[Iccrg] Proposal for ICCRG operations

John Leslie john at jlc.net
Sat Feb 4 21:02:56 GMT 2006


S. Keshav <keshav at uwaterloo.ca> wrote:
> 
> What is the commonly agreed definition for congestion

   I don't believe there is one. :^(

   To me, congestion is the condition where a packet can't be sent
"immediately" (meaning perhaps that it can't be queued as the next
packet to be sent).

   Clearly, many if not most Internet applications are perfectly happy
with some time in the queue; and it is arguable that some "smallish" time
in queue should be called "uncongested".

   I do not agree, however, that a definition of "congestion" should
be based on packets actually being dropped.

> If we do not agree on a definition, then indices are meaningless.

   It's not quite that bad: if an index of "congestion" doesn't define
what it's measuring, then that index is meaningless. However, I believe
we can make use of indices which measure different things.

--
John Leslie <john at jlc.net>



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