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WattDB – An Energy -proportional DBMS

This paper presents WattDB, an innovative energy-proportional database management system (DBMS) designed to optimize energy efficiency by balancing power consumption according to system load. Motivated by the need for energy-efficient computing, WattDB employs lightweight nodes and low-power hardware, including Intel Atom processors and mobile hard drives. The architecture features both physical shared-disk and logical shared-nothing designs, offering insights into powering policies, load distribution, and the suitability of various use cases. This work explores multiple hardware configurations to enhance energy efficiency and self-tuning capabilities.

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WattDB – An Energy -proportional DBMS

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  1. WattDB – An Energy-proportional DBMS Volker Höfner, Daniel Schall Databasesand Information Systems Group University of Kaiserslautern, Germany

  2. Motivation • Energyproportionalityisthekeytoenergy-efficientsystems • Energyefficiencyas a firstclasscitizen in DBMS Power [Watt] System load [Percent]

  3. Vision • DBMS balances power consumptionproportionallytosystemload Load Time

  4. Overview • Distributed databasesystem • Light-weightednodes, low-power hardware • Intel Atom, mobile harddrives, 1Gbit-Ethernet • PhysicalShared-Disk, logicalShared-Nothing • Twotypesofnodes • withoutexternalstorage • withharddisksattached

  5. Quests • Policiesforpoweringup / down nodes • Loaddistributionandbalancingamongnodes • Whichusecases fit fortheproposedarchitecture, whichdon‘t? • Alternative hardwareconfigurations • Heterogeneous HW environment • SSDs, other CPUs, GPUs(?) • Energy-efficientself-tuning

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