关键词: 分布式虚拟环境, 间距一致性, 响应能力

Abstract:

The interval consistency problem of continuous models is the key issue to determine system functionality and effectiveness in the DVE systems. The existing methods often utilize the strategy that the sender nodes are responsible for choosing the event delay, and impose a restriction relationship on the all receiver nodes, which hampers the process to optimize the system responsiveness. In this paper, we propose a novel interval consistency control method based on estimating the network delay. The method utilizes the strategy that the receiver nodes are responsible for choosing the event delay to relieve the restriction relationship among all the receiver nodes. Moreover, the time stamp consistency and interval consistency are kept simultaneously due to the same delay strategy for all local events and remote events. For adjusting the parameters properly during the run time, we propose a Btree based the network delay estimation method, which adjusts the delay parameter periodically and ensure the effectiveness of our method. The experimental results show that our method can provide interval consistency for all the nodes and improve the overall system performance effectively.

Key words: distributed virtual environment;interval consistency;responsiveness