Middleware 2003

ACM/IFIP/USENIX International Middleware Conference

Rio Othon Palace Hotel

Rio de Janeiro, Brazil

16-20 June 2003


Home ] Program ] Registration ] Organization ] Sponsors ] CFP ] Important Dates ] Submissions ] Travel ]


 

Tutorials
Keynote Speech
Posters
Workshops
Work in Progress
Student Travel Grants
Student Volunteer Program


 

 


Website Mirror at the University of São Paulo


Full Paper Abstracts

Flexible and Adaptive QoS Control for Distributed Real-time and Embedded Middleware

Richard Schantz, Joseph Loyall, Craig Rodrigues, Doug Schmidt, Y. Krishnamurthy and
Irfan Pyarali (BBN, Vanderbilt U. and OOM Works)

Computing systems are increasingly distributed, real-time, and embedded, and must operate
under highly unpredictable and change-able conditions. To provide predictable mission-critical
quality of service (QoS) end-to-end, QoS-enabled middleware services and mechanisms have
begun to emerge. However, the current generation of commercial-off-the-shelf middleware lacks
adequate support for ap-plications with stringent QoS requirements in changing, dynamic
environments. This paper provides two contributions to the study of adaptive middleware to control
distributed real-time and embedded (DRE) applications. It first describes how priority- and
reservation-based OS and network QoS management mechanisms can be coupled with
standards-based, off-the-shelf distributed object computing (DOC) middleware to better support
dynamic DRE applications with stringent end-to-end real-time requirements. It then presents the
results of experimentation and validation activities we are conducting to evaluate these combined
OS, network, and middleware capabilities. Our work integrates currently missing low-level resource
control capabilities for end-to-end flows with existing capabilities in adaptive DRE middleware, and
sets the stage for further advances in fine-grained precision man-agement of aggregate flows using
dynamic ad-aptation techniques.

Latest update: 13 June 2003 - Questions and Comments about the Site: fmc@inf.ufg.br