云计算平台的自适应资源供给

doi:10.3969/j.issn.1000-0801.2012.01.007

Abstract

Abstract:

An infrastructure cloud manages the infrastructure as a resource pool,enabling on-demand and dynamic resources provisioning according to resource consumption and service loads.This paper investigates the issue of adaptive resource provisioning for services in clouds.A model is proposed to predict cloud services'peak load and calculate the expected resources consumption.Resource of the best utility for the service is identified and allocated to the service.Simulation results suggest that the proposed adaptive resources provisioning model has a fair accuracy and stable performance.

Key words: cloud computing, IaaS, adaptive resource provision, service load prediction, just in time schedule

Gansen Zhao,Hai Yu,Tongkai Ji,Hong Song. Adaptive Resource Provisioning for Cloud Computing[J]. Telecommunications Science, 2012, 28(1): 35-41.

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References 13

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符号	描述
T_t	第t日的当前时刻，t=1,2,…,n,n+1，其中，1表示系统启
	动的第1日的当前时刻，n表示有历史记录的最后一日
	（即昨日）的当前时刻，n+1表示待预测日（即今日）的当
	前时刻
R_t	第t日当前时段最大并发请求数的实际值
R_p	当前日的最大并发请求数预测值
R_＇P	当前日的最大并发请求数预测修正值
C	历史平均预测不足率
f	f_rea-rc，详见第3.4节
X	资源X，为CPU、MEM、Store之一，依次表示CPU、内存
	及永久存储空间
E^X	资源 X的预测需求量
E	集合｛E^X\|X=CPU,MEM,Store｝
W^X	资源X 的价值参数，由系统管理员设定
W	集合｛W^X\|X=CPU,MEM,Store｝
VM	运行中的虚拟机集合
I_i	虚拟机类型i 的一个实例，可以是已开启、已关闭或者
	将要开启的
R^X_VMi	虚拟机类型i所能提供的资源X的量

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Adaptive Resource Provisioning for Cloud Computing

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