Multi-Level Energy Effciency for Heterogeneous Data Centers
Author(s)
Kurpicz-Briki, Masha
Editor(s)
Publisher
Neuchâtel : Université de Neuchâtel
Date issued
2017
Number of pages
121 p.
Subjects
virtualized systems energy estimation power estimation energy awareness heterogeneous environments accounting battery modelling
Abstract
The ICT sector has an important impact on global energy consumption (building devices, building networks, operation, air-conditioning and more). Studies show that cloud computing as a whole consumes more energy than entire countries like Germany or India.
Furthermore, recent estimates have shown that the cloud computing sector, and thus the energy consumed by data centers, is still increasing.
The major goal of this thesis is to increase the energy awareness in heterogeneous data centers and thus contribute to the reduction of energy consumption in the ICT sector.
To improve the energy awareness, we need to know how much energy is spent. This is in uenced not only by the infrastructure, but by every single application running in the data center. Unfortunately we cannot measure application energy consumption with physical power meters. Therefore, this thesis contains real-world models to estimate the energy consumption at di erent levels.
This work is organized as a stack with 3 layers: (1) data center, (2) host/virtualization, (3) end user applications. At the data center layer, we first study the impact of different workloads running on heterogeneous machines. In a second step, we develop EPAVE, a model for energy-proportional accounting in VM-based environments.
EPAVE is supported by PowerIndex, a profiling and energy estimation framework. At the host/virtualization layer, we present BitWatts, a middleware toolkit for building software-defined power meters. With BitWatts we cross the boundaries of virtual environments and provide an estimation of the power consumption of applications running within virtual machines.
At the bottom of the stack we look into battery modelling to extend the battery life of mobile devices.
Furthermore, recent estimates have shown that the cloud computing sector, and thus the energy consumed by data centers, is still increasing.
The major goal of this thesis is to increase the energy awareness in heterogeneous data centers and thus contribute to the reduction of energy consumption in the ICT sector.
To improve the energy awareness, we need to know how much energy is spent. This is in uenced not only by the infrastructure, but by every single application running in the data center. Unfortunately we cannot measure application energy consumption with physical power meters. Therefore, this thesis contains real-world models to estimate the energy consumption at di erent levels.
This work is organized as a stack with 3 layers: (1) data center, (2) host/virtualization, (3) end user applications. At the data center layer, we first study the impact of different workloads running on heterogeneous machines. In a second step, we develop EPAVE, a model for energy-proportional accounting in VM-based environments.
EPAVE is supported by PowerIndex, a profiling and energy estimation framework. At the host/virtualization layer, we present BitWatts, a middleware toolkit for building software-defined power meters. With BitWatts we cross the boundaries of virtual environments and provide an estimation of the power consumption of applications running within virtual machines.
At the bottom of the stack we look into battery modelling to extend the battery life of mobile devices.
Notes
Thèse présentée à la Faculté des Sciences pour l'obtention du grade de Docteur ès Sciences
Acceptée sur proposition du jury:
Prof. Pascal Felber, Directeur de thèse
Dr. Anita Sobe, Co-Directrice de thèse
Dr. Sonia Ben Mokhtar
Prof. Rudiger Kapitza
Prof. Peter Kropf
Soutenue le 20.09.2016
Acceptée sur proposition du jury:
Prof. Pascal Felber, Directeur de thèse
Dr. Anita Sobe, Co-Directrice de thèse
Dr. Sonia Ben Mokhtar
Prof. Rudiger Kapitza
Prof. Peter Kropf
Soutenue le 20.09.2016
Publication type
doctoral thesis
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