ethtool 查看网卡是否丢包

ethtool 有一个参数可以查看网卡收发包的统计信息:
ethtool -S eth0  //  这样就可以查看网卡的收发包的信息，并会看到是不是一些相关的error包
结果如下:
NIC statistics:
     rx_bytes: 884421533120
     rx_error_bytes: 0
     tx_bytes: 7174323033878
     tx_error_bytes: 0
     rx_ucast_packets: 6437174450
     rx_mcast_packets: 0
     rx_bcast_packets: 2992368
     tx_ucast_packets: 7288180680
     tx_mcast_packets: 6
     tx_bcast_packets: 20
     tx_mac_errors: 0
     tx_carrier_errors: 0
     rx_crc_errors: 0
     rx_align_errors: 0
     tx_single_collisions: 0
     tx_multi_collisions: 0
     tx_deferred: 0
     tx_excess_collisions: 0
     tx_late_collisions: 0
     tx_total_collisions: 0
     rx_fragments: 0
     rx_jabbers: 0
     rx_undersize_packets: 0
     rx_oversize_packets: 0
     rx_64_byte_packets: 4075086918
     rx_65_to_127_byte_packets: 1081126012
     rx_128_to_255_byte_packets: 6106330
     rx_256_to_511_byte_packets: 1174390761
     rx_512_to_1023_byte_packets: 86691884
     rx_1024_to_1522_byte_packets: 16764913
     rx_1523_to_9022_byte_packets: 0
     tx_64_byte_packets: 1167805414
     tx_65_to_127_byte_packets: 692803654
     tx_128_to_255_byte_packets: 141127432
     tx_256_to_511_byte_packets: 296572194
     tx_512_to_1023_byte_packets: 534084637
     tx_1024_to_1522_byte_packets: 160820079
     tx_1523_to_9022_byte_packets: 0
     rx_xon_frames: 0
     rx_xoff_frames: 0
     tx_xon_frames: 0
     tx_xoff_frames: 0
     rx_mac_ctrl_frames: 0
     rx_filtered_packets: 9732685
     rx_discards: 0
     rx_fw_discards: 310
我们关注的是error相关的项，所以可以使用这个命令来看error的项:
ethtool -S eth0 |grep error
     rx_error_bytes: 0
     tx_error_bytes: 0
     tx_mac_errors: 0
     tx_carrier_errors: 0
     rx_crc_errors: 0
     rx_align_errors: 0
如果这几项有非零的，就需要注意了。