【摘要】 分布式并行数据库系统以其高性能倍受关注,高效合理的内部通信系统是分布式并行数据库系统极其关键的组成部分.为此,在分析现有多种通信模型的基础上,建立了一种基于调度的多线程通信模型,该通信模型采用多个线程收发数据,并根据节点运行情况动态调度接收线程和发送线程,既保证了内部通信的通信性能,又不会使系统的对外处理能力成为新的瓶颈.该模型已被成功应用于成都市电子政务的系统平台———分布式并行数据库系统DPSQL.更多还原

【Abstract】 Distributed and parallel database system,due to its high performance, gains more and more attention. High efficient and reasonable interior communication system is very important to it.After current various communication models were analysed,this paper comes up with a multithreaded-communication-model based on scheduling.The model has multiple threads send and receive message.It not only guarantees high efficiency of communication,but also optimizes performance of whole system by scheduling thread.The model has been successfully applied to distributed and parallel database system(DPSQL),which acts as system platform of electronical government affair in Chendu City.更多还原