User-Level Protocol Servers with Kernel-Level Performance (1998)
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| Venue: | In Proc. of the IEEE Infocom Conference |
| Citations: | 7 - 1 self |
BibTeX
@INPROCEEDINGS{Brustoloni98user-levelprotocol,
author = {Jos Carlos Brustoloni},
title = {User-Level Protocol Servers with Kernel-Level Performance},
booktitle = {In Proc. of the IEEE Infocom Conference},
year = {1998},
pages = {463--471}
}
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Abstract
Abstract — Compared to kernel-level servers, user-level ones can be debugged and maintained more easily and safely, but traditionally have had much worse performance. We describe a novel Z/O-oriented IPC facility that combines the emulated copy data passing scheme for monolithic systems with new copy avoidance techniques for microkernel systems. Unlike previous optimizations, I/O-oriented IPC does not re-quire changes in existing user applications or complex re-structuring of servers; it offers an API with copy semantics and allows the same servers to be installed at kernel or user level. In end-to-end experiments on an ATM network at 512 Mbps, I/O-oriented IPC gave user-level protocol servers performance approaching that of kernel-level ones. Perfor-mance differences scaled roughly inversely to the processor% SPECint95 rating, projecting fast further improvement. I.
