Fan-speed-aware scheduling of data intensive jobs
Christine S. Chan, Yanqin Jin, Yen-Kuan Wu, Kenny C. Gross, Kalyan Vaidyanathan, Tajana `imuni Rosing · 2012
As server processor power densities increase, the cost of air cooling also grows resulting from higher fan speeds. Our measurements show that vibrations induced by fans in high-end servers and its rack neighbors cause a dramatic drop in hard disk bandwidth, resulting in a corresponding decrease in application performance. In this paper we quantify the performance and energy cost effects of the fan vibrations and propose a disk performance aware thermal, energy and cooling technique. Results show that we can not only meet thermal constraints, but also improve performance by 1.35x as compared to the conventional methods.