CSR: Small: Rethinking the OS/Network Boundary

操作系统和网络由于其开发的性质，在很大程度上是独立开发的--操作系统是由组织/公司内的小组开发的，而需要互操作性的网络是跨组织开发的。由于这种发展历史，网络子系统和操作系统的其余部分之间的边界仍然很不透明，很少有关于传输性能或进度的信息被传达给应用程序。这项研究通过探索一个更丰富的边界接口来解决这个问题，该接口允许程序看到网络传输的持续行为，并以细粒度控制它们的操作。这些接口将增加而不是取代现有的接口，因此对当前接口感到满意的程序部分可以继续不加修改，开发人员可以只改变那些可以从更丰富的信息中受益的部分。 这项研究在很大程度上是实验性的，并将结合联合收割机的设计和实现新的接口抽象沿着开发新的或修改后的程序，以利用这些接口。除了与接口相关的设计工作外，成功的其他标准包括检查修改后的应用程序的性能和延迟行为，以及修改这些应用程序所需的工作量。这项工作的预期结果包括应用程序可以更精确地控制其网络行为，减少内存和处理器使用，提高能源效率，并改善延迟行为。高性能或时间敏感的应用程序（例如网络视频）应该从这项研究中受益。

Operating systems and networks developed largely independently, due tothe nature of their development -- operating systems were developed bygroups within organizations/companies, while networking requiringinteroperability was developed across organizations. As a result ofthis development history, the boundary between the networkingsubsystem and the rest of the operating system has remained largelyopaque, with little information regarding the performance or progressof transfers being communicated to applications. This researchaddresses this limitation by exploring a richer boundary interfacethat allows programs to see the ongoing behavior of network transfersand to control their operation at a fine granularity. These interfaceswould augment, rather than replace, the existing interfaces, so theportions of programs that are satisfied with the current interfacescould continue unmodified, and developers could change only theportions that can benefit from richer information. This research islargely experimental in nature, and will combine the design andimplementation of new interface abstractions along with thedevelopment of new or modified programs to take advantage of theseinterfaces. In addition to the design work associated with theinterfaces, additional criteria for success include examining theperformance and delay behavior of modified applications, and theeffort needed to modify such applications. The expected results fromthis work include applications that can more precisely control theirnetworking behavior, reducing memory and processor usage, improvingenergy efficiency, and improving delay behavior. High-performance ortime-sensitive applications, such as networked video, should benefitfrom this research.