Evolving the HTTP Ecosystem to Efficiently Support Video and other Large Files

研究表明，在北美，视频现在占互联网所有流量的40-66%，并将迅速增加到90- 95%。互联网视频服务现在使用相同的方法向消费者提供视频，就像从网络搜索、银行、在线购物、社交网络和其他流行服务中提供数据一样。 问题在于，用于提供这些内容的现有系统尚未设计和优化以提供视频。 结果通常是不太令人满意的视频观看体验，当从服务器获取视频时，视频被中断或暂停。 当试图观看高清视频或其他人使用相同的服务或网络时，这一点尤其明显。 更重要的是，有证据表明，随着视频需求的增加，它将使我们已经依赖的现有服务变得越来越慢。 我们的研究将设计新的方法来提高用于向消费者提供内容的底层系统、软件和网络的效率。 我们将通过实验来评估，识别瓶颈，并提高现有软件系统的性能。 这将减少互联网服务提供商所需的机器数量，从而减少他们消耗的电力并降低成本。 对于消费者来说，这将降低为这些服务支付的成本。 此外，这将使高品质的视频顺利交付到他们的台式电脑，笔记本电脑，上网本，平板电脑或智能手机，无论他们是在工作，家庭，或在路上。 最重要的是，我们将作出这些改进，同时确保对我们生活至关重要的现有服务不仅继续运作，而且运作良好。

Studies report that in North America video now accounts for 40-66% of all traffic on the Internet and it will rapidly increase to 90-95%. Internet video services are now using the same methods to deliver video to consumers as are used to deliver data from web searching, banking, on-line shopping, social networking and other popular services. The problem is that the existing systems used to deliver that content have not been designed and optimized to deliver video. The result is often a less than satisfying video viewing experience, with videos being interrupted or paused while the video is fetched from the server. This can be especially noticeable when trying to view high-definition videos or during times when others are using the same service or network. More importantly, there is evidence that shows that as the demand for video increases, it will make the existing services we have come to rely on slower and slower. Our research will devise new methods to improve the efficiency of the underlying systems software and networks used to deliver content to consumers. We will experimentally evaluate, identify bottlenecks in, and improve the performance of existing software systems. This will reduce the number of machines required by providers of Internet services, thereby reducing the power they consume and lowering their costs. For consumers this should reduce costs paid for these services. In addition, this will enable the smooth delivery of high-quality video to their desktop PC, laptop, netbook, tablet or smart phone whether they are at work, home, or on the road. Most importantly, we will make these improvements while ensuring that existing services that have become critical to our lives not only continue to function but function well.