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2013 International Green Computing Conference Proceedings (2013)
Arlington, VA, USA
June 27, 2013 to June 29, 2013
ISBN: 978-1-4799-0623-9
pp: 1-10
Navin Sharma , University of Massachusetts Amherst, 01003, USA
David Irwin , University of Massachusetts Amherst, 01003, USA
Prashant Shenoy , University of Massachusetts Amherst, 01003, USA
Designing server clusters for intermittent power introduces new possibilities to make them cheaper, greener, and more reliable, including leveraging variable electricity prices to buy more power when it is cheap, increasing the use of clean renewable energy, and capping power at low levels to extend UPS lifetime during blackouts. However, regulating power usage to take advantage of these possibilities is challenging, since applications often access persistent distributed state, where power fluctuations impact I/O performance and data availability. To address the problem, we design and implement BlinkFS, which combines a blinking abstraction with a power-balanced data layout and popularity-based replication/reclamation to optimize I/O throughput and latency as power varies. Our experiments show that BlinkFS outperforms existing approaches, particularly at low steady power levels and high levels of intermittency. As one example of our results, we show that BlinkFS reduces completion time for MapReduce-style jobs by 42% at 50% full power compared to an existing energy-proportional DFS.
Servers, Layout, Power demand, Throughput, Rabbits, Reliability, Electricity

N. Sharma, D. Irwin and P. Shenoy, "A distributed file system for intermittent power," 2013 International Green Computing Conference Proceedings(IGCC), Arlington, VA, USA USA, 2013, pp. 1-10.
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