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KVM的虚机如何限速

 7 months ago
source link: https://bajie.dev/posts/20240124-kvm_limit_bandwidth/
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KVM的虚机如何限速

2024-01-24 1 分钟阅读

需要开一台kvm的测试机，但是需要限制速度，10M

我们的物理机使用了bridge，以及vlan tag，所以虚机的网卡是br0.141

查了一圈文档

    <interface type='bridge'>
      <mac address='52:54:00:db:4c:5f'/>
      <source bridge='br0.141'/>
      <bandwidth>
        <inbound average='1250' peak='1250' burst='1250'/>
        <outbound average='1250' peak='1250' burst='1250'/>
      </bandwidth>
      <model type='virtio'/>

注意限速的单位：是kilobyte per second

1250 kilobyte per second, KB/s = 10 Mbps = 1.25 MB/s

10 Mbps就是通常意义上的网速，/8=1.25 MB/s，就是机器上用下载软件比如迅雷下载，看到的速度（1.25 MB/s）。


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