In order to improve the efficiency of virtual test systems, to ensure load balancing, to enhance real - time performance and reliability of system, we research and design a real -time task scheduling service. This service, which is based on the node scheduling algorithm and migration strategies, provides a dynamical and reliable load balancing mechanism. It can allocate and schedule the tasks of the virtual test system rationally. Some results of the experiment show that the scheduling service in a virtual test system can keep a load balance of each node dynamically, reduce the response time of the tasks and greatly improve the real -time performance and reliability of the system, which meets the requirement of improving the performance of the virtual test system.%为了提高虚拟试验系统的执行效率,保证系统负载平衡,提高系统的实时性和可靠性,研究并设计了一种实时任务调度服务;该调度服务以节点任务调度算法和迁移策略为基础,提供了一种动态的、可靠的任务分配策略和负载均衡机制,使虚拟试验的任务得到了合理分配和调度;以节点容纳度作为试验参数进行多次试验,试验结果表明:该调度服务在虚拟试验系统中能够动态维持各个节点的负载平衡,降低了任务平均响应时间,提高系统的实时性和可靠性,达到了提高虚拟试验系统整体性能的目的.
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