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Porting a User-Level Communication Architecture to NT:
Experiences and Performance

Yuqun Chen, Stefanos N. Damianakis, Sanjeev Kumar, Xiang Yu, and Kai Li
Department of Computer Science
Princeton University, Princeton, NJ-08544
{yuqun, snd, skumar, xyu, li}@cs.princeton.edu

Abstract:

This paper describes our experiences in porting the VMMC user-level communication architecture from Linux to Windows NT. The original Linux implementation required no operating system changes and was done entirely using device drivers and user-level libraries. Porting the Linux implementation to NT was fairly straightforward and required no kernel modifications. Our measurements show that the performance of both platforms is fairly similar for the common data transfer operations because they bypass the OS. But Linux performs better than NT on operations that require OS support.

• Introduction
• Communication Architecture
• Porting VMMC to NT
  • VMMC Components
  • Porting to NT
  • Lessons Learned
• Porting Sockets to NT
  • Stream Sockets
  • Implementing NT VMMC Sockets
  • Lessons Learned
• Performance evaluation
  • Methodology
  • Platform
  • Impact on Communication Setup
  • Impact on Data Transfer
    • Common case
    • UTLB overheads
    • Applications
  • Impact on Control Transfer
• Related Work
• Conclusions
• References
• About this document ...