Linux下查看网络流量信息 proc/net/dev
2020-11-02 14:13 宋海宾 阅读(2909) 评论(0) 编辑 收藏 举报在Linux系统中,系统调用是操作系统提供给应用程序使用操作系统服务的重要接口,但同时也正是通过系统调用机制,操作系统屏蔽了用户直接访问系统内核的可能性。幸运的是Linux提供了LKM机制可以使我们在内核空间工作,在LKM机制中一个重要的组成部分就是proc伪文件系统,它为用户提供了动态操作Linux内核信息的接口,是除系统调用之外另一个重要的Linux内核空间与用户空间交换数据的途径。
而proc/net/dev就是提供给用户读取或更改网络适配器及统计信息的途径。
cat /proc/net/dev
[root@90d77561d95b build]# more /proc/net/dev Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed lo: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ip6tnl0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 tunl0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 eth0: 48674378 33431 0 0 0 0 0 0 765815 13948 0 0 0 0 0 0
- bytes: The total number of bytes of data transmitted or received by the interface.(接口发送或接收的数据的总字节数)
- packets: The total number of packets of data transmitted or received by the interface.(接口发送或接收的数据包总数)
- errs: The total number of transmit or receive errors detected by the device driver.(由设备驱动程序检测到的发送或接收错误的总数)
- drop: The total number of packets dropped by the device driver.(设备驱动程序丢弃的数据包总数)
- fifo: The number of FIFO buffer errors.(FIFO缓冲区错误的数量)
- frame: The number of packet framing errors.(分组帧错误的数量)
- colls: The number of collisions detected on the interface.(接口上检测到的冲突数)
- compressed: The number of compressed packets transmitted or received by the device driver. (This appears to be unused in the 2.2.15 kernel.)(设备驱动程序发送或接收的压缩数据包数)
- carrier: The number of carrier losses detected by the device driver.(由设备驱动程序检测到的载波损耗的数量)
- multicast: The number of multicast frames transmitted or received by the device driver.(设备驱动程序发送或接收的多播帧数)