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임영빈

Im, Youngbin
Next-generation Networks and Systems Lab.
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ECHO: Efficiently Overbooking Applications to Create a Highly Available Cloud

Author(s)
Rahimzadeh, ParisaIm, YoungbinJung, GueyoungJoe-Wong, CarleeHa, Sangtae
Issued Date
2019-07-07
DOI
10.1109/ICDCS.2019.00010
URI
https://scholarworks.unist.ac.kr/handle/201301/79516
Citation
2019 IEEE 39th International Conference on Distributed Computing Systems (ICDCS)
Abstract
Ensuring high availability for applications despite unpredictable cloud component failure events is a well-known problem in managing cloud infrastructure. One proposed solution uses a VM redundancy approach, reserving cloud resources for backup VMs that can substitute for primary ones in case of a failure event. However, this solution decreases the cloud resource utilization, since the backup resources usually remain idle. In this paper, we propose ECHO, a cloud resource management system that overbooks these backup VMs by optimizing the overbooking rate tradeoff between maximizing the cloud resource utilization, and thus maximizing the cloud provider’s revenue; and improving application availability, thus satisfying users. Specifically, ECHO first obtains the optimal overbooking rate required to achieve a cloud provider’s desired resource utilization level. It then computes the optimal (required) number of backup VMs that are required to maintain a given application availability level. Our extensive experimental and simulation results show that using ECHO can increase the number of accepted applications with satisfied availability by about 30%, while increasing the defined resource utilization at the same time.
Publisher
IEEE

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