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对简单的绑定吞吐量感到困惑，无法获得超过 Gig 的吞吐量

tag-icon • tag-icon linux linux-networking bonding
对简单的绑定吞吐量感到困惑，无法获得超过 Gig 的吞吐量

我有一台安装了 QLogic 千兆以太网的 DL380 服务器。只是想创建一个绑定，但似乎无法获得超过 1 Gig 的链路。2 台服务器的所有 3 根电缆都连接到 S40 交换机，我在该交换机上创建了 LACP（滞后），链路建立并且滞后显示为活动状态，但我就是无法获得超过 1 Gig 的吞吐量。我正在使用 iperf3 进行测试。尝试了所有不同的绑定模式、rr、802.3d 等，但速度都无法超过 900 Mbps 左右。我遗漏了一些东西，但无法弄清楚。

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer3+4 (1)
MII Status: up
MII Polling Interval (ms): 0
Up Delay (ms): 0
Down Delay (ms): 0

802.3ad info
LACP rate: fast
Min links: 0
Aggregator selection policy (ad_select): stable
System priority: 65535
System MAC address: 9c:8e:99:0b:78:70
Active Aggregator Info:
    Aggregator ID: 4
    Number of ports: 3
    Actor Key: 9
    Partner Key: 418
    Partner Mac Address: 00:01:e8:d5:f4:f3

Slave Interface: enp3s0f1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 9c:8e:99:0b:78:70
Slave queue ID: 0
Aggregator ID: 4
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0
details actor lacp pdu:
    system priority: 65535
    system mac address: 9c:8e:99:0b:78:70
    port key: 9
    port priority: 255
    port number: 1
    port state: 63
details partner lacp pdu:
    system priority: 32768
    system mac address: 00:01:e8:d5:f4:f3
    oper key: 418
    port priority: 128
    port number: 12
    port state: 63

Slave Interface: enp4s0f0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 9c:8e:99:0b:78:72
Slave queue ID: 0
Aggregator ID: 4
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0
details actor lacp pdu:
    system priority: 65535
    system mac address: 9c:8e:99:0b:78:70
    port key: 9
    port priority: 255
    port number: 2
    port state: 63
details partner lacp pdu:
    system priority: 32768
    system mac address: 00:01:e8:d5:f4:f3
    oper key: 418
    port priority: 128
    port number: 7
    port state: 63

Slave Interface: enp4s0f1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 9c:8e:99:0b:78:74
Slave queue ID: 0
Aggregator ID: 4
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0
details actor lacp pdu:
    system priority: 65535
    system mac address: 9c:8e:99:0b:78:70
    port key: 9
    port priority: 255
    port number: 3
    port state: 63
details partner lacp pdu:
    system priority: 32768
    system mac address: 00:01:e8:d5:f4:f3
    oper key: 418
    port priority: 128
    port number: 5
    port state: 63

尝试了各种谷歌搜索，但似乎无法解决问题。我没有任何想法。如果有人能给我指明正确的方向，我将不胜感激。

谢谢。

答案1

@ewwhite是的。我来解释一下。当你测试两台机器之间的链路时，你只使用一个网卡，LACP 不会将数据包拆分到多个接口上，用于单个流/线程。例如，单个 TCP 流将始终在同一个网卡上发送/接收数据包。因此，只有在使用多个目的地进行测试时，你才能看到更高的速度。好答案，其中描述了。

答案2

看来绑定和 LACP 是网络领域中最难理解的概念之一。

但简而言之，您永远无法通过单个源-目标对实现多条连接的传输。如果您需要在单个连接上获得更多带宽，则必须迁移到 10GbE。

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