Comparative Analysis of Workflow Scheduling Policies in Cloud Platforms

Cloud computing platforms are most suitable platforms for assessment of performance characteristics of any scheduling algorithm. Tasks in cloud platforms are represented as either set of independent tasks or workflows. Workflows technology imitates the industrial flows in digital forms. The optimal scheduling of tasks in a workflow may help in resequencing the activities in an industry. This paper utilized WorkflowSim simulator which extends CloudSim toolkit by incorporating workflow management through workflow engine, workflow planner, and workflow scheduler. Several modifications led to incorporation of overhead and failure layers into WorkflowSim. This paper presents a review of scheduling policies supported by WorkflowSim. An exhaustive review presents strength and weakness of various scheduling policies using varied task types.