Fw: [e2e] overlay over TCP

[Dave Crocker]

On Thu, 20 Jan 2005 16:51:09 -0500, Paul D. Amer wrote:
>  FTP can run over SCTP, and in fact can perform better
>  than FTP running over TCP.

"Perform better" has some significant pre-conditions, here.

The savings of the work you cite are primarily in transition latencies (from connection setup and command lock-step performance.)

For a single transfer of a large file, this enhancement is irrelevant.  The data transfer portion washes out any command or transition overhead.

For a single transfer of a small file, this enhancement is irrelevant. Everything is so quick, making the control and transition mechanism quicker doesn't really make any difference.

In fact the savings are only interesting in the case of having a large number of small files to transfer.  In this case, the "control" overhead will tend to dominate, so that optimizing it is indeed a Good Thing.


d/
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Dave Crocker
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