Timely Reliability Analysis of Virtual Machines Considering Migration and Recovery in an Edge Server.

ABSTRACT: For the edge computing network, whether the end-to-end delay satisfies the delay constraint of the task is critical, especially for delay-sensitive tasks. Virtual machine (VM) migration improves the robustness of the network, whereas it also causes service downtime and increases the end-to-end delay. To study the influence of failure, migration, and recovery of VMs, we define three states for the VMs in an edge server and build a continuous-time Markov chain (CTMC). Then, we develop a matrix-geometric method and a first passage time method to obtain the VMs timely reliability (VTR) and the end-to-end timely reliability (ETR). The numerical results are verified by simulation based on OMNeT++. Results show that VTR is a monotonic function of the migration rate and the number of VMs. However,

SUBMITTER: Liu K 

PROVIDER: S-EPMC7795631 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature