CAJ | 학술논문

为了增加分布式虚拟环境系统的规模可扩充性,在经典的客户/服务器(C/S)结构中引入P2P的概念,提出了复合分布式虚拟环境结构.理论上对该结构下中心服务器的负载进行了建模分析,并利用仿真试验对该结构进行了试验验证.该结构在系统客户规模增大时,动态地利用客户端资源减弱服务器端的负载,在相同的服务器硬件条件下拓展系统的客户可扩充性,同时中心服务器的存在还保持了C/S结构易于管理的特点.而由于临时服务器退出导致的服务器负载"抖动"问题,可通过更优化的临时服务器选取策略以及控制临时服务器的客户规模来加以减弱.理论分析和仿真试验表明,动态复合结构融合了C/S结构和P2P结构的优点,可有效改善DVE系统的规模扩充性.
위료증가분포식허의배경계통적규모가확충성,재경전적객호/복무기(C/S)결구중인입P2P적개념,제출료복합분포식허의배경결구.이론상대해결구하중심복무기적부재진행료건모분석,병이용방진시험대해결구진행료시험험증.해결구재계통객호규모증대시,동태지이용객호단자원감약복무기단적부재,재상동적복무기경건조건하탁전계통적객호가확충성,동시중심복무기적존재환보지료C/S결구역우관리적특점.이유우림시복무기퇴출도치적복무기부재"두동"문제,가통과경우화적림시복무기선취책략이급공제림시복무기적객호규모래가이감약.이론분석화방진시험표명,동태복합결구융합료C/S결구화P2P결구적우점,가유효개선DVE계통적규모확충성.
A hybrid distributed virtual environment (DVE) architecture is presented by importing a peer-to-peer (P2P) idea into the traditional client/server (C/S) architecture to improve the DVE system's scalability. The mathematical model of the overload of the center server was built and a series of simulation experiments were performed to validate the conclusions. When the client number increases to a certain value, the hybrid architecture can reduce server overload with some special clients (temp servers) selected with a certain heuristic strategy. With this architecture, the DVE system can support more system clients with the same server hardware than the C/S architecture can. The server overload "pulse" phenomena causing by the exiting of the temp server can be resolved by adopting a more optimized temp server selecting strategy and by reducing the child client capability of the temp server. By combining the advantages of the C/S architecture and the P2P architecture, the hybrid DVE architecture can effectively improve the scalability of the DVE system. This is validated by theoretical analysis and simulation experiments.