Polling Mechanism Based on Dynamic Priority Queue in Seismic Profession Cluster Devices Monitoring System

ABSTRACT

This paper investigates the model and polling mechanism in cluster monitoring system for seismic profession. First, we propose a PULL monitoring system model suitable for seismic observation equipment cluster. Second, we modify the general FCFS polling mechanism which limits the polling counts of important nodes in cluster and pose a new polling mechanism of cluster node monitoring system based on dynamic priority queue (DPQ), which divides cluster nodes into dynamic and static queue. Nodes in dynamic queue are sorted by priority. The algorithm and flow chart of the DPQ polling mechanism are given. The experimental results show that, compared with the FCFS polling mechanism, DPQ increases polling counts for important nodes, and have little effect on the performance of central server, so the DPQ polling mechanism is suitable for seismic profession with great differences between cluster nodes.

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