EAGER: XSight - A Distributed Measurement Infrastructure for Data Transfer Nodes

随着研究数据量的增加，研究工作流变得更加动态和复杂，以及网络功能的扩展，有效工具的好处也会增加。本项目致力于在这一新的环境中探索有效的联网仪器。具体而言，XSight项目探索了如何有效地利用新的内核修改，使安装在数据传输节点(DTN)上的tcp工具能够：收集流级tcp连接性能数据；在参与大规模数据传输的dtn-S之间关联这些性能数据；以及与网络运营中心(Noc)通信以通知网络性能问题的存在。Xsight通过其对真实科学数据流的近实时流级数据收集、分析和报告性能的方法，加深了对科学数据流端到端网络行为的理解。此外，该系统有可能直接导致仪表化科学数据流的改善。该项目以NSF支持的XSEDE环境中的分布式DTN环境为目标，在DTN上部署了一个轻量级数据收集客户端。

As the volume of research data increases, as research workflows become more dynamic and complex, and as networking capabilities expand, the benefits of effective instrumentation grow. This project pursues the exploration of effective networking instrumentation in this new landscape. While pursued in the context of research cyberinfrastructure, the topic is relevant to other cyberinfrastructure.Specifically, the XSight project explores how to effectively leverage new kernel modifications enabling TCP instrumentation installed at Data Transfer Nodes (DTNs) to: collect flow level TCP connection performance data; correlate this performance data among DTN?s participating in large scale data transfers; and communicate with a Network Operations Center (NOC) to signal the presence of network performance problems. XSight, through its approach to near real time flow level data collection, analysis and reporting on real scientific data flow TCP performance, leads to a deeper understanding of end to end network behavior of scientific data flows. Further, the system has potential to directly lead to improvements of instrumented scientific data flows. The project targets the distributed DTN environment within the NSF-supported XSEDE environment with a light-weight data collection client deployed on the DTNs.