Characterization of Dynamic Resource Consumption for Interference-Aware Consolidation
Nowadays, our daily live concerns the usage of Information Technology, increasingly. As a result, a huge amount of data has to be processed which is outsourced from local devices to data centers. Due to fluctuating demands these are not fully utilized all the time and consume a significant amount of energy while idling. A common approach to avoid unnecessary idle times is to consolidate running services on a subset of machines and switch off the remaining ones. Unfortunately, the services on a single machine interfere with each other due to the competition for shared resources such as caches after the consolidation, which leads to a degradation of performance. Hence, data centers have to trade off between reducing the energy consumption and certain performance criteria defined in the Service Level Agreement. In order to make the trade off in advance, it is necessary to characterize services and quantify the impact to each other after a potential consolidation. Our approach is to use random variables for characterization, which includes the fluctuations of the resource consumptions. Furthermore, we would like to model the interference of services to provide a probability of exceeding a certain performance criterion.
KeywordsDynamic workload Characterization Resource consumption Consolidation Interference Energy-efficient computing HAEC
This work is supported by the German Research Foundation (DFG) within the Collaborative Research Center SFB 912 – HAEC. Special thanks to my supervisor Dr. Waltenegus Dargie and my colleague Frehiwot Melak Arega for their constructive feedback and inspiring discussions.
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