linux下，获取网络接口的传输速率

ethtool eth0

[root@voipack ~]# ethtool eth0

Settings for eth0:

Supported ports: [ TP ]

Supported link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

1000baseT/Full

Supports auto-negotiation: Yes

Advertised link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

1000baseT/Full

Advertised auto-negotiation: Yes

Speed: 100Mb/s

Duplex: Full

Port: Twisted Pair

PHYAD: 0

Transceiver: internal

Auto-negotiation: on

Supports Wake-on: umbg

Wake-on: g

Current message level: 0x00000007 (7)

Link detected: yes

网卡的接口最大上限应该是各个网口绑定在一起，采用负载均衡的策略达到的最大流量值（等于单口网口的流量值*网口个数）。

单个网口的流量值根据千兆网卡还是万兆网卡来计算，千兆就是1000Mb/s，也就是1000/8=125MB/s，而实际在100MB/s差不多。

不管是用shell还是C语言都是可以实现的。

# ethtool eth0

Settings for eth0:

Supported ports: [ TP MII ]

Supported link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

Supports auto-negotiation: Yes

Advertised link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

Advertised auto-negotiation: Yes

Speed: 10Mb/s

Duplex: Half

Port: MII

PHYAD: 32

Transceiver: internal

Auto-negotiation: on

Supports Wake-on: pumbg

Wake-on: d

Current message level: 0×00000007 (7)

Link detected: yes

# ethtool -s eth0 speed 100 duplex full autoneg off

# ethtool eth0

Settings for eth0:

Supported ports: [ TP MII ]

Supported link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

Supports auto-negotiation: Yes

Advertised link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

Advertised auto-negotiation: No

Speed: 100Mb/s

Duplex: Full

Port: MII

PHYAD: 32

Transceiver: internal

Auto-negotiation: off

Supports Wake-on: pumbg

Wake-on: d

Current message level: 0×00000007 (7)

Link detected: yes

前两天在51cto 6个豆豆下的资料，挺不错的，匿名，没法给你。。= . =...

---