nanog mailing list archives

Re: Question about propagation and queuing delays


From: "Eric A. Hall" <ehall () ehsco com>
Date: Mon, 22 Aug 2005 11:32:43 -0400



On 8/22/2005 11:14 AM, David Hagel wrote:
This is interesting. This may sound like a naive question. But if
queuing delays are so insignificant in comparison to other fixed delay
components then what does it say about the usefulness of all the
extensive techniques for queue management and congestion control
(including TCP congestion control, RED and so forth) in the context of
today's backbone networks?

Latency is cumulative. Knocking a little time off Part A will still act to
shorten total time, regardless of the time occupied by Part B

Queuing behaviors are also significant when you are suffering congestion,
apart from the delay factors

-- 
Eric A. Hall                                        http://www.ehsco.com/
Internet Core Protocols          http://www.oreilly.com/catalog/coreprot/


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