nanog mailing list archives

Re: Verizon Policy Statement on Net Neutrality


From: Miles Fidelman <mfidelman () meetinghouse net>
Date: Mon, 02 Mar 2015 13:42:48 -0500

Naslund, Steve wrote:
Average != Peak.

What is peak?  There is a question for you. If we get all the way down to the fundamentals of any network, peak is 
always 100%.  There is either a bit on the wire or not.  Your network is either 100% busy or 100% idle at any 
instantaneous moment in time.  What matters is average transfer rate to the user experience and even that varies a lot 
depending on the app in question and how that app tolerates things like jitter, loss, and latency.

That's simply wrong - at least for folks who do any work related stuff at home.

Consider: I've just edited a large sales presentation - say a PPT deck with some embedded video, totaling maybe 250MB (2gbit) - and I want to upload that to the company server. And let's say I want to do that 5 times during 12 hour day (it's crunch time, we're doing lots of edits).

On average, we're talking 20gbit/12 hours, or a shade under 500kbps, if we're talking averages. On the other hand, if I try to push a 2gbit file through a 500kbps pipe, it's going to take 4000 seconds (67 minutes) -- that's rather painful, and inserts a LOT of delay in the process of getting reviews, comments, and doing the next round of edits.

On the other hand, at 50mbps it takes only 40 seconds - annoying, but acceptable,
and at a gig, it only takes 2 seconds.

So, tell me, with a straight face, that "what matters is average transfer rate to the user experience."

Miles Fidelman

--
In theory, there is no difference between theory and practice.
In practice, there is.   .... Yogi Berra


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