An efficient user task handling mechanism based on dynamic load-balance for workflow systems

  • Authors:

  • Baoyan Song;Ge Yu;Dan Wang;Derong Shen;Guoren Wang

  • Affiliations:

  • Department of Computer Science and Engineering, Northeastern University, Shenyang, China;Department of Computer Science and Engineering, Northeastern University, Shenyang, China;Department of Computer Science and Engineering, Northeastern University, Shenyang, China;Department of Computer Science and Engineering, Northeastern University, Shenyang, China;Department of Computer Science and Engineering, Northeastern University, Shenyang, China

  • Venue:
  • APWeb'03 Proceedings of the 5th Asia-Pacific web conference on Web technologies and applications
  • Year:
  • 2003

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Abstract

User task is one of the major task types of complicated workflow applications. The way how to handle user tasks impacts the performance of a workflow system significantly, which involves many issues such as description of the duty of each participant, calculation of the workload of each participant, and policy to dispatch work items among participants. After analyzing the characteristics of user tasks, this paper proposes an efficient user task handling mechanism based on dynamic load-balance approach. To do this, the organization model and the workload model are defined, the load-balance policies and the workload dispatching algorithms are designed, and the implementing techniques in a prototype WfMS - e_ScopeWork are presented. The performance experiments are made and show that the new mechanism can improve the workflow system performance effectively.