| A. S. Waterman, "A Comparison of Off-Host vs. In-Kernel Communications Architecture," M. S. Thesis, Department of Computer Science, University of Virginia (in preparation). |
....to what extent the architecture described in chapter four provides the possible benefits off host communications architectures. Some facets of this evaluation require comparison with the behavior an in host architecture. For this purpose we compare our work with an in kernel implementation of XTP [47]. This in kernel approach features a somewhat different API, but the XTP layer and below consists of essentially the same protocol software. Other evaluations consider aspects of our off host communications architecture which are readily observable from the design presented in chapter four or its ....
....thus, we can indeed reduce and, in fact, precisely bound incident TSDU traffic by limiting the number of receive operations that the host performs. Similar 107 benefits also occur with respect to interrupts; each sending or receiving operation incurs exactly one host interrupt. Results from [47] show that 26 interrupts can result for a single 64 KB receiving operation. Thus the off host architecture incurs 96 fewer interrupts in such cases. Obviously our design is quite successful in acting as a firewall. The CPU load for transmitting and receiving operations can be characterized (1) ....
[Article contains additional citation context not shown here]
A. S. Waterman, "A Comparison of Off-Host vs. In-Kernel Communications Architecture, " M.S. Thesis, Department of Computer Science, University of Virginia (in preparation).
....processing. Results of a in kernel implementation also show transport level throughput to be substantially lower than that of the off host implementation. This shows that the lightweight operating system of the attached processor is a better match to the performance demands of communications [WATE93]. ....
A. S. Waterman, "A Comparison of Off-Host vs. In-Kernel Communications Architecture," M. S. Thesis, Department of Computer Science, University of Virginia (in preparation).
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