Dynamic Load Balancing Method for Parallel Database Engine on Heterogeneous Computing Resources

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  • 共有ストレージ型並列データベースエンジンにおける演算資源非均質性の影響を軽減可能とする動的負荷分散手法

Abstract

In parallel database engines running on heterogeneous computing resources, if works are assigned to nodes equally, processing time on nodes with lower capacity limits overall query execution time, and consequently, the capacity of rest nodes cannot be utilized fully. The public cloud environment, which has been widely used, provides virtualized computing resources to users via network. However, it is somtimes impossible to allocate homogeneous computing resources in the public cloud. In that case, users must use heterogeneous computing resources which have different capacity. To improve utilization in parallel database engine using computing resources on the public cloud environment, load on each node should be balanced by assigning works to nodes according to its capacity. In this paper, we propose a method which balances among nodes by assigning works to nodes corresponding its capacity, and clarify the effectiveness of the proposed method by experimental evaluation using the public cloud environment.

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