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Autonomic Computing, International Conference on (2005)
Seattle, Washington
June 13, 2005 to June 16, 2005
ISBN: 0-7965-2276-9
pp: 217-228
Bhuvan Urgaonkar , University of Massachusetts, Amherst
Prashant Shenoy , University of Massachusetts, Amherst
Abhishek Chandra , University of Minnesota, Minneapolis
Pawan Goyal , Veritas Software India Pvt. Ltd.
Dynamic capacity provisioning is a useful technique for handling the multi-time-scale variations seen in Internet workloads. In this paper, we propose a novel dynamic provisioning technique for multi-tier Internet applications that employs (i) a flexible queuing model to determine how much resources to allocate to each tier of the application, and (ii) a combination of predictive and reactive methods that determine when to provision these resources, both at large and small time scales. Our experiments on a forty-machine Linuxbased hosting platform demonstrate the responsiveness of our technique in handling dynamic workloads. In one scenario where a flash crowd caused the workload of a three-tier application to double, our technique was able to double the application capacity within five minutes, thus maintaining response time targets.

A. Chandra, P. Shenoy, B. Urgaonkar and P. Goyal, "Dynamic Provisioning of Multi-tier Internet Applications," Autonomic Computing, International Conference on(ICAC), Seattle, Washington, 2005, pp. 217-228.
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