45 lines
1.1 KiB
Markdown
45 lines
1.1 KiB
Markdown
---
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title: "开启系统自带的TCP BBR加速"
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date: 2024-07-02T17:19:38+08:00
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tags: []
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---
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> **系统自带内核高于 4.9 则默认已包含 BBR**
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### 1. 检查内核版本
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```bash
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uname -r
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```
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> 内核版本高于 4.9 就行。
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### 2. 开启 BBR
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通过向 `/etc/sysctl.conf`文件添加配置来启用 BBR
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```bash
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echo "net.core.default_qdisc=fq" | sudo tee -a /etc/sysctl.conf
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echo "net.ipv4.tcp_congestion_control=bbr" | sudo tee -a /etc/sysctl.conf
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```
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### 3. 生效更改
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```bash
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su root -c "sudo sysctl -p"
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```
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### 4. 生效检测
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**执行下面命令，如果结果中带有****[bbr](https://www.moeelf.com/tag/bbr "View all posts in bbr")** **，则证明你的内核已开启****[bbr](https://www.moeelf.com/tag/bbr "View all posts in bbr")** **。**
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```bash
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sysctl net.ipv4.tcp_available_congestion_control
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```
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**注：也可以执行下面命令，如果结果中有****[bbr](https://www.moeelf.com/tag/bbr "View all posts in bbr")** **，也可以证明你的内核已开启****[bbr](https://www.moeelf.com/tag/bbr "View all posts in bbr")** **。**
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```bash
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lsmod | grep bbr
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```
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