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OnlineElastMan: self-trained proactive elasticity manager for cloud-based storage services
KTH.
KTH.
KTH, School of Information and Communication Technology (ICT), Software and Computer systems, SCS.
2017 (English)In: Cluster Computing, ISSN 1386-7857, E-ISSN 1573-7543, Vol. 20, no 3, p. 1977-1994Article in journal (Refereed) Published
Abstract [en]

The pay-as-you-go pricing model and the illusion of unlimited resources in the Cloud initiate the idea to provision services elastically. Elastic provisioning of services allocates/de-allocates resources dynamically in response to the changes of the workload. It minimizes the service provisioning cost while maintaining the desired service level objectives (SLOs). Model-predictive control is often used in building such elasticity controllers that dynamically provision resources. However, they need to be trained, either online or offline, before making accurate scaling decisions. The training process involves tedious and significant amount of work as well as some expertise, especially when the model has many dimensions and the training granularity is fine, which is proved to be essential in order to build an accurate elasticity controller. In this paper, we present OnlineElastMan, which is a self-trained proactive elasticity manager for cloud-based storage services. It automatically evolves itself while serving the workload. Experiments using OnlineElastMan with Cassandra indicate that OnlineElastMan continuously improves its provision accuracy, i.e., minimizing provisioning cost and SLO violations, under various workload patterns.

Place, publisher, year, edition, pages
SPRINGER , 2017. Vol. 20, no 3, p. 1977-1994
Keywords [en]
Elasticity controller, Cloud storage, Workload prediction, SLO, Online training, Time series analysis
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:kth:diva-214317DOI: 10.1007/s10586-017-0899-zISI: 000407928800009Scopus ID: 2-s2.0-85019724244OAI: oai:DiVA.org:kth-214317DiVA, id: diva2:1141958
Note

QC 20170918

Available from: 2017-09-18 Created: 2017-09-18 Last updated: 2018-01-13Bibliographically approved

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Vlassov, Vladimir

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf