Continuous media communication with dynamic QOS control using ARTS with an FDDI network

Tokuda, Hideyuki; Tobe, Yoshito; Chou, Stephen T.-C.; Moura, J.M.F.

doi:10.1145/144179.144252

Cited by 58 publications

(10 citation statements)

References 13 publications

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“…The QOS problem is another active area of research. Some operating system research in this area focuses on best effort approaches [21] although other research emphasizes guarantees [46,53,78,81,126]. …”

Section: Resource Management Problemsmentioning

confidence: 99%

“…Achieving that goal means QOS requirements must be supported in the operating system as well as the network. This observation was an initial motivation for the work described in this dissertation [76], and other system designers have started to focus on this aspect as well [3,21,46,53,83,102,126]. …”

Section: Qos Backgroundmentioning

confidence: 99%

“…Several research prototype operating systems have applied results from real-time scheduling theory to multimedia applications [3,53,126]. The DASH kernel [3] used an admission control algorithm based on a timeline and then used earliest deadline scheduling to actually sequence the tasks.…”

Section: Research Prototype Real-time Systemsmentioning

confidence: 99%

See 2 more Smart Citations

End-to-End Reservation Services in Real-Time Mach

Rajkumar¹,

Juvva²,

Molano³

et al. 2001

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Pubfic reporting burden {or this collection of information is AGENCY USE mil (Leave blank)2. REPORT DATE SepOl REPORT TYPE AND DATES COVEREDFinal Mar 96 -Mar 99 TITLE AND SUBTITLE END-TO-END RESERVATION SERVICES IN REAL-TIME MACH AUTHOR(S)Raj Rajkumar, K. Juvva, A. Molano, S. Oikawa, C. Lee, J.P. Lehoczky, D.P. Siewiorek, C.W. Mercer and K. Yoshida FUNDING NUMBERSC -F30602-96-1-0160 PE -62301E PR -D649 TA -00 WU -01 PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Carnegie Mellon University Department of Computer Science 5000 Forbes Avenue Pittsburg. PA 15213 Approved for public release; distribution unlimited. PERFORMING ORGANIZATION REPORT NUMBER SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)Defense 12b. DISTRIBUTION CODE ABSTRACT IMaximum 200 words)The RT-Mach microkernel supports a processor reserve abstraction which permits threads to specify their CPU resource requirements. If admitted by the kernel, it guarantees that the requested CPU demand is available to the requestor. This kernel-supported mechanism is designed to be relatively simple based on the microkernel notion that user-level policies can use this simple mechanism to build more complex and powerful schemes. In this report, the focus is on the needs of such user-level policies in the form of a dynamic Quality of Service (QoS) server. Three goals are sought: 1) explore the necessity, sufficiency, power and flexibility of the kernel-supported reserve mechanism, 2) dynamic management of application quality in real-time and multimedia applications, and 3) investigate our ability to predict and achieve end-to-end application delays in realistic distributed real-time and multimedia applications. A two-pronged approach to accomplish these goals is used. First, the processor reserve abstraction in a user-level dynamic quality of service server is applied. A QoS server can allow applications to dynamically adapt in real-time based on system load, user input or application requirements. Second, the dynamic QoS control capabilities to a distributed multimedia application whose threads have to interact and coordinate with each other within and across processor boundaries are applied. A new notion called continuous thread of control is introduced to assist in bundling processor reserves. The experiments show that we can indeed predict and achieve end-to-end delays in a distributed multimedia application. Tables for Thesis 69 LIST OF AUTHOR'S AND PAPER'S SUBJECT TERMS1 AbstractWe consider the problem of OS resource management for real-time and multimedia systems where multiple activities with different timing constraints must be scheduled concurrently. Time on a particular resource is shared among its users and must be globally managed in real-time and multimedia systems. A resource kernel is meant for use in such systems and is defined to be one which provides timely, guaranteed and protected access to system resources. The resource kernel allows applications to specify only their resource demands leaving the kernel to satisfy those demands using hi...

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Section: Resource Management Problemsmentioning

confidence: 99%

Section: Qos Backgroundmentioning

confidence: 99%

See 1 more Smart Citation

End-to-End Reservation Services in Real-Time Mach

Rajkumar¹,

Juvva²,

Molano³

et al. 2001

View full text Add to dashboard Cite

show abstract

“…As an example of the latter, the API provides means to create periodically executable threads, but there is no way to associate this periodicity with the arrival of messages on a Mach port. More recent work by the same group [15] in the ARTS kernel has addressed QoS issues and continuous media but it is still not clear how scheduling and communications interact.…”

Section: Related Workmentioning

confidence: 99%

Extending the Chorus micro-kernel to support continuous media applications

Coulson

Blair

Robin

et al. 1994

Network and Operating System Support for Digital Audio and Video

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Abstract. Currently, popular operating systems are unable to support the end-to-end real-time requirements of distributed continuous media. Furthermore, the integration of continuous media communications software into such systems poses significant challenges. This paper describes a design for distributed multimedia support in the Chorus micro-kernel operating system environment which provides the necessary soft real-time support while simultaneously running conventional applications. Our approach is to extend existing Chorus abstractions to include QoS configurability, connection oriented communications and real-time threads. The design uses the following key concepts: the notion of a flow to represent QoS controlled communication between two application threads, a close integration of communications and thread scheduling and the use of a split level scheduling architecture with kernel and user level threads. The paper shows how our design qualitatively improves performance over existing micro-kernel facilities by reducing the number of protection domain crossings and context switches incurred.

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“…The capacitybased-session-reservation-protocol (CBSRP) [17] supports the reservation of processor bandwidth from the specification of a range of acceptable spatial and temporal resolutions for video playback requests. The resolution parameters are intended only to provide a few classes of service based on resource requirements and not to capture presentation quality requirements completely.…”

mentioning

confidence: 99%

A quality-of-service specification for multimedia presentations

1995

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Abstract. The bandwidth limitations of multimedia systems force trade-offs between presentation-data fidelity and real-time performance. For example, digital video is commonly encoded with lossy compression to reduce bandwidth, and frames may be skipped during playback to maintain synchronization. These trade-offs depend on device performance and physical data representations that are hidden by a database system. If a multimedia database is to support digital video and other continuous media data types, we argue that the database should provide a quality-of-service (QOS) interface to allow application control of presentation timing and information-loss trade-offs. This paper proposes a data model for continuous media that preserves device and physical data independence. We show how to define formal QOS constraints from a specification of ideal presentation outputs. Our definition enables meaningful requests for endto-end service guarantees, while leaving the database system free to optimize resource management. We propose one set of QOS parameters that constitute a complete model for presentation error, and we show how this error model extends the opportunities for resource optimization.

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Continuous media communication with dynamic QOS control using ARTS with an FDDI network

Cited by 58 publications

References 13 publications

End-to-End Reservation Services in Real-Time Mach

End-to-End Reservation Services in Real-Time Mach

Extending the Chorus micro-kernel to support continuous media applications

A quality-of-service specification for multimedia presentations

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