基于mean-variance的服務(wù)集群負(fù)載均衡方法
本文選題:負(fù)載均衡 + mean-variance模型; 參考:《電信科學(xué)》2017年01期
【摘要】:大量并發(fā)請(qǐng)求任務(wù)進(jìn)行分配時(shí),負(fù)載調(diào)度機(jī)制是通過(guò)最小化響應(yīng)時(shí)間及最大化節(jié)點(diǎn)利用率實(shí)現(xiàn)網(wǎng)絡(luò)中節(jié)點(diǎn)的負(fù)載均衡,在基于遺傳算法的負(fù)載均衡算法中,適應(yīng)度函數(shù)設(shè)計(jì)對(duì)服務(wù)集群負(fù)載均衡效率產(chǎn)生重要的影響。對(duì)此提出了一種基于mean-variance的服務(wù)集群負(fù)載均衡方法對(duì)適應(yīng)度函數(shù)進(jìn)行優(yōu)化,采用投資組合選擇模型mean-variance進(jìn)行最小化響應(yīng)時(shí)間,以得到每個(gè)服務(wù)器資源利用率的權(quán)重,從而獲得最優(yōu)的分配組合,進(jìn)而提高適應(yīng)度函數(shù)的準(zhǔn)確性和有效性。在不同服務(wù)環(huán)境下與其他模型進(jìn)行比較,仿真結(jié)果表明,本文的負(fù)載均衡算法在節(jié)點(diǎn)利用率和響應(yīng)時(shí)間方面使服務(wù)集群得到了更好的均衡。
[Abstract]:In this paper , the load balance of nodes in the network is realized by minimizing the response time and maximizing the node utilization rate . In the load balancing algorithm based on the genetic algorithm , the fitness function is optimized for the load balancing efficiency of the service cluster . The optimal allocation combination is obtained by using the portfolio selection model mean - variance to obtain the optimal allocation combination . The simulation results show that the load balancing algorithm in this paper makes the service cluster better balanced in terms of node utilization and response time .
【作者單位】: 浙江理工大學(xué);
【基金】:國(guó)家自然科學(xué)基金資助項(xiàng)目(No.61379036;No.61502430) 國(guó)家自然科學(xué)基金委中丹合作項(xiàng)目(No.61361136002) 浙江省重大科技專項(xiàng)重點(diǎn)工業(yè)項(xiàng)目(No.2014C01047) 浙江理工大學(xué)“521人才培養(yǎng)計(jì)劃”基金資助項(xiàng)目~~
【分類號(hào)】:TP368.5
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