[creswick at gmail.com: Re: [PLUG] Transcontinental ping times? for distributed symphonies]
Keith Lofstrom
keithl at kl-ic.com
Wed Sep 8 13:03:01 UTC 2004
----- Forwarded message from Rogan Creswick <creswick at gmail.com> -----
Forward this to plug if you want, I can't send from my subscribed
address at the moment.
Very cool idea!
>From IBM TJ Watson in Hawthorne, NY (just north of Manhattan) I get
~83ms pings to Oregon State University, in Corvallis. Pinging
uoregon.edu (which I think serves OSU's network) shaves about 2 ms off
that time, so 80-81 ms on average.
Targeting ucsd.edu (San Diego) comes in at about 86-87 on average, but
the median is 85. This came as a bit of a surprise to me, I hadn't
expected the network to be so fast (or direct, or whatever is causing
only a 5 ms difference accross 1000 miles) in SoCal compared to
Oregon. The stdev. is higher going to ucsd though. (about 2.5)
-Rogan
On Wed, 8 Sep 2004 10:22:15 -0700, Keith Lofstrom <keithl at kl-ic.com> wrote:
>
> Question: With fast machines at each end, and fat pipes running close
> to the main internet hubs, what is the fastest ping times seen running
> from coast to coast?
--- end of forwarded message.
Keith adds a small note: NYC to PDX probably uses fiber links routed
through Seattle. There is very likely another link going directly
from NYC to LA ( a "traceroute" would tell you ). The straight line
distances are within a few percent of each other.
This is demonstrated by air travel - from Portland to Boston is about
8 hours travel time, stopping at a hub, while direct flights from Boston
to LAX take 6 hours in fast widebodies. Direct routes have advantages.
Keith
--
Keith Lofstrom keithl at ieee.org Voice (503)-520-1993
KLIC --- Keith Lofstrom Integrated Circuits --- "Your Ideas in Silicon"
Design Contracting in Bipolar and CMOS - Analog, Digital, and Scan ICs
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