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[LDM #ORN-677013]: missing NOTHER feed

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  • Subject: [LDM #ORN-677013]: missing NOTHER feed
  • Date: Fri, 09 Feb 2018 07:48:07 -0700
Hi Dave,

Tom here...

re:
> I switched edex.esci.millersville.edu to only request the NOTHER feed, and 
> not do any
> processing.  We are still falling behind.  Our network people are still 
> looking into it,
> but they have not done any packet shaping or rate limiting on the server.
> 
> Why would this happen only to the NOTHER feed?

The real-time stats that edex.esci is sending back indicate that you are having
problems on all high volume feeds, not just NOTHER:

CONDUIT:
http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+edex.esci.millersville.edu

HDS:
http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?HDS+edex.esci.millersville.edu

GEM:
http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?GEM+edex.esci.millersville.edu

Low volume feeds are not showing the same sort of latencies:

IDS|DDPLUS:
http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?IDS|DDPLUS+edex.esci.millersville.edu

UNIWISC:
http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?UNIWISC+edex.esci.millersville.edu

It has been our experience that when low volume feeds are received with 
acceptable
latencies and high volume feeds are not, then there is some sort of artificial
bandwidth limiting going on.  If the total bandwidth volume was limited, all
feeds should show increased latencies as their delivery will be competing with
each other for that bandwidth.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: ORN-677013
Department: Support LDM
Priority: Normal
Status: Open
===================
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