Download e-book for iPad: Communications Infrastructure. Systems and Applications in by John Hand (auth.), Rashid Mehmood, Eduardo Cerqueira,

By John Hand (auth.), Rashid Mehmood, Eduardo Cerqueira, Radoslaw Piesiewicz, Imrich Chlamtac (eds.)

ISBN-10: 3642112838

ISBN-13: 9783642112836

ISBN-10: 3642112846

ISBN-13: 9783642112843

This publication constitutes the lawsuits of the 1st foreign ICST convention on Communications Infrastructure, structures and functions, EuropeComm 2009, held in London, uk in August 2009.

The 15 complete papers and six work-in-progress papers have been chosen from fifty two submissions.
Further carefull chosen specialists of their fields have been invited and submitted 7 extra invited papers.

EuropeComm 2009 introduced jointly determination makers from the european fee, most sensible researchers and executives to debate instructions of communications examine and improvement in Europe. The papers specialize in quite a lot of destiny web infrastructure, clever transportation platforms, healthcare and transportation sectors, in addition to open versions and innovation processes.

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Read or Download Communications Infrastructure. Systems and Applications in Europe: First International ICST Conference, EuropeComm 2009, London, UK, August 11-13, 2009, Revised Selected Papers PDF

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Additional resources for Communications Infrastructure. Systems and Applications in Europe: First International ICST Conference, EuropeComm 2009, London, UK, August 11-13, 2009, Revised Selected Papers

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Thread Pool: The framework transfers each new asynchronous invocation request to a new thread. Considering the overhead of spawning a new thread on each call, we optimized the interaction with the thread package and switched to using a ThreadPool Enhancing Java RMI with Asynchrony through Reflection 31 Fig. 3. Thread Pooling Speedup which creates new threads as needed, but reuses previously created threads when they are available. Fig. 3. displays the performance gain in invocation response time, which becomes evident especially with high number of simultaneous requests.

Performance Results: We have conducted experiments in order to measure the performance of the framework and compare it with Java RMI. The test computer is Fig. 4. Reflection speedup 32 O. Akın and N. 0_11-b0. 70GHz, 512 MB of RAM. 0_11-b03, Windows XP Professional OS. Table 1 displays the execution cost for an asynchronous invocation of a remote method with the signature ‘int add(int lhs, int rhs)’ that simply adds the two input parameters and returns the result. For each invocation type, five test runs were executed and their average is reported.

27 called a delegate in the our framework, is activated from a thread pool with parameters that include invocation details such as the remote object, method name, and parameters. invoke (_remoteObject,_parameters);) which performs a standard RMI for the requested method over the client stub. This phase involves standard RMI activity following its parameter passing semantics. The server stub passes the call request with its parameters to the server stub, which in turn, executes the method call on the remote object and returns the results back to the client stub over the network.

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Communications Infrastructure. Systems and Applications in Europe: First International ICST Conference, EuropeComm 2009, London, UK, August 11-13, 2009, Revised Selected Papers by John Hand (auth.), Rashid Mehmood, Eduardo Cerqueira, Radoslaw Piesiewicz, Imrich Chlamtac (eds.)


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