Title :
Using multiple feedback loops for object profiling, scheduling and migration in soft real-time distributed object systems
Author :
Kalogeraki, V. ; Melliar-Smith, P.M. ; Moser, L.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
Complex soft real time distributed object systems require object profiling, scheduling and migration algorithms to respond to transient changes in the load or in the availability of the resources. We have developed a resource management system for a soft real time distributed object system that is based on a three level feedback loop which employs a profiling algorithm that monitors the usage of the resources, a least laxity scheduling algorithm that schedules the tasks, and hot spot and cooling algorithms that allocate and migrate objects to balance the load on the resources. The resource management system consists of a single (but possibly replicated and distributed) resource manager, and profilers and schedulers located on each of the processors in the distributed system
Keywords :
distributed object management; program diagnostics; real-time systems; resource allocation; scheduling; cooling algorithms; distributed system; least laxity scheduling algorithm; migration algorithms; multiple feedback loops; object migration; object profiling; profilers; profiling algorithm; resource management system; resource manager; resource usage monitoring; schedulers; scheduling; soft real time distributed object system; soft real time distributed object systems; three level feedback loop; transient changes; Availability; Control systems; Electrical capacitance tomography; Fault tolerance; Feedback loop; Monitoring; Processor scheduling; Real time systems; Resource management; Scheduling algorithm;
Conference_Titel :
Object-Oriented Real-Time Distributed Computing, 1999. (ISORC '99) Proceedings. 2nd IEEE International Symposium on
Conference_Location :
Saint-Malo
Print_ISBN :
0-7695-0207-5
DOI :
10.1109/ISORC.1999.776394
