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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, 10 Oct 2019 10:49:57 -0600
John,

Our system administrator wrote the following:

> I decided to jump in and see what I can see.  Here's what I did -- I copied
> an iperf client to llj.wind.ttu.edu at opened and iperf server on uni14.
> Several tests over the last day show the available bandwidth between that
> llj and uni14 varies from 26Mbps to 68Mbps, with most tests in the 30-40Mbps
> range.  Remember this system is also connected at 100Mbps half duplex.

> Anyway, it looks to me between mammatus and rime, they're getting in the
> neighborhood of 25 GB / hr average (according to rtstats for the feeds they
> are receiving, also assuming they are getting full and not partial feeds.) 
> By my calculations, that works out to 55Mb/sec average.  I think they quite
> simply do not have the bandwidth required to get the feeds they're asking for,
> not to mention any other problems.

> I realize llj isn't mammatus or rime, but I worked with what I had...

If you can increase llj's bandwidth to 1G, full-duplex, then we might be able
to re-run the test.

Regards,
Steve Emmerson

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