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OCSO: Off-the-cloud service optimization for green efficient service resource utilization

Fang, Daren; Liu, Xiaodong; Liu, Lin; Yang, Hongji


Daren Fang

Lin Liu

Hongji Yang


Many efforts have been made in optimizing cloud service resource management for efficient service provision and delivery, yet little research addresses how to consume the provisioned service resources efficiently. Meanwhile, typical existing resource scaling management approaches often rest on single monitor category statistics and are driven by certain threshold algorithms, they usually fail to function effectively in case of dealing with complicated and unpredictable workload patterns. Fundamentally, this is due to the inflexibility of using static monitor, threshold and scaling parameters. This paper presents Off-the-Cloud Service Optimization (OCSO), a novel user-side optimization solution which specifically deals with service resource consumption efficiency from the service consumer perspective. OCSO rests on an intelligent resource scaling algorithm which relies on multiple service monitor metrics plus dynamic threshold and scaling parameters. It can achieve proactive and continuous service optimizations for both real-world IaaS and PaaS services, through OCSO cloud service API. From the two series of experiments conducted over Amazon EC2 and ElasticBeanstalk using OCSO prototype, it is demonstrated that the proposed approach can make significant improvement over Amazon native automated service provision and scaling options, regardless of scaling up/down or in/out.


Fang, D., Liu, X., Liu, L., & Yang, H. (2014). OCSO: Off-the-cloud service optimization for green efficient service resource utilization. Journal of cloud computing: advances, systems and applications, 3(1),

Journal Article Type Article
Acceptance Date May 22, 2014
Online Publication Date Jun 14, 2014
Publication Date 2014-12
Deposit Date Jul 29, 2014
Publicly Available Date May 16, 2017
Publisher BMC
Peer Reviewed Peer Reviewed
Volume 3
Issue 1
Keywords Cloud computing; Auto scaling; Service API; Service optimization; Service resource consumption management
Public URL
Publisher URL
Contract Date May 16, 2017


OCSO: Off-the-cloud service optimization for green efficient service resource utilization. (3.6 Mb)

Copyright Statement
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited

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