Impact of location on the energy footprint of digital media
Impact of location on the energy footprint of digital media
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DOI：
10.1109/issst.2012.6228017
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发表时间：
2012-05
期刊：
影响因子：
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通讯作者：
Daniel Schien;C. Preist;M. Yearworth;P. Shabajee
中科院分区：
文献类型：
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作者：
Daniel Schien;C. Preist;M. Yearworth;P. Shabajee
为了准确评估地理位置对数字媒体能源足迹的影响，需要考虑用户和数据提供商之间地理距离的互联网能源使用模型。在本文中，我们提出了第一个这样的模型来做到这一点。给定数据源和用户的特定位置，我们使用traceroute数据来估计数据传输中涉及的网络设备的数量和类型。然后，我们计算传输数据所需的能量，并结合从学术出版物和行业手册等多个来源汇编的能源消耗和利用数据。大量的在线数据现在由内容交付网络（CDN）提供服务，内容交付网络在世界各地缓存多个内容副本。我们发现，CDN的主要作用是加快向最终用户的交付，也减少了网络的能源足迹。
In order to accurately assess the impact of geographical location on the energy footprint of digital media requires energy usage models of the Internet that take into account the geographic distance between both users and data providers. In this paper, we present the first such model to do this. Given the specific location of a data source and a user, we use traceroute data to estimate the number and type of network devices involved in data transmission. We then calculate the energy required to transmit the data, combined with energy consumption and utilization data compiled from a number of sources including both academic publications and industry datasheets. Significant quantities of online data are now served by Content Delivery Networks (CDNs), which cache multiple copies of content in locations around the world. We find that CDNs whose primary role is to speed up delivery to the end user also reduce the energy footprint of the network.