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Author Yixin Diao ♦ Hellerstein, J.L. ♦ Parekh, S. ♦ Shaikh, H. ♦ Surendra, M.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2006
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Quality of service ♦ Web server ♦ Actuators ♦ Network servers ♦ Databases ♦ Web and internet services ♦ Computer architecture ♦ Routing ♦ Yarn ♦ Delay
Abstract The need for service differentiation in Internet services has motivated interest in controlling multi-tier web applications. This paper describes a tier-to-tier (T2T) management architecture that supports decentralized actuator management in multi-tier systems, and a testbed implementation of this architecture using commercial software products. Based on testbed experiments and analytic models, we gain insight into the value of coordinated exploitation of actuators on multiple tiers, especially considerations for control efficiency and control granularity. For control efficiency, we show that more effective utilization of tiers can be achieved by using actuators on the bottleneck tier rather than only using actuators on the entry tier. For granularity of control (the ability to achieve a wide range of service level objectives) we show that a fine granularity of control can be achieved through a coordinated, cross-tier exploitation of coarse grained actuators (e.g., multiprogramming level), an approach that can greatly reduce controllerinduced variability.
Description Author affiliation: IBM Thomas J. Watson Research Center, NY (Yixin Diao)
ISBN 0769525407
ISSN 10636927
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2006-07-04
Publisher Place Portugal
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 333.72 kB
Page Count 1
Starting Page 25
Ending Page 25


Source: IEEE Xplore Digital Library