FC-ORB: A robust distributed real-time embedded middleware with 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 real-time 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 fac...

• Type: Journal
• Year: 2007
• Where: JSS
• Authors: Xiaorui Wang, Yingming Chen, Chenyang Lu, Xenofon D. Koutsoukos
• Keywords: JSS 2007, Middleware, Real-time, Utilization Control