The Design and Performance of a Real-time I/O Subsystem (1999)
| Venue: | in Proceedings of the 5 th IEEE Real-Time Technology and Applications Symposium |
| Citations: | 34 - 24 self |
BibTeX
@INPROCEEDINGS{Kuhns99thedesign,
author = {Fred Kuhns and Douglas C. Schmidt and David L. Levine},
title = {The Design and Performance of a Real-time I/O Subsystem},
booktitle = {in Proceedings of the 5 th IEEE Real-Time Technology and Applications Symposium},
year = {1999},
pages = {154--163},
publisher = {IEEE}
}
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Abstract
This paper describes the design and performance of a realtime I/O (RIO) subsystem that supports real-time applications running on off-the-shelf hardware and software. This paper provides two contributions to the study of real-time I/O subsystems. First, it describes how RIO supports end-to-end, prioritized traffic to bound the I/O utilization of each priority class and eliminates the key sources of priority inversion in I/O subsystems. Second, it illustrates how a real-time I/O subsystem can reduce latency bounds on end-to-end communication between high-priority clients without unduly penalizing low-priority and best-effort clients. 1 Introduction This paper focuses on the design and performance of a realtime I/O (RIO) subsystem that enhances the Solaris 2.5.1 kernel to enforce the QoS features of the The ACE ORB (TAO) [1] endsystem. RIO provides QoS guarantees for vertically integrated ORB endsystems in order to (1) increase throughput, (2) decrease latency and (3) improve end-to-end...
