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运行速度低于 1 千兆位的 10g 网卡

tag-icon • tag-icon routing 10gbethernet
运行速度低于 1 千兆位的 10g 网卡

我在我的两台服务器中安装了万兆光纤卡，但是当我测试它们的吞吐量时，它们的速度只有 600Mbps 左右：

$ scp random.1G rcm2:/tmp
random.1G 100% 1024MB  73.1MB/s   00:14

我的路线看起来正确。网络驱动程序和硬件似乎设置正确。

有人能告诉我下一步应该去哪里找吗？

以下是更多信息：

路由

172.16.157.34

$ ip route get 172.16.157.35
172.16.157.35 dev eth1  src 172.16.157.34

172.16.157.35

$ ip route get 172.16.157.34
172.16.157.34 dev eth2  src 172.16.157.35

硬件/ifconfig

172.16.157.34

$ ifconfig
...
eth2      Link encap:Ethernet  HWaddr 90:e2:ba:38:aa:ee  
          inet addr:172.16.157.34  Bcast:172.16.157.63  Mask:255.255.255.224
...
$ lshw -class network
   ...
   description: Ethernet interface
   product: 82599EB 10-Gigabit SFI/SFP+ Network Connection
   ...
   serial: 90:e2:ba:38:aa:ee
   ...

172.16.157.35

$ ifconfig
...
eth1      Link encap:Ethernet  HWaddr 90:E2:BA:38:AA:82  
          inet addr:172.16.157.35  Bcast:172.16.157.63  Mask:255.255.255.224
...
$ lshw -class network
   ...
   description: Ethernet interface
   product: 82599EB 10-Gigabit SFI/SFP+ Network Connection
   ...
   serial: 90:e2:ba:38:aa:82
   ...

驱动程序设置

172.16.157.34

$ sudo ethtool eth2 
Settings for eth2:
    Supported ports: [ FIBRE ]
    Supported link modes:   1000baseT/Full 
                            10000baseT/Full 
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes:  1000baseT/Full 
                            10000baseT/Full 
    Advertised pause frame use: No
    Advertised auto-negotiation: Yes
    Speed: 10000Mb/s
    Duplex: Full
    Port: FIBRE
    PHYAD: 0
    Transceiver: external
    Auto-negotiation: on
    Supports Wake-on: d
    Wake-on: d
    Current message level: 0x00000007 (7)
                   drv probe link
    Link detected: yes

172.16.157.35

$ sudo ethtool eth1
[sudo] password for jsp: 
Settings for eth1:
    Supported ports: [ FIBRE ]
    Supported link modes:   1000baseT/Full 
                            10000baseT/Full 
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes:  1000baseT/Full 
                            10000baseT/Full 
    Advertised pause frame use: No
    Advertised auto-negotiation: Yes
    Speed: 10000Mb/s
    Duplex: Full
    Port: FIBRE
    PHYAD: 0
    Transceiver: external
    Auto-negotiation: on
    Supports Wake-on: d
    Wake-on: d
    Current message level: 0x00000007 (7)
                   drv probe link
    Link detected: yes

答案1

scp在传输过程中加密数据的开销很大。更薄的加密技术nc将为您提供更好的吞吐量，并更真实地测试您的服务器和网络的物理功能。

另外，请确保瓶颈不存在于磁盘等其他地方。使用 iperf 或类似工具来测试非磁盘限制吞吐量。

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