NDLI: Modeling Differentiated Services of Multi-Tier Web Applications

Content Provider	IEEE Xplore Digital Library
Author	Yixin Diao Hellerstein, J.L. Parekh, S. Shaikh, H. Surendra, M. Tantawi, A.
Copyright Year	2006
Description	Author affiliation: IBM Thomas J. Watson Research Center, USA (Yixin Diao)
Abstract	In this paper we present a hybrid performance model for modeling differentiated service of multi-tier web applications with per-tier concurrency limits, cross-tier interactions, as well as a work-conserving resource allocation model. The service dependencies between multiple tiers are captured first using a layered queueing model. We then show how to model per-tier concurrency limits and service differentiation between multiple classes while maintaining work conservation at each tier. We use a function approximation approach combined with a coupled processor model. Our model is calibrated from an actual multitier J2EE testbed, and we show the ability of the model to accurately model common performance metrics. Our proposed (layered) model shows 78% improvement in root mean square error over a single-tier machine repair model as well as a tandem queue model. We also demonstrate one application of the model for model-based resource allocation.
Starting Page	314
Ending Page	326
File Size	238841
Page Count	13
File Format	PDF
ISBN	0769525733
ISSN	15267539
DOI	10.1109/MASCOTS.2006.31
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Concurrent computing Web server Yarn Quality of service Context modeling Predictive models Resource management Logic Function approximation Testing
Content Type	Text
Resource Type	Article

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