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--></style><title>Re: [dns-operations] The (very) uneven distribution
of DNS</title></head><body>
<div>At 10:12 -0400 5/15/12, McTim wrote:</div>
<div><br></div>
<div>>One wonders where the data came from and how up to date it
is.</div>
<div><br></div>
<div>To me the question is the accuracy of the following statement in
the article, not the precise numbers themselves:</div>
<div><br></div>
<div>"One would imagine that if all things were equal, the
distribution of root servers should mirror the distribution of
Internet users."</div>
<div><br></div>
<div>That sentence seems nice on the surface, but I don't think it is
true. As another poster notes:</div>
<div><br></div>
<div>"A better - although still inaccurate - metric would be root
servers / ISP."</div>
<div><br></div>
<div>IMHO, Correlating "machine population" to "people
population" is dodgy.</div>
<div><br></div>
<div>There's another consideration, a statistical side effect.
According to the article, Asia has 20M people per server.
Oceania has 1.5M people per server. Is it the case that Asia is
under served, is it the case that Oceania is over provisioned, or is
it both, or is it neither)? Perhaps a root server can handle 30M
people's needs.</div>
<div><br></div>
<div>We could go on with this...on average, how many root queries are
performed while loading a web page? Using a large ISP (or
any other) recursive server, probably a number way less than 1.</div>
<div><br></div>
<div>In my early days, we had a person report that a user group
demanded 1.544 Mbps in bandwidth needs. A bunch of us recognized
the number as something special, so we asked for a bit more info on
why precisely "1.544 Mbps." The reporter, after a few
questions on his method admitted "ok, the number is way more
precise than accurate." (As in "1.544 +/- 2" was
the follow up joke.) I'd say that is the same label that could
be put on this article. The numbers probably are precise, but
don't carry the "accurate" story.</div>
<div><br></div>
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