On the energy consumption computation in Content Delivery Networks

被引：7

作者：

Bianco, Andrea ^{[1
]}

Mashayekhi, Reza ^{[1
]}

Meo, Michela ^{[1
]}

机构：

[1] Politecn Torino, Dept Elettron & Telecomunicaz, Turin, Italy

来源：

SUSTAINABLE COMPUTING-INFORMATICS & SYSTEMS | 2017年 / 16卷

关键词：

Content Delivery Networks; Energy consumption; Hierarchical Internet map; Synchronization energy consumption; CDN caching strategies;

D O I：

10.1016/j.suscom.2017.08.008

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Data distribution via Content Delivery Networks (CDNs) is one of the most significant energy consuming sectors in the ICT area. A CDN system can be abstracted as a primary server housing the entire data set and several surrogate servers, each one caching a portion of the whole data set. We propose a new model to compute the total energy consumption of CDNs. The model is based on a hierarchical Internet representation, and includes the energy consumption needed to keep servers synchronized. We analyze the effect of synchronization and network topology on the total energy consumption of CDNs. Results reveal that increasing the number of surrogate servers reduces the transmission delay. However, this does not necessarily lead to a reduction of the total energy consumption. Furthermore, the effect of network topology and various caching strategies is described. Results show that CDN energy consumption strongly depends on the ratio between the number of content requests and content modifications, and considering a hierarchical network topology highlights slightly different energy consumption trends with respect to those of classical "flat" network representation. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：56 / 65

页数：10