[e2e] two questions about the Internet
George Michaelson
ggm at dstc.edu.au
Thu Mar 15 16:23:51 PST 2001
Srini Seshan (when he was here at Watson) had some packet trace data from
the 1996 Olympic Web server, but it's a bit old now. The technique was
similar to what Mark Allman did. For the record, though, it had:
- 25% of the RTTs < 115 ms
- 50% of the RTTs < 338 ms
- 75% of the RTTs < 778 ms
The RTTs are obviously going to vary depending on what kind of
connection you have (T3, OC-768) as well as where your clients
are (NY, CA, Greece).
-Erich
The 96 Olympics were hosted behind multiple backends, geographically
distributed? I thought Nagano was, I went to a seminar by IBM on it.
Because if so, there were presumably frontend boxes making decisions
on backend server, which would either intuit best-fit path or else
map it into some simple model like BGP AS or link-based region and
so skew RTT in favour of shorter-hop and/or ligher-load hosts.
-George
--
George Michaelson | DSTC Pty Ltd
Email: ggm at dstc.edu.au | University of Qld 4072
Phone: +61 7 3365 4310 | Australia
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