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- W4244068867 abstract "Estimation techniques have been largely applied to track hidden performance parameters (e.g. service demands) of web based software systems. In this paper we investigate dynamic multiclass modeling of such systems, with variable classes of service, aiming at finding a low complexity model yet with enough accuracy. We propose a combination of clustering algorithm and tracking filter for effective grouping of classes of services. The tracking estimator is based on a layered queuing model with parameters for CPU demands and the user load intensity of each class of service. Clustering uses the K-means algorithm. The target application is autonomic control of web clusters, where changes occur at different rates and amplitudes and at random time instants. Experiments show that the tracking is effective, and reveal good filter settings for different variations." @default.
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- W4244068867 date "2011-09-30" @default.
- W4244068867 modified "2023-10-14" @default.
- W4244068867 title "Abstract only" @default.
- W4244068867 doi "https://doi.org/10.1145/2020976.1958774" @default.
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