CRI-CI-ADDO-EN: National File System Trace Repository

项目摘要CRI-CI-ADDO-EN：国家文件系统跟踪存储库研究计算机文件系统的最有效方法之一是使用跟踪，跟踪是计算机在硬盘或一组文件上执行的实际操作的记录。例如，跟踪可能显示用户在文档上启动了文字处理器，在20分钟内保存了三次，使用Web浏览器从Internet检索图像，将该图像插入到文档中，然后第四次保存。通过分析这类痕迹，研究人员可以确定如何设计文件系统以向用户提供最佳性能和可靠性。此外，研究人员可以重放痕迹，以重现实时用户产生的活动，使他们能够测试新设计，而不需要花费真实受试者进行实验的费用和难度。然而，收集痕迹本身就是一项具有挑战性的活动，所以一旦研究人员获得了痕迹，最好与其他人分享。轨迹共享还允许不同的研究人员在一致的、可重复的条件下测试他们的系统，以便可以公平地比较和评估不同的想法。不幸的是，一直没有可靠的痕迹来源，因此研究人员经常被迫使用特别的方法来测试他们的系统，或者使用不能代表现代计算机系统的过时的痕迹。为了缓解这些困难，我们正在建立一个全国性的文件系统痕迹存储库。存储库的设计使其最终可以保存收集到的所有痕迹，无论是历史上的还是现代的，这样研究人员就可以轻松地上传、下载、共享、分析和回放集合中的任何痕迹。标准化的格式将使痕迹易于操作，研究人员将为此目的提供软件工具。在目前的项目中，NSF提供了种子资金，使哈维·穆德学院及其合作者能够创建该存储库的原型，证明其可行性，并表明研究人员将发现它是有用的。

Project AbstractCRI-CI-ADDO-EN:National File System Trace Repository One of the most effective ways to study computer file systems is through the use of traces, which are records of the actual operations that a computer performed on a hard disk or a set of files. For example, a trace might show that a user launched a word processor on a document, saved it three times over a period of 20 minutes, used a Web browser to retrieve an image from the Internet, inserted that image into the document, and saved it a fourth time. By analyzing traces of this sort, researchers can determine how to design file systems to provide users with optimal performance and reliability. In addition, researchers can replay a trace to reproduce the activity generated by a live user, allowing them to test new designs without the expense and difficulty of experimenting with real subjects. However, collecting traces is itself a challenging activity, so once a researcher has acquired a trace, it is desirable to share it with others. Trace sharing also allows diverse researchers to test their systems under consistent, reproducible conditions, so that different ideas can be compared and evaluated fairly. Unfortunately, there has never been a reliable source of traces, so that researchers have often been forced to use ad hoc methods to test their systems, or to use outdated traces that aren't representative of modern computer systems. To alleviate these difficulties, we are building a national repository of file system traces. The repository is designed so that it can eventually hold every trace that has ever been collected, both historical and modern, and so that it will be easy for researchers to upload, download, share, analyze, and replay any trace in the collection. A standardized format will make traces easy to manipulate, and software tools for that purpose will be made available to researchers. In the current project, NSF has provided seed funding to allow Harvey Mudd College and its collaborators to create a prototype of the repository, demonstrate its feasibility, and show that researchers will find it useful.