Enhancing the Robustness of Distributed Real-Time Middleware via End-to-End Utilization Control

A key challenge for distributed real-time and embedded (DRE) middleware is maintaining both system reliability and desired real-time performance in unpredictable environments where system workload and resources may fluctuate significantly. This paper presents FC-ORB, a realtime Object Request Broker (ORB) middleware that employs end-to-end utilization control to handle fluctuations in application workload and system resources. The contributions of this paper are three-fold. First, we present a novel utilization control service that enforces desired CPU utilization bounds on multiple processors by adapting the rates of end-to-end tasks within user-specified ranges. Second, we describe a set of middleware-level mechanisms designed to support end-to-end tasks and distributed multi-processor utilization control in a real-time ORB. Finally, we present extensive experimental results on a Linux testbed. Our results demonstrate that our middleware can maintain desired utilizations in face...

• Type: Conference
• Year: 2005
• Where: RTSS
• Authors: Xiaorui Wang, Chenyang Lu, Xenofon D. Koutsoukos
• Keywords: Applied Computing, End-to-end Tasks, End-to-end Utilization CONtrol, RTSS 2005, Utilization Control