Integrating Security Requirements into Scheduling for Real-Time Applications in Grid Computing

摘要

Real-time scheduling on Grids focuses on achieving high system utilization and guarantee ratio. However, conventional wisdom in dynamic scheduling ignores security requirements raised by real-time applications. In order to factoring quality of security in real-time applications running on Grid, real-time scheduling algorithms need to be security-aware in nature. In this paper we identify the open issues and challenges involved in designing and implementing security-aware real-time scheduling schemes, which are intended to consider both security and realtime constraints for Grids. In particular, three approaches towards achieving high quality of security and schedulability are described: the uniprocessor real-time scheduling algorithm with security awareness (EDFjOPTS), security overhead models, security-aware real-time scheduling for heterogeneous distributed systems like Grids. Simulation results show that our EDF_OPTS algorithm significantly improves system performance in terms of quality of security and schedulability over three baseline algorithms under a wide range of workload characteristics.