Flow monitoring method and device

The embodiment of the invention provides a traffic monitoring method and device. The traffic monitoring method comprises the following steps: setting a traffic monitoring module in each physical machine in a cloud platform; and for each physical machine, mirroring all the flow passing through the physical machine to a flow monitoring module in the physical machine, and calculating the inlet and outlet flow velocity of at least one target network card through the flow monitoring module. The flow information can be acquired in real time, the response time is reduced, the method is suitable for different cloud platforms, the time for docking a cloud platform flow velocity statistics interface is reduced, and the efficiency is improved. 本发明实施例提供一种流量监控方法及装置，包括：在云平台内的每台物理机中设置流量监控模块；对于每台物理机，将通过物理机的流量全部镜像到所述物理机内的流量监控模块中，通过所述流量监控模块计算至少一个目标网卡的进出口流速。实现了可以实时的获取流量信息，减少响应时间，适用于不同的云平台，减少了对接云平台流速统计的接口的时间，增加效率。