New methods for more energy-efficient internet services

January 19, 2016 by Ingrid Söderbergh

The billions of people using internet services worldwide require huge data centres resulting in an enormous energy consumption. In her doctoral dissertation at Umeå University, Mina Sedaghat has developed techniques and algorithms to manage and schedule the resources in these large data centres at a lesser cost, more efficiently, more reliably and with a lower environmental impact.

Korean pop-video, Gangnam Style, available on YouTube has had 2.5 billion viewers, which results in a of more than 400 GWh. If, in worst case, the electricity to serve such a demand is generated by diesel, it would mean that more than 250,000 tons of CO2 would be produced, which is equivalent to over 100,000 cars per year.

These examples are not uncommon. Millions of people are using different services such as Google, Facebook, Twitter, and Instagram, every day. This increase in internet usage and the information generated by nearly one billion people entails large data centres with row after row of , requiring huge amount of space, electricity and cooling.

The dissertation introduces methods and techniques to efficiently use the servers in the data centres, so that load can be served with fewer resources.

What technology can be used?

"It could be optimised scheduling systems packing several software components into a few servers in a way that makes full use of processors, memory, bandwidth, network capacity and other resources. In this way, energy efficiency can be improved reducing the negative , and at the same time reducing operational costs," says Mina Sedaghat.

Explore further: New method to predict the workload for online services

More information: The dissertation is available online: urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-112467

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gkam
1 / 5 (2) Jan 20, 2016
These guys had so much money they were insulated from the costs of power. For years I lectured them at their conferences about efficiency, and wrote up some alternatives to the way they did their technical architecture, such as converting most of their battery rooms to fuel cells, with a main reformer and a natural gas connection. Gas connections are not as exposed to the elements as power lines, and with a reformer on the premises, can produce the DC required by the facility directly instead of multiple stages of points of potential failure.

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