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[LDM #GUQ-669331]: Both Radar and Satellite feeds stopped downloading abruptly

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  • Subject: [LDM #GUQ-669331]: Both Radar and Satellite feeds stopped downloading abruptly
  • Date: Thu, 05 Sep 2019 15:35:27 -0600
Hi,

re:
> That is very strange, especially considering both 128.117.135.3 and 
> 128.117.130.3 are
> producing the same slowdown to our server.

Steve and I ran a test the other data that changed the upstream host from
one at Unidata to a top level IDD relay at UWisconsin (idd.aos.wisc.edu)
during a period of high reported latencies being reported by mammatus.  The
results were exactly the same as when REQUESTing from either/both of
idd.unidata.ucar.edu and iddb.unidata.ucar.edu.  I recommend that you
repeat and expand this test by changing your REQUESTs to either/both
of the following:

idd.aos.wisc.edu
idd.meteo.psu.edu

If after switching the latencies being experienced on mammatus are unchanged,
then the slowdown is at/near TTU.  If, on the other hand, the latencies drop
to expected levels _and_ stay there, then the problem is at/close to us.

re:
> Can you send me a full capture (showing both directions) of say 30 seconds or 
> so?  I'd
> like to compare what the capture looks like on your server compared to mine.
> 
> 128.117.135.3  <>  129.118.186.9
> 128.117.130.3  <>  129.118.186.9

I think that switching your upstream feed host as I recommend above will be a 
more
definitive test, and one that you can control from your end.  Please give it a 
whirl...


Cheers,

Tom
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Ticket Details
===================
Ticket ID: GUQ-669331
Department: Support LDM
Priority: Normal
Status: Closed
===================
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