-31305", "31305", "respond", "1728" )' aria-label='回复给Jie'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor odd alt depth-2" id="comment-31318"><div class="c-avatar"><div class="c-main" id="div-comment-31318">主要是调整内核配置，让系统使用支持BBR模块的内核，旧内核不删也行，不过为了低出错率，我的教程和脚本都默认删除。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2018-02-11 00:40 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=31318#respond' onclick='return addComment.moveForm( "div-comment-31318", "31318", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment even thread-even depth-1" id="comment-25816"><div class="c-avatar"><div class="c-main" id="div-comment-25816">流量控制跟拥塞控制是不同的。流量控制指TCP发送方的传送速度要与TCP接收方的接收速度相匹配，与线路是否拥堵无关。拥塞控制是指检测线路是否拥堵，以调整传送速度。另外，你的比喻是不恰当的。TCP拥塞控制不是用来指挥分配线路上的流量。你的主机并没有这个管辖的权力。传统的TCP拥塞控制算法将丢包视为网络拥堵，然后降低传送速度。但丢包并不总是由网络拥堵造成的，所以造成了TCP性能的浪费。<div class="c-meta"><span class="c-author"><a href='https://www.linuxbabe.com/' rel='external nofollow' class='url'>LinuxGuy</a></span>2017-12-16 16:22 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=25816#respond' onclick='return addComment.moveForm( "div-comment-25816", "25816", "respond", "1728" )' aria-label='回复给LinuxGuy'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor odd alt depth-2" id="comment-26560"><div class="c-avatar"><div class="c-main" id="div-comment-26560">好吧好吧，我不是互联网专业的，专业性的东西我都不懂，只能写写小白教程，看看就行。（以前查了下 BBR的原理解释什么的，看的一脸懵逼，各种专业术词完全看不懂。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-12-17 15:52 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=26560#respond' onclick='return addComment.moveForm( "div-comment-26560", "26560", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment even thread-odd thread-alt depth-1" id="comment-24906"><div class="c-avatar"><div class="c-main" id="div-comment-24906">安装后提示：/boot/grub2/grub.cfg not found, please check it.<div class="c-meta"><span class="c-author">Once</span>2017-12-15 11:43 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=24906#respond' onclick='return addComment.moveForm( "div-comment-24906", "24906", "respond", "1728" )' aria-label='回复给Once'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-even depth-1" id="comment-24090"><div class="c-avatar"><div class="c-main" id="div-comment-24090">toyo你好！我根据你的方法安装了4.9.68版本的内核，但在安装时我看到提示：没有安装内核的头文件，虽然说这不影响bbr的安装与开启。但我之后打算通过apt install的指令来安装4.9.68内核对应的头文件，然而系统提示无法找到安装包，因此我打算手动安装。所以请问要如何手动安装4.9.68内核对应的头文件？<div class="c-meta"><span class="c-author">aes256</span>2017-12-10 18:07 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=24090#respond' onclick='return addComment.moveForm( "div-comment-24090", "24090", "respond", "1728" )' aria-label='回复给aes256'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-24099"><div class="c-avatar"><div class="c-main" id="div-comment-24099">那就换低版本的内核，比如 4.9.59 ，头部文件在内核里。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-12-10 23:58 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=24099#respond' onclick='return addComment.moveForm( "div-comment-24099", "24099", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-24026"><div class="c-avatar"><div class="c-main" id="div-comment-24026">安装失败是咋回事啊
Found linux image: /boot/vmlinuz-4.10.1-041001-generic
Found initrd image: /boot/initrd.img-4.10.1-041001-generic
Found linux image: /boot/vmlinuz-3.2.0-4-amd64
Found initrd image: /boot/initrd.img-3.2.0-4-amd64
Segmentation fault
Message from <a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="73000a001f1c141733321f1a0516201e121f1f5e253e">[email protected]</a> at Dec 8 01:57:01 ...
kernel:[ 247.271804] general protection fault: 0000 [#1] SMP
Message from <a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="8cfff5ffe0e3ebe8cccde0e5fae9dfe1ede0e0a1dac1">[email protected]</a> at Dec 8 01:57:01 ...
kernel:[ 247.272014] Stack:
Message from <a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="e99a909a85868e8da9a885809f8cba84888585c4bfa4">[email protected]</a> at Dec 8 01:57:01 ...
kernel:[ 247.272014] Call Trace:
Message from <a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="32414b415e5d555672735e5b4457615f535e5e1f647f">[email protected]</a> at Dec 8 01:57:01 ...
kernel:[ 247.272014] Code: 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 49 8b 7f 10 e8 01 4e 04 00 eb d9 48 8b 47 10 48 8b 50 28 48 85 d2 75 05 48 83 c0 30 c3 e2 55 48 89 d5 53 48 89 f3 41 52 48 8b 7f 68 e8 d9 ff ff ff<div class="c-meta"><span class="c-author">xigua</span>2017-12-08 15:00 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=24026#respond' onclick='return addComment.moveForm( "div-comment-24026", "24026", "respond", "1728" )' aria-label='回复给xigua'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-24052"><div class="c-avatar"><div class="c-main" id="div-comment-24052">你的系统不支持更换内核。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-12-09 12:45 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=24052#respond' onclick='return addComment.moveForm( "div-comment-24052", "24052", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt thread-even depth-1" id="comment-23301"><div class="c-avatar"><div class="c-main" id="div-comment-23301">为什么不推荐魔改版，魔改版不是更暴力吗？如果只是翻墙的速度更好不是更好吗？
BBR确实加速挺好，本来720，现在可以直接1080了。<div class="c-meta"><span class="c-author">呵呵</span>2017-11-24 23:38 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=23301#respond' onclick='return addComment.moveForm( "div-comment-23301", "23301", "respond", "1728" )' aria-label='回复给呵呵'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-23310"><div class="c-avatar"><div class="c-main" id="div-comment-23310">因为更暴力，不平衡，所以才不推荐，别人我管不了，但我能管住我自己，况且我也用不上魔改版。原版BBR是谷歌社区的开发者长时间测试得出的最平衡最通用的参数，就连谷歌自己的网站服务器也都全部开启了BBR，而当你的服务器安装原版BBR访问谷歌也安装原版BBR的服务器，加速效果是最佳的。<br />
因为原版BBR更注重平衡和通用性，而第三方魔改的BBR，更注重速度暴力，经过使用者反馈，也有一些人在使用魔改BBR的过程中发现，流量多消耗了很多，但是速度却还没有原版BBR快，魔改BBR只适用于部分情况服务器，而原版BBR更加通用，毕竟目前的第三方魔改BBR只是看了看源码改了改一些参数罢了，和原版的大量环境因素测试比不了。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-11-25 10:50 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=23310#respond' onclick='return addComment.moveForm( "div-comment-23310", "23310", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-20218"><div class="c-avatar"><div class="c-main" id="div-comment-20218">版瓦工 用不了BBR? 在删除旧内核那里显示删除失败<div class="c-meta"><span class="c-author">唐海埔</span>2017-10-13 19:26 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=20218#respond' onclick='return addComment.moveForm( "div-comment-20218", "20218", "respond", "1728" )' aria-label='回复给唐海埔'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-20223"><div class="c-avatar"><div class="c-main" id="div-comment-20223">搬瓦工 KVM可以更换内核并启用BBR。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-10-13 20:29 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=20223#respond' onclick='return addComment.moveForm( "div-comment-20223", "20223", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment odd alt depth-2" id="comment-23506"><div class="c-avatar"><div class="c-main" id="div-comment-23506">搬瓦工现在有些OS自带BBR<div class="c-meta"><span class="c-author">彭秋红</span>2017-11-28 09:58 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=23506#respond' onclick='return addComment.moveForm( "div-comment-23506", "23506", "respond", "1728" )' aria-label='回复给彭秋红'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment even thread-even depth-1" id="comment-20217"><div class="c-avatar"><div class="c-main" id="div-comment-20217">到删除多余内核那来怎么选择到 NO （默认YES）<div class="c-meta"><span class="c-author">唐海埔</span>2017-10-13 19:12 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=20217#respond' onclick='return addComment.moveForm( "div-comment-20217", "20217", "respond", "1728" )' aria-label='回复给唐海埔'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor odd alt depth-2" id="comment-20222"><div class="c-avatar"><div class="c-main" id="div-comment-20222">键盘 左右方向键 选择，回车键 确定。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-10-13 20:27 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=20222#respond' onclick='return addComment.moveForm( "div-comment-20222", "20222", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment even thread-odd thread-alt depth-1" id="comment-16367"><div class="c-avatar"><div class="c-main" id="div-comment-16367">系统是 Debian 7 X64 下载好内核 下一步安装的时候提示这个 求解
[<a href="q6b2hdbe.html" class="__cf_email__" data-cfemail="89fbe6e6fdc9ffbb">[email protected]</a> ~]# dpkg -i linux-image-4.10.1-amd64.deb
bash: dpkg: command not found<div class="c-meta"><span class="c-author">kpc</span>2017-08-02 20:54 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=16367#respond' onclick='return addComment.moveForm( "div-comment-16367", "16367", "respond", "1728" )' aria-label='回复给kpc'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-even depth-1" id="comment-15291"><div class="c-avatar"><div class="c-main" id="div-comment-15291">bbr版本可以升级吗？还是安装后就不用管了？<div class="c-meta"><span class="c-author">crane</span>2017-07-05 15:36 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=15291#respond' onclick='return addComment.moveForm( "div-comment-15291", "15291", "respond", "1728" )' aria-label='回复给crane'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor even depth-2" id="comment-15306"><div class="c-avatar"><div class="c-main" id="div-comment-15306">可以升级/降级，步骤一样，只是版本号自己改一下就行了（准确说是升级内核，而BBR只是内核中的一个功能一段代码，内核版本更新不代表BBR也代码升级更新了，就像你win系统升级 不会每次升级都是升级系统里的IE等软件的）。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-07-06 16:59 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=15306#respond' onclick='return addComment.moveForm( "div-comment-15306", "15306", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-14665"><div class="c-avatar"><div class="c-main" id="div-comment-14665">https://suiyuanjian.com/139.html 我写了个ssr+bbr一键脚本，可以多多交流嘛~<div class="c-meta"><span class="c-author"><a href='https://suiyuanjian.com/' rel='external nofollow' class='url'>随缘箭</a></span>2017-06-10 18:06 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=14665#respond' onclick='return addComment.moveForm( "div-comment-14665", "14665", "respond", "1728" )' aria-label='回复给随缘箭'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-14010"><div class="c-avatar"><div class="c-main" id="div-comment-14010">执行lsmod | grep bbr 后
出现tcp_bbr 20480 0(请问这两个数字什么意思，和速度有关吗？）<div class="c-meta"><span class="c-author">nobut</span>2017-05-21 17:17 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=14010#respond' onclick='return addComment.moveForm( "div-comment-14010", "14010", "respond", "1728" )' aria-label='回复给nobut'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-13656"><div class="c-avatar"><div class="c-main" id="div-comment-13656">debian7，686，下载安装4.10的内核也能开启BBR<div class="c-meta"><span class="c-author">哈哈</span>2017-05-11 01:26 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=13656#respond' onclick='return addComment.moveForm( "div-comment-13656", "13656", "respond", "1728" )' aria-label='回复给哈哈'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-13059"><div class="c-avatar"><div class="c-main" id="div-comment-13059">REboot 後 就沒法開機 也ping不到 請問是什麼因數 有辦法解決嗎?<div class="c-meta"><span class="c-author">QQ22</span>2017-04-22 21:43 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=13059#respond' onclick='return addComment.moveForm( "div-comment-13059", "13059", "respond", "1728" )' aria-label='回复给QQ22'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor odd alt depth-2" id="comment-13063"><div class="c-avatar"><div class="c-main" id="div-comment-13063"><pre class="prettyprint linenums" >注意：本教程涉及到VPS更换内核，所以如果步骤错误，或者VPS不兼容最新的内核，会导致无法开机等错误，请勿用于生产环境！
</pre>
解决办法，重装系统。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-04-22 22:34 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=13063#respond' onclick='return addComment.moveForm( "div-comment-13063", "13063", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment even thread-odd thread-alt depth-1" id="comment-12179"><div class="c-avatar"><div class="c-main" id="div-comment-12179">逗逼，请回我一下，我装了bbr后速度反而变慢了，这是怎么回事啊？好尴尬<div class="c-meta"><span class="c-author">Aaron</span>2017-03-29 20:03 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=12179#respond' onclick='return addComment.moveForm( "div-comment-12179", "12179", "respond", "1728" )' aria-label='回复给Aaron'>回复</a></div></div></div><ul class="children">
<li class="comment byuser comment-author-toyo bypostauthor odd alt depth-2" id="comment-12180"><div class="c-avatar"><div class="c-main" id="div-comment-12180">那可能，BBR不适合你的VPS或者你的网络。<div class="c-meta"><span class="c-author"><a href='index.html' rel='external nofollow' class='url'>Toyo</a></span>2017-03-29 20:41 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=12180#respond' onclick='return addComment.moveForm( "div-comment-12180", "12180", "respond", "1728" )' aria-label='回复给Toyo'>回复</a></div></div></div></li><!-- #comment-## -->
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<li class="comment even thread-even depth-1" id="comment-11689"><div class="c-avatar"><div class="c-main" id="div-comment-11689">bbr确实没有吹得那么厉害.<div class="c-meta"><span class="c-author"><a href='http://sindery.me/' rel='external nofollow' class='url'>南琴浪</a></span>2017-03-16 17:26 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=11689#respond' onclick='return addComment.moveForm( "div-comment-11689", "11689", "respond", "1728" )' aria-label='回复给南琴浪'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-11396"><div class="c-avatar"><div class="c-main" id="div-comment-11396">这个要看运气，我用了一下BBR，又换回锐速了。锐速是很暴力的加速，因此效果非常明显，BBR有效果，但是不明显。不过从稳定性上来说，比锐速要好一些。<div class="c-meta"><span class="c-author"><a href='http://www.17huiwei.com/' rel='external nofollow' class='url'>loren</a></span>2017-03-10 17:34 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=11396#respond' onclick='return addComment.moveForm( "div-comment-11396", "11396", "respond", "1728" )' aria-label='回复给loren'>回复</a></div></div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-10600"><div class="c-avatar"><div class="c-main" id="div-comment-10600">我的 virmach 启用了感觉一点效果都没有。。。<div class="c-meta"><span class="c-author"><a href="https://cyhour.com/" rel='external nofollow' class='url'>老杨</a></span>2017-02-13 17:09 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=10600#respond' onclick='return addComment.moveForm( "div-comment-10600", "10600", "respond", "1728" )' aria-label='回复给老杨'>回复</a></div></div></div><ul class="children">
<li class="comment odd alt depth-2" id="comment-11225"><div class="c-avatar"><div class="c-main" id="div-comment-11225">我是买了virmach直接上bbr，所以没有对比，感觉现在直接看720P都很流畅啊。<div class="c-meta"><span class="c-author">n</span>2017-03-05 17:26 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=11225#respond' onclick='return addComment.moveForm( "div-comment-11225", "11225", "respond", "1728" )' aria-label='回复给n'>回复</a></div></div></div><ul class="children">
<li class="comment even depth-3" id="comment-12485"><div class="c-avatar"><div class="c-main" id="div-comment-12485">我也用的virmach，用了BBR效果碉堡，Y2B直接上4K了。。。<div class="c-meta"><span class="c-author">vir</span>2017-04-06 10:04 <a rel='nofollow' class='comment-reply-link' href='https://doub.io/wlzy-15/?replytocom=12485#respond' onclick='return addComment.moveForm( "div-comment-12485", "12485", "respond", "1728" )' aria-label='回复给vir'>回复</a></div></div></div></li><!-- #comment-## -->
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