A adaptive scheduler for QoS support in Compose|Q
- 25 June 2003
Abstract
In this paper, we present the design and implementation. details of a flexible reflective scheduling framework, that. supports conjunctive scheduling of both tasks and messages within a distributed message based environment. In future, distributed environments will need to fine tune their systems to provide diverse services, oftentimes implementing dissimilar policies and functionality. We understand that future distributed systems would require their schedulers to be tailor-made or customizable to suit the. diverse workloads at different times. The framework is therefore fashioned to provide both coarse and fine grained scheduling, for better tunability and improved performance. Though this model is designed to work with any thread based system, we have investigated the applicability of these concepts on actors (active objects) within the Compose|Q framework. Scheduling of soft real time tasks are handled by the framework to conform to guarantees, even in the presence of normal time-sharing tasks. We expect that the proposed solution would be scalable while providing higher flexibility than simple task based scheduling Author(s) Mohapatra, S. California Univ., Irvine, CA, USA Venkatasubmanian, N.Keywords
This publication has 11 references indexed in Scilit:
- Modular real-time resource management in the Rialto operating systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Formalizing meta-programming techniques to reconcile heterogeneous scheduling disciplines in open distributed real-time systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- The design, implementation and evaluation of SMARTPublished by Association for Computing Machinery (ACM) ,1997
- CPU inheritance schedulingPublished by Association for Computing Machinery (ACM) ,1996
- Adaptive rate-controlled scheduling for multimedia applicationsPublished by Association for Computing Machinery (ACM) ,1996
- The design and implementation of an operating system to support distributed multimedia applicationsIEEE Journal on Selected Areas in Communications, 1996
- ExokernelPublished by Association for Computing Machinery (ACM) ,1995
- Processor capacity reserves: operating system support for multimedia applicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1994
- Scheduler activationsPublished by Association for Computing Machinery (ACM) ,1991
- Scheduling Algorithms for Multiprogramming in a Hard-Real-Time EnvironmentJournal of the ACM, 1973