CAJ | 학술논문

针对请求批量到达下基础设施即服务(IaaS)云计算中心性能分析问题，提出基于排队系统的云计算中心分析模型，并获得平稳状态时重要的服务性能参数：阻塞概率、立即服务概率、响应时间百分比、平均队长等。通过数值仿真实验分析了缓冲区和批量大小变化对系统性能的影响。数值仿真结果表明：同等排队强度下，缓冲区的增加对批量到达系统性能的改善优于单个到达系统；每批到达请求数的突发度越大，系统性能越差。
침대청구비량도체하기출설시즉복무(IaaS)운계산중심성능분석문제，제출기우배대계통적운계산중심분석모형，병획득평은상태시중요적복무성능삼수：조새개솔、립즉복무개솔、향응시간백분비、평균대장등。통과수치방진실험분석료완충구화비량대소변화대계통성능적영향。수치방진결과표명：동등배대강도하，완충구적증가대비량도체계통성능적개선우우단개도체계통；매비도체청구수적돌발도월대，계통성능월차。
An analytical model based on queue system is proposed to deal with performance analysis of cloud center under batch arrivals. Some important performance indicators are acquired at steady status;these indicators include blocking probability, instance service probability, percentile response time, average queue length, and so on. The system performance influenced by changing buffer size and batch arrivals size is analyzed through numerical simulation. The numerical simulation results indicate that when buffer size is increased, the system performance with batch arrivals is better than single arrival under the same queuing intensity, and the system performance decreases as the burstiness of the number of every batch arrivals increase.