摘要
电网调控系统通过广播/组播方式同步应用状态,传统的开源容器网络无法支持,且传统开源容器体积较大,导致应用迁移和启动耗时长,不能直接用于电网实时调控系统。同时开源容器不支持网络带宽限制,不满足实时系统的可靠性要求。通过研究现有容器技术的实现原理,提出一种轻量级的容器技术,能满足电网实时调控系统的数据同步要求。通过研究虚拟网桥技术实现了跨物理宿主机的广播/组播通信;结合Linux流量控制内核技术和控制组内核技术实现容器网络带宽限制;并通过对私有数据的封装降低容器体积,实现轻量化。最后通过测试验证,该轻量级容器在支持组播/广播通信的同时具备带宽限制的功能,且体积小,迁移快速方便,启动性能上优于传统容器。
The power grid dispatching and control system implements broadcast or multicast to synchronize the application state,which is not supported by the network technology of traditional open source container.And the open source container is too large to be directly used in real-time system.At the same time,the open source container does not support the network bandwidth limitation and does not meet the reliability requirements of the real-time system.By studying the implementation principle of the existing container technology,a lightweight container technology is proposed,which can meet the data synchronization requirements of the power grid real-time control system.Through the research of virtual bridge technology,the broadcast/multicast communication across physical host is realized.The bandwidth limitation of container network is realized by combining Linux flow control kernel technology and Control Group technology,and the size of container is reduced by encapsulating private data.Finally,the test shows that the lightweight container has the function of bandwidth limitation while supporting multicast/broadcast communication,and it is small in size,fast and convenient in migration,and better in startup performance than the traditional container.
作者
顾雯轩
高原
顾文杰
邹庆
董子奇
GU Wen-xuan;GAO Yuan;GU Wen-jie;ZOU Qing;DONG Zi-qi(NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;NARI Technology Development Co.,Ltd.,Nanjing 211106,China;State Key Laboratory of Smart Grid Protection and Control,Nanjing 211106,China)
出处
《计算机技术与发展》
2021年第2期116-121,共6页
Computer Technology and Development
基金
国家重点研发计划项目(2017YFB0902600)
国家电网公司科技项目(5700-201955450A)。
关键词
轻量级容器
广播/组播
内核技术
带宽限制
虚拟网桥网卡
lightweight container
broadcast/multicast
kernel technology
bandwidth limitation
virtual network bridge and network card
