[NOAAPORT #KMJ-130268]: LDM 6.11.1 error with noisy NOAAPort feed

Gilbert,

> College of DuPage is getting a new NOAAPort dish installed as I type this.
> But, at least for today, they have a very noisy feed, with lots of
> "Gap in SBN" messages.
> 
> One of the things that I have always noticed is that when you have a
> noisy NOAAport feed, the LDM will eventually crash. Their LDM did just
> that today, and so, before they get a reliable feed, I checked their
> LDM, and saw that it had choked. With their system admin's permission
> (Dave Bukowski), I'd like to show this to you, in the hopes you can
> prevent this from at least crashing the LDM. And with the logging that
> LDM 6.11.1 has, hopefully you can see what the issue is. See below.
> 
> Gilbert
> 
> *******************************************************************************
> Gilbert Sebenste                                                    ********
> (My opinions only!)                                                  ******
> Staff Meteorologist, Northern Illinois University                      ****
> E-mail: address@hidden                                  ***
> web: http://weather.admin.niu.edu                                      **
> Twitter: http://www.twitter.com/NIU_Weather                            **
> Facebook: http://www.facebook.com/niu.weather                           *
> *******************************************************************************
> 
> Nov 12 06:02:15 noaaport dvbs_multicast[19872] ERROR: Gap in SBN last 
> 3858643, this 3858671, gap 27
> Nov 12 06:02:15 noaaport dvbs_multicast[19872] ERROR: Gap in SBN last 
> 3858643, this 3858671, gap 27
> Nov 12 06:02:15 noaaport readnoaaport[19877] ERROR: Can "want" exceed 1 
> packet?
> Nov 12 06:02:15 noaaport readnoaaport[19877] ERROR: Can "want" exceed 1 
> packet?
> Nov 12 00:02:15  readnoaaport[19877] last message repeated 3 times
> Nov 12 06:02:15 noaaport readnoaaport[19877] ERROR: large inflate error: -3
> Nov 12 00:02:15  readnoaaport[19877] last message repeated 3 times
> Nov 12 06:02:15 noaaport readnoaaport[19877] ERROR: large inflate error: -3
> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: child 19877 terminated by signal 
> 6: readnoaaport -m 224.0.1.2
> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: child 19877 terminated by signal 
> 6: readnoaaport -m 224.0.1.2

Signal 6 is a SIGABRT on my system. What is it on yours? If it's SIGABRT, then 
an assertion is likely failing. Can you get a core dump and send me a stack 
track?

Does this problem occur if you use noaaportIngester(1) rather than 
dvbs_multicast(1) and readnoaaport(1)?

> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: Killing (SIGTERM) process group
> Nov 12 06:02:15 noaaport weather.cod.edu(feed)[30301] NOTE: Exiting
> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: Exiting
> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: Terminating process group
> Nov 12 06:02:15 noaaport climate.cod.edu(feed)[1950] NOTE: Exiting
> Nov 12 06:02:15 noaaport cdstats.cod.edu(feed)[1842] NOTE: Exiting
> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: Killing (SIGTERM) process group
> Nov 12 06:02:15 noaaport weather.cod.edu(feed)[30301] NOTE: Exiting
> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: Exiting
> Nov 12 06:02:15 noaaport ldmd[19869] NOTE: Terminating process group
> Nov 12 06:02:15 noaaport climate.cod.edu(feed)[1950] NOTE: Exiting
> Nov 12 06:02:15 noaaport cdstats.cod.edu(feed)[1842] NOTE: Exiting
> Nov 12 06:02:15 noaaport climate.cod.edu(feed)[16544] NOTE: Exiting
> Nov 12 06:02:15 noaaport 10.11.3.63(feed)[30302] NOTE: Exiting
> Nov 12 06:02:15 noaaport climate.cod.edu(feed)[16544] NOTE: Exiting
> Nov 12 06:02:15 noaaport 10.11.3.63(feed)[30302] NOTE: Exiting
> 
> And that was the end of the log file.


Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: KMJ-130268
Department: Support NOAAPORT
Priority: Normal
Status: Closed