Distributed System Survivability Evaluation Based on the Correlations Analysis of QoS

Quality of service (QoS) as the manifestation of system viability is analyzed in this paper. A hierarchical evaluation model for the distributed system survivability based on the attributes association analysis of QoS is proposed. The calculation method for the correlations of QoS and the quantifiable evolution method for key attributes and distributed system survivability are given. The evaluating situation of survivability of three kinds of key services during one week is observed and studied by experiments. The comparative analysis with other algorithms is also presented.