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The effect of server reallocation time in dynamic resource allocation
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Al-Ghamdi, M., Chester, Adam P., Xue, J. W. J. and Jarvis, Stephen A. (2009) The effect of server reallocation time in dynamic resource allocation. In: UK Performance Engineering Workshop (UKPEW 2009), Leeds, UK, 6-7 July 2009
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Abstract
Since web workloads are known to vary dynamically with time, in this paper, we argue that dynamic resource allocation techniques are necessary to provide guarantees to web applications running on shared data centers. To address this issue, we use a system architecture that combines online measurements with prediction and resource allocation techniques. To capture the transient behavior of the application workloads, we model a server resource using a time-domain description of a generalized processor sharing (GPS) server. This model relates application resource requirements to their dynamically changing workload characteristics. The parameters of this model are continuously updated using an online monitoring and prediction framework. This framework uses time series analysis techniques to predict expected workload parameters from measured system metrics. We then employ a constrained non-linear optimization technique to dynamically allocate the server resources based on the estimated application requirements. The main advantage of our techniques is that they capture the transient behavior of applications while incorporating nonlinearity in the system model. We evaluate our techniques using simulations with synthetic as well as real-world web workloads. Our results show that these techniques can judiciously allocate system resources, especially under transient overload conditions.
| Item Type: | Conference Item (Paper) |
|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science |
| Official Date: | July 2009 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Conference Paper Type: | Paper |
| Title of Event: | UK Performance Engineering Workshop (UKPEW 2009) |
| Type of Event: | Workshop |
| Location of Event: | Leeds, UK |
| Date(s) of Event: | 6-7 July 2009 |
| Related URLs: |
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