کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
461971 | 696652 | 2010 | 14 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Power optimization for dynamic configuration in heterogeneous web server clusters Power optimization for dynamic configuration in heterogeneous web server clusters](/preview/png/461971.png)
To reduce the environmental impact, it is essential to make data centers green, by turning off servers and tuning their speeds for the instantaneous load offered, that is, determining the dynamic configuration in web server clusters. We model the problem of selecting the servers that will be on and finding their speeds through mixed integer programming; we also show how to combine such solutions with control theory. For proof of concept, we implemented this dynamic configuration scheme in a web server cluster running Linux, with soft real-time requirements and QoS control, in order to guarantee both energy-efficiency and good user experience. In this paper, we show the performance of our scheme compared to other schemes, a comparison of a centralized and a distributed approach for QoS control, and a comparison of schemes for choosing speeds of servers.
Journal: Journal of Systems and Software - Volume 83, Issue 4, April 2010, Pages 585–598