Re: The 100 Gbit/s problem in your network

["Patrick W. Gilmore" <patrick () ianai net>]

On Feb 11, 2013, at 18:52 , "Patrick W. Gilmore" <patrick () ianai net> wrote:
> On Feb 11, 2013, at 14:11 , Stephen Sprunk <stephen () sprunk org> wrote:

> > Multicast _is_ useful for filling the millions of DVRs out there with
> > broadcast programs and for live events (eg. sports).  A smart VOD system
> > would have my DVR download the entire program from a local cache--and
> > then play it locally as with anything else I watch.  Those caches could
> > be populated by multicast as well, at least for popular content.  The
> > long tail would still require some level of unicast distribution, but
> > that is _by definition_ a tiny fraction of total demand.
>
> One of us has a different dictionary than everyone else.
>
> Assume I have 10 million movies in my library, and 10 million active users.  Further assume there are 10 movies being 
> watched by 100K users each, and 9,999,990 movies which are being watched by 1 user each.

Obvious typo, supposed to be 8,999,990.  Or you can say I have 11 million users.  Whichever floats your boat.

Hopefully the point is still clear, even in a crowd as pedantic as this.

-- 
TTFN,
patrick


> Which has more total demand, the 10 popular movies or the long tail?
>
> This doesn't mean Netflix or Hulu or iTunes or whatever has the aforementioned demand curve.  But it does mean my 
> "definition" & yours do not match.
>
> Either way, I challenge you to prove the long tail on one of the serious streaming services is a "tiny fraction" of 
> total demand.
>
> -- 
> TTFN,
> patrick