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 TitleDate AddedCompany
whitepaper Polus: Growing Storage QoS Management Beyond a "Four-Year Old Kid"2008-01-01 IBM
  Policy-based storage management has been advertised as the silver bullet to overcome the complexity that limits the amount of storage that can be managed by system administrators. Key to this approach are: a mechanism to specify Quality of Service (QoS) goals; a canonical virtual model of storage devices and operations; and the mapping of the high level QoS goals to low level storage device actions. This paper proposes the Polus framework which specifically addresses this open problem. Polus removes the need for system administrators to write code that maps the QoS goals to low level system actions.

Tags: Management		   
whitepaper QoS Routing for P2P Networking2008-01-01 Helsinki University of Technology
  "Peer-to-peer" concept is the core of today's Internet but it will become even greater factor in the future Internet. P2P-networks grow on their own by flooding and updating the information using peer-to-peer concept. The peers (storage and computing power) are used to make the routing and data-searching faster. This paper focuses to QoS routing and to P2P networking. Techniques like Resource Reservation (RSVP), Differential Services (DiffServ) and MultiProtocol Label Switching (MPLS) are briefly introduced.

Tags: Network Technologies, Network Management		   
whitepaper A Peer-to-Peer On-Demand Streaming Service and Its Performance Evaluation2008-01-01 University of Massachusetts
  Providing on-demand video streaming service over the Internet is a challenging task. This paper proposes DirectStream, a directory based peer-to-peer video streaming service that efficiently and cost-effectively provides video on-demand service with VCR operation support. The paper analytically and experimentally examines the system performance, and show that the proposed scheme can significantly reduce the workload posed on the server, and that it scales extremely well as the popularity of the video increases even if participating clients behave non-cooperatively. The paper proposes a QoS parent selection algorithm to construct the appropriate peer-to-peer networks, and discuss how to provide continuous playback in the face of clients' early departures.

Tags: Network Technologies, Internet and Web		   
whitepaper Model-Driven Techniques for Evaluating the QoS of Middleware Configurations for DRE Systems2008-01-01 Vanderbilt University
  This paper provides two contributions to R&D on Model-Driven Development (MDD) techniques that help codify the impact of middleware configurations on end-to-end Distributed Real-time and Embedded (DRE) system Quality of Service (QoS). First, they describe how MDD techniques can help select middleware configuration parameters that satisfy key functional and QoS requirements of DRE systems. Second, they apply the MDD techniques to empirically evaluate the end-to-end QoS of representative DRE systems in the avionics and industrial manufacturing domains. Their results show how MDD techniques significantly enhance conventional ad hoc processes used by developers to configure middleware that meets the QoS needs of DRE systems.

Tags: Software Development Tools, Components		   
whitepaper The Design and Performance of Configurable Component Middleware for Distributed Real-Time and Embedded Systems2008-01-01 Washington University in St. Louis
  This paper makes three contributions to research on QoS-enabled component middleware for DRE systems in the context of the Component-Integrated ACE ORB (CIAO). First, it describes the design of CIAO's static component configuration mechanisms, which enhance configurability by avoiding features that are not supported by key real-time platforms, while reducing run-time overhead and footprint. Second, it compares the performance of dynamic and static configuration mechanisms in CIAO to help guide the selection of suitable configuration mechanisms based on specific requirements of each DRE system. Third, it presents an empirical comparison of CIAO's static configuration mechanisms to the static configuration mechanisms in Boeing's PRISM avionics component middleware solution.

Tags: Network Management, Components		   
whitepaper Context-Specific Middleware Specialization Techniques for Optimizing Software Product-Line Architectures2008-01-01 Association for Computing Machinery
  Product-Line Architectures (PLA)s are an emerging paradigm for developing software families for Distributed Real-time and Embedded (DRE) systems by customizing reusable artifacts, rather than handcrafting software from scratch. This paper provides many contributions to the study of middleware specialization techniques for PLA-based DRE systems. First, they identify key dimensions of generality in standard middleware, including generality stemming from framework implementations, deployment platforms, and middleware standards. Second, they illustrate how context-specific specialization techniques can be automated and applied to tailor standard middleware to better meet the QoS needs of different PLA product variants. Third, they quantify the benefits of applying automated tools to specialize a standard Real-time CORBA middleware implementation.

Tags: Components, Network Management		   
whitepaper A Control-Based Middleware Framework for Quality of Service Adaptations2008-01-01 University of Illinois
  In heterogeneous environments with performance variations present, multiple applications compete and share a limited amount of system resources, and suffer from variations in resource availability. These complex applications are desired to adapt themselves and to adjust their resource demands dynamically. This paper presents a novel Middleware Control Framework to enhance the effectiveness of QoS adaptation decisions by dynamic control and reconfiguration of internal parameters and functionalities of a distributed multimedia application. The objective is to satisfy both system-wide properties (such as fairness among concurrent applications) and application-specific requirements (such as preserving the critical performance criteria).

Tags: Network Management		   
whitepaper QoS-Aware Middleware for Web Services Composition2008-01-01 IBM
  The paradigmatic shift from a Web of manual interactions to a Web of programmatic interactions driven by Web services is creating unprecedented opportunities for the formation of online Business-to-Business (B2B) collaborations. Since many available Web services provide overlapping or identical functionality, albeit with different Quality of Service (QoS), a choice needs to be made to determine which services are to participate in a given composite service. This paper presents a middleware platform which addresses the issue of selecting Web services for the purpose of their composition in a way that maximizes user satisfaction expressed as utility functions over QoS attributes, while satisfying the constraints set by the user and by the structure of the composite service.

Tags: Internet and Web, Network Management		   
whitepaper Integrated Adaptive QoS Management in Middleware: An Empirical Case Study2008-01-01 Washington University in St. Louis
  Distributed Real-time and Embedded (DRE) systems in which application requirements and environmental conditions may not be known a priori - or which may vary at run-time - can benefit from an adaptive approach to management of Quality-of-Service (QoS) to meet key constraints, such as end-to-end timeliness. This paper offers two contributions to the study of adaptive DRE computing systems, a case study of the integration of multiple middleware QoS management technologies to manage quality and timeliness of imagery adaptively within a representative DRE avionics system and empirical results and analysis of the impact of that integration on key trade-offs between timeliness and image quality in that system.

Tags: Network Management, Software Development Tools		   
whitepaper Resilient Trust Management for Web Service Integration2008-01-01 Georgia Institute of Technology
  In a distributed web service integration environment, the selection of web services should be based on their reputation and Quality-of-Service (QoS). Various trust models for web services have been proposed to evaluate the reputation of web services/service providers. This paper presents an attack resilient distributed trust management system in a web service management environment. The proposed attack resilient trust model uses two vectors to capture the behavior and the trustworthiness of a web service/service provider based on their analysis on the possible attacks against the trust models. They also present a set of experiments that show the effectiveness of their trust model in detecting malicious behavior of service providers.

Tags: Internet and Web