发现内网一台Linux服务器向上传输文件时候速度很慢,只有1mb每秒,怀疑网卡运行模式不对,
使用如下命令查看当前网卡运行模式
ethtool eth0
得到信息
Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 10Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on MDI-X: Unknown Supports Wake-on: g Wake-on: d Current message level: 0x00000000 (0) Link detected: yes
发现网卡是运行在低速的10mb模式下,使用如下命令调整网卡模式未100mb全双工
ethtool -s eth0 speed 100 duplex fullethtool -s eth0 speed 100 duplex full
再次查看网卡得到信息如下
Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 100baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on MDI-X: Unknown Supports Wake-on: g Wake-on: d Current message level: 0x00000000 (0) Link detected: yes
测试文件传输,达到每秒10mb,速度正常
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