Building Application Profiles to Allow a Better Usage of the Renewable Energies in Data Centres

Data centres are powerful and power-hungry facilities which aim at hosting ICT services. The current trend is to, on the one hand, try to reduce the overall consumption of a data centre, and on the other hand to prioritize the utilization of renewable energies over brown energies. Renewable energies tend to be very variable in time (e.g. solar energy), and thus renewable energy aware algorithms tries to schedule the applications running in the data centres accordingly. However, one of the main problems is that most of the time very little information is known about the applications running in data centres. More specifically, we need to have more information about the current and planned workload of an application, and the tolerance of that application to have its workload rescheduled. In this paper, we present a work in progress on Plug4Green, a flexible VM manager able to reduce energy consumption in data centres. We extend Plug4Green with the second goal of increasing the usage of renewable energy in data centres. This includes the development of specific application profiles, and a new optimization technique.