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MSR 2019
Sun 26 - Mon 27 May 2019 Montreal, QC, Canada
co-located with ICSE 2019
Sun 26 May 2019 14:45 - 15:00 at Centre-Ville - Session VI: Energy and Economics Chair(s): Maleknaz Nayebi

Over the last years, increasing attention has been given to creating energy-efficient software systems. However, developers still lack the knowledge and the tools to support them in that task. In this work, we explore our vision that energy consumption non-specialists can build software that consumes less energy by alternating, at development time, between third-party, readily available, diversely-designed pieces of software, without increasing the development complexity. To support our vision, we propose an approach for energy-aware development that combines the construction of application-independent energy profiles of Java collections and static analysis to produce an estimate of in which ways and how intensively a system employs these collections. By combining these two pieces of information, it is possible to produce energy-saving recommendations for alternative collection implementations to be used in different parts of the system. We implement this approach in a tool named CT+ that works with both desktop and mobile Java systems, and is capable of analyzing 40 different collection implementations of lists, maps, and sets. We applied CT+ to twelve software systems: two mobile-based, seven desktop-based, and three that can run in both environments. Our evaluation infrastructure involved a high-end server, a notebook, and three mobile devices. When applying the (mostly trivial) recommendations, we achieved up to 17.34% reduction in energy consumption just by replacing collection implementations. Even for a real world, mature, highly-optimized system such as Xalan, CT+ could achieve a 5.81% reduction in energy consumption. Our results indicate that some widely used collections, e.g., ArrayList, HashMap, and HashTable, are not energy-efficient and sometimes should be avoided when energy consumption is a major concern.

Sun 26 May
Times are displayed in time zone: Eastern Time (US & Canada) change

14:45 - 15:30: Session VI: Energy and EconomicsMSR 2019 Paper Presentations / MSR 2019 Data Showcase / MSR 2019 Technical Papers at Centre-Ville
Chair(s): Maleknaz NayebiPolytechnique Montréal
14:45 - 15:00
Full-paper
Recommending Energy-Efficient Java Collections
MSR 2019 Technical Papers
Pre-print
15:01 - 15:07
Talk
GreenHub Farmer: Real-world data for Android Energy Mining
MSR 2019 Data Showcase
Rui PereiraHASLab/INESC TEC & Universidade do Minho & Universidade da Beira Interior, Marco CoutoHASLab/INESC TEC & Universidade do Minho, João Paulo FernandesRelease/LISP, CISUC, Bruno Cabral, Hugo MatalongaUniversity of Minho, Simão Melo de Sousa, Fernando CastorFederal University of Pernambuco (UFPE)
Pre-print
15:08 - 15:14
Talk
GreenSource: a large-scale collection of Android code, tests and energy metrics
MSR 2019 Data Showcase
Rui RuaHASLab/INESC TEC & Universidade do Minho, Marco CoutoHASLab/INESC TEC & Universidade do Minho, João SaraivaUniversity of Minho, Portugal
15:15 - 15:21
Short-paper
Striking Gold in Software Repositories? An Econometric Study of Cryptocurrencies on GitHub
MSR 2019 Technical Papers
Asher TrockmanUniversity of Evansville, Rijnard van TonderCarnegie Mellon University, Bogdan VasilescuCarnegie Mellon University
Pre-print
15:22 - 15:28
Talk
Panel Data of Cryptocurrency Development Activity on GitHub
MSR 2019 Data Showcase
Rijnard van TonderCarnegie Mellon University, Asher TrockmanUniversity of Evansville, Claire Le GouesCarnegie Mellon University