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Grant agreement number: 257414 Funding Scheme: FET Proactive Project Type: Integrated ProjectOctober 17th, 2013
In this report we summarize the key results of the work performed in WP4 with respect to performance awareness of service components (SCs) and service-component ensembles (SCEs). First, we frame the adopted research approach, which focuses on smooth integration of performance awareness in the gen- eral project context by representing awareness as knowledge. Then we present the framework we have developed for convenient, non-intrusive monitoring of Java applications, based on a domain specific instrumentation language, DiSL, which allows monitoring through instrumentation with minimum overhead and no limitation on the nature of the instrumented code. Following, we detail the Stochas- tic Performance Logic (SPL), a powerful formalism that allows reasoning about performance while abstracting away the technicalities related to measurement and noise reduction. We also illustrate our approach towards performance awareness (evaluation and prediction) on an ad-hoc cloud scenario with mobile no
