一种基于延迟变化率的网络延迟自适应采样算法  

Adaptive Sample Algorithm of Network Time-Delay

作　　者：温辉敏[1] 魏恒义[1] 曾明[1] 李霞丽[1] 

机构地区：[1]西安交通大学计算机科学与技术系,西安710049

出　　处：《微电子学与计算机》2003年第11期8-11,共4页Microelectronics & Computer

基　　金：国家863基金资助项目(2001AA112111)

摘　　要：文章提出了一种测量网络延迟的自适应采样算法,针对周期性延迟采样不能很好地根据当前网络状态调整采样频率这一缺点,自适应采样算法以延迟变化率作为动态控制采样频率的主要指标。通过对自适应和周期性采样算法实际测量中测得的数据进行比较分析,自适应算法能根据网络当前状态调整采样频率,不仅能有效地跟踪到延迟突变,而且还可以从总体上大大减少采样工作量。Network time-delay is an important characte -ristic of network QoS and network behavior model. The previous period sample algorithm can't trace the burst of network delay very good, So bring out a new adaptive algorithm based on the change ratio of delay. In order to verify algorithmic validity and feasibility, a actual sample process was performed. Through the analysis and comparison of the data sampled in period algorithm and in adaptive algorithm, we find that the new adaptive algorithm can trace the burst of network delay better,on the other hand it also can reduce whole workload rapidly.

关 键 词：网络延迟 自适应采样算法 服务质量 延迟变化率 网络性能 数据包 计算机网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]