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At 8:39 AM -0500 12/1/00, Jonathan M. Smith wrote:
>Hey folks. Just to provide a little "blast from the past", David Feldmeier,
>then at Bellcore, proposed an idea called "chunks" for TP++, a protocol
>design effort to address 1Gbps+ networking, that did exactly this. There
>was a SIGCOMM paper around 1993 or so - I don't have the ref handy as I'm
>typing this. There was a lot of nice thinking in the TP++ effort, and
>at least at a high level, much seems to apply to iSCSI.
> -JMS
Feldmeier, David C., "A data labelling technique for high-performance
protocol processing and its consequences," Proceedings of the ACM
SIGCOMM Conference on Communications Architectures, Protocols, and
Applications, September 13-17, 1993, pages 170-181.
It's at http://www.acm.org/pubs/contents/proceedings/comm/166237/.
Abstract:
"Reordering and reassembly of data before processing can reduce
communication system performance as seen by the application. We
examine a method of explicitly labelling blocks of data with
sufficient information to allow process-ing of disordered data. Our
labelling syntax for data blocks, which we call chunks, is cleaner
and more general than that of other protocols. We show how chunks can
be used for efficient fragmentation/reassembly and compare chunks
with other fragmentation systems. End-to-end error detection is
complex for chunks or other systems that allow both fragmentation and
processing of disordered data. We show that it is possible to design
an end-to-end error detection system that does not compromise chunk
processing performance. Chunks can take advantage of processing
techniques such as Integrated Layer Processing and can be used to
implement concepts such as Application Layer Framing [CLAR 90]."
- Lyman
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