CSR: Small: Non-blocking Writes

在当前的操作系统中，对不在核心存储器中的页的写入要求进程阻塞，直到可以从后备存储器获取该页。本项目研究缓冲对核心内存中临时页面的写入，以便解除进程的阻塞以继续计算，并异步应用写入。研究任务包括研究和试验延迟核心外页面写入的实现技术，分析如何修改操作系统的调度和其他方面以实现写入延迟的全部好处，以及评估写入延迟对各种应用程序的性能影响的经验研究。通过在操作系统中合并非阻塞写入，应用程序可以在不对应用程序进行任何修改的情况下透明地从性能改进中受益。潜在的性能优势适用于广泛的计算机系统和应用程序。该项目通过实现创新的Linux操作系统代码的开源分发，促进了技术到实践的过渡。教育活动包括让本科生参与，并将项目研究纳入国际和平研究所教授的课程。外联活动包括招募代表人数不足的少数族裔学生参加该项目。

In current operating systems, writes to pages that are not in core memory require the process to block until the page can be fetched from the backing store. This project investigates buffering the write to a temporary page in core memory, so as to unblock the process to continue computation, and applying the write asynchronously. Research tasks include study and experimentation with implementation techniques for deferring out-of-core page writes, analysis of how scheduling and other aspects of the operating system may need to be modified in order to realize the full benefits of write deferral, and empirical studies to assess the performance impact of write deferral on a variety of applications.By incorporating non-blocking writes within the operating system, applications can transparently benefit from a performance improvement, without any modification to the application. The potential performance benefits apply to a broad spectrum of computer systems and applications. The project promotes transition of the technology to practice through open source distribution of Linux operating system code implementing the innovations. Educational activities include involvement of undergraduate students and incorporation of project research into courses taught by the PI. Outreach includes recruitment of under-represented minority students for participation in the project.