The Application Of Linux Cluster System Based On The Load Balancing Algorithm In Webgis

With the popularity of computer networks and the rapid growth in the number of network users, the traditional large servers difficult to meet the large number of users with high concurrent access requirements, and cluster technology in order to solve the problem. Since the cluster system has many advantages, such as the strong scalability, high availability, so widely enterprise customers. Load balancing is a key component of the cluster system is a key factor in improving the performance of the cluster, this study of the Linux cluster load balancing and load balancing scheduling algorithm. This paper describes the development of the current cluster, applications, cluster measurements, load balancing technology, then introduced the general architecture of the cluster, the software hierarchy, focusing on analysis of the existing scheduling algorithms and scheduling based on IP layer mode. LVS cluster scheduling algorithm is still no feedback node load scheduling information for a small amount of user access. Concurrent access is still high for large-scale low efficiency, stability is rather poor, and poor availability. Finally, the analysis of the original scheduling algorithm based on the shortcomings, this paper presents a new design for webgis scheduling algorithm, which is really the server through the collection of the real load information, and by setting a certain threshold, to a reasonable schedule task, to achieve maximum load balancing. In this paper, design a set of webgis cluster server systems, including cluster architecture, cluster monitoring, laid webgis environment, and application of new scheduling algorithms, high-concurrency testing using Loadrunner, multi-user access, and through analysis of test results, the new algorithm derived good or bad.