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负载的均匀分布是大型电网视频监控系统中实现有效多级级联的关键问题,需要采用一种改进的负载均衡方法来应对该问题。该方法是先判断收到业务请求类型在流媒体服务器采集设备的被请求率达到门限值,然后选取在状态参数低于已设定阈值且与业务请求类型相匹配的流媒体服务器进行请求处理。实验证明该方法不仅避免了由于自身性能的不足而造成的高负载,而且保证了负载均衡的准确性和高效性。
The uniform distribution of loads is a key issue to achieve effective multi-level cascading in large power grid video surveillance systems. An improved load balancing method is needed to deal with this problem. The method first judges that the requested rate of the received service request type in the streaming media server acquisition device reaches the threshold value, and then selects the streaming media server whose status parameter is lower than the set threshold and matches the service request type to perform the request processing . Experiments show that this method not only avoids the high load caused by the lack of performance, but also ensures the accuracy and efficiency of load balancing.