On P2P mechanisms for VM image distribution in cloud data centers : modeling, analysis and improvement
To provide elastic cloud services with QoS guarantee, it is essential for cloud data centers to provision virtual machines rapidly according to user requests. Due to bandwidth bottleneck of centralized model, P2P model is recently adopted in data centers to relieve server workload by enabling s...
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| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/96731 http://hdl.handle.net/10220/13090 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | To provide elastic cloud services with QoS guarantee,
it is essential for cloud data centers to provision
virtual machines rapidly according to user requests. Due to
bandwidth bottleneck of centralized model, P2P model is
recently adopted in data centers to relieve server workload
by enabling sharing among VM instances. In this paper, we
develop a simple theoretic model to analyze two typical P2P
models for VM image distribution, namely, isolated-image P2P
distribution model and cross-image P2P distribution model. We
compare their efficiency under different parameter settings and
derive their corresponding optimal server bandwidth allocation
strategies. In addition, we also propose a practical optimal
server bandwidth provisioning algorithm for chunk-level crossimage
P2P distribution mechanism to further improve its
efficiency. Extensive simulations are conducted to validate the
effectiveness of our proposed algorithm. |
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