基于排队论的并发查询系统超载模型

Overloaded Model of Concurrent Inquiry System Based on Queuing Theory

在排队论的基础上,根据综合查询系统使用数据库服务器的并发特性,建立了多服务器混合制M/M/S/C排队模型;并考虑服务器的内存有限,在其概率不会超过指定值的约束下建立了优化模型.最后对系统进行仿真,并对仿真结果进行了分析和评价.

Based on queuing system and according to concurrency characteristics of comprehensive inquiry system when adopting database server,multi-server hybrid M/M/S/C queuing model was set up.Taking EMS memory limits of the server into account,optimal model was established under constraint of probability no more than metric.To conclude,the authors evaluate the simulation results after simulation is processed to this system.