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37th Annual IEEE Conference on Local Computer Networks
Timed redirection: HTTP request coalescing to reduce energy use of hybrid web servers
Clearwater Beach, FL, USA USA
October 22-October 25
ISBN: 978-1-4673-1565-4
Mehrgan Mostowfi, Department of Computer Science and Engineering, University of South Florida, Tampa, USA
Ken Christensen, Department of Computer Science and Engineering, University of South Florida, Tampa, USA
SangHak Lee, RFIDUSN Convergence Research Center, Korea Electronics Technology Institute, Seongnam, Republic of Korea
Jungmee Yun, RFIDUSN Convergence Research Center, Korea Electronics Technology Institute, Seongnam, Republic of Korea
Network protocols can be designed to enable a reduction in energy use of data servers. We architect a new HTTP timed redirection response for a GET request to be redirected to another server with a given delay. This redirection response can be used in a hybrid web server to coalesce GET requests and allow a server to periodically sleep. In such a hybrid web server, a small low-power ARM-based Assistant receives all incoming HTTP requests and redirects them to a Pentium-class Master server with a delay calculated to allow the Master to sleep in alternating intervals. There is a growing class of applications that are delay tolerant at short time scales for file downloads. Experimental evaluation of timed redirection shows significant savings for the Master server with added delay for some requests which may be acceptable for certain applications.
Index Terms:
Delay,Web servers,Protocols,Plugs,Hybrid power systems,Program processors,performance evaluation,green networks
Citation:
Mehrgan Mostowfi, Ken Christensen, SangHak Lee, Jungmee Yun, "Timed redirection: HTTP request coalescing to reduce energy use of hybrid web servers," lcn, pp.168-171, 37th Annual IEEE Conference on Local Computer Networks, 2012
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