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MLscale: A machine learning based application-agnostic autoscaler
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DOI：10.1016/j.suscom.2017.10.003.png)
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Autoscaling is the practice of automatically adding or removing resources for an application deployment to meet performance targets in response to changing workload conditions. However, existing autoscaling approaches typically require expert application and system knowledge to reduce resource costs and performance target violations, thus limiting their applicability. We present MLscale, an application-agnostic, machine learning based autoscaler that is composed of: (i) a neural network based online (black-box) performance modeler, and (ii) a regression based metrics predictor to estimate post-scaling application and system metrics. Implementation results for diverse applications across several traces highlight MLscale's application-agnostic behavior and show that MLscale (i) reduces resource costs by about 41%, on average, compared to the optimal static policy, (ii) is within 14%, on average, of the cost of the optimal dynamic policy, and (iii) provides similar cost-performance tradeoffs, without requiring any tuning, when compared to carefully tuned threshold-based policies. (C) 2017 Elsevier Inc. All rights reserved.
Keyword:
Cloud computing
Autoscaling
Dynamic provisioning
Machine learning
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