摘要： 为满足军用计算机系统高可用需求,结合多系统板卡并发处理架构,设计并实现一种基于CPCI总线高可用热插拔技术。通过在系统板卡上部署总线控制模块来控制处理器与PCI总线的连接与断开,并在PCI主设备出现故障时,通过主设备选取算法选择备用板卡作为PCI主设备。实验结果表明,该技术对系统启动时间和内存占用的影响较小,能满足军用计算机系统实时、高效的处理和高可用等方面要求。
关键词:
CPCI总线,
热插拔,
高可用,
主设备切换,
总线仲裁
Abstract: To meet the demand for high availability of military computer systems,combined with the analysis of the concurrent processing architecture among the multiple system boards,a CPCI-based high availability hot swap technology is designed and implemented.The bus control modules are deployed on the system boards to manage the connection and disconnection between on-board processors and PCI buses.Once some failures are detected within the current PCI master device,the bus control module chooses some standby system board as the next PCI master device using the PCI master device selection algorithm.Experimental results show that this technology has little impact on the system startup time and memory occupation,and it meets the real-time,efficient processing and high availability requirements of military computer systems.
Key words:
CPCI bus,
hot swap,
high availability,
master device switch,
bus arbitration
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