Towards Propagation of Non-functional Information in Distributed Real-Time Java

Val, Pablo Basanta; García-Valls, Marisol; Estévez-Ayres, Iria

doi:10.1109/isorc.2010.28

Cited by 11 publications

(5 citation statements)

References 22 publications

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“…All these result were obtained on DREQUIEMI [14], [32], [33] (ii) to evaluate the performance on an industrial benchmark; and (iii) to measure the overhead introduced by the distributed event model on the former distributed event model of the DRTSJ.…”

Section: Empirical Results and Evaluationmentioning

confidence: 99%

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A Dual Programming Model for Distributed Real-Time Java

Val

García-Valls

Estévez-Ayres

2011

IEEE Trans. Ind. Inf.

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More-and-more, the use of Java as a programming language for real-time applications is becoming of interest in industrial middleware. This is mainly because it offers advantages for the programmer as reduced deployment times, increased portability, and a number of APIs that may be integrated in large distributed applications. This paper contributes a dual communication model for distributed real-time Java applications. Current efforts in distributed real-time Java [e.g., The Distributed Real Time Specification for Java (DRTSJ)] are mainly focused on remote invocations (R.I.) and set aside other valuable approaches such as distributed events. The proposed model offers two choices for developing distributed real-time Java applications (one based on R.I., and another on distributed events), which may be used to develop applications. Both models include an additional support for asynchronism in communications, a feature that may speed up their communication performance. This paper includes a description for the two models, the changes that are required in the current API to accommodate them, and an empirical evaluation of their performance on a reference implementation.

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Section: Empirical Results and Evaluationmentioning

confidence: 99%

“…One key issue in distributed real-time Java is the type of interface offered to the programmer [11], [14] when designing applications. Both, RT-CORBA and the real-time RMI-based approaches ( [15]- [19]), run on remote invocations (R.I.) and may be used in control-flow applications.…”

Section: Introductionmentioning

confidence: 99%

A Dual Programming Model for Distributed Real-Time Java

Val

García-Valls

Estévez-Ayres

2011

IEEE Trans. Ind. Inf.

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“…Finally, this paper is an extended and refined version of the previously published reference 24 in ISORC'10. The authors extended the previous paper with empirical evidences and experiments that refined the previous model adding new patterns and discarding others from the previous paper.…”

Section: Related Workmentioning

confidence: 99%

“…In this paper, we report our experience on implementing this kind of support in DREQUIEMI 17–28: a real‐time Java framework which is based on RTSJ 29, FTT 30, and RMI and RT‐CORBA technologies. The patterns and empirical performance reported in this paper are useful for different distributed real‐time Java initiatives.…”

Section: Introductionmentioning

confidence: 99%

Non‐functional information transmission patterns for distributed real‐time Java

2011

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SUMMARY Many real‐time systems use preemptive priority‐based scheduling in their internals to guarantee certain real‐time performance. This includes technologies that range from The Real‐Time Specification for Java (RTSJ) to middleware like Real‐Time Common Object Request Broker Architecture (RT‐CORBA), which offers additional models and policies that blend client and server information. This decision eases the integration of real‐time admission tests and dispatching policies in these types of infrastructures. In this paper, we analyze different trade‐offs that emerge from the definition of different propagation models for distributed real‐time Java. The paper covers technological integration aspects as impact on interfaces and other practical issues mainly related to the performance that this model offers to a real‐time application and non‐functional overhead. The contribution described in the paper may help in the development of The Distributed Specification for Java (DRTSJ). Copyright © 2011 John Wiley & Sons, Ltd.

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“…The rest of the paper analyzes the design and performance of ConnectionLess in the context of JRMP and RMI leaving out scheduling parameters transmission. Readers interested in support for scheduling policies are referred to 15, where the authors analyze different end‐to‐end non‐functional information patterns in detail. Section 2 is a background section which introduces details on JRMP headers and messages necessary to understand the rest of the paper; it also details the role of each subprotocol within a remote invocation.…”

Section: Introductionmentioning

confidence: 99%

Fine tuning of the multiplexing facilities of Java's Remote Method Invocation

Val

García-Valls

Estévez-Ayres

et al. 2011

Concurrency and Computation

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SUMMARYThe proliferation of a new generation of distributed real-time embedded systems (DRE) characterized by special restrictions on its storage capacities, its available computation time, and the messages they can send through the network suggests a comprehensive redesign of the current distribution infrastructure in order to tune its performance. In this changing panorama, the paper concerns one of the protocols, Java's Remote Method Protocol (JRMP), used nowadays to interconnect different nodes of a distributed Java system, and explores the cost of integrating an improved protocol-level multiplexing strategy in the context of an end-to-end remote invocation. The new multiplexing strategy helps middleware manage more efficiently unscheduled invocations that appear at runtime generated from a certain client node, especially in cases where preallocation of resources or dimensioning for the worst-case are techniques not plausible. To this end, the paper examines an alternative based on the definition of a new subprotocol, called ConnectionLess, which offers built-in multiplexing facilities for distributed Java applications. The performance of the new subprotocol is compared against the three already defined by JRMP (namely SingleOp, Stream, and Multiplex), taking into consideration parameters such as memory consumed in the Java's virtual machine and end-to-end response times.

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Towards Propagation of Non-functional Information in Distributed Real-Time Java

Cited by 11 publications

References 22 publications

A Dual Programming Model for Distributed Real-Time Java

A Dual Programming Model for Distributed Real-Time Java

Non‐functional information transmission patterns for distributed real‐time Java

Fine tuning of the multiplexing facilities of Java's Remote Method Invocation

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