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20031205: Problems with pqsurf/pqact... how best to assist?



Steven,

>Date: Fri, 05 Dec 2003 14:18:11 -0600
>From: Steven Danz <address@hidden>
>Organization: NOAA/NWS/NCEP/Aviation Weather Center
>To: Steve Emmerson <address@hidden>
>Subject: Re: 20031203: Problems with pqsurf/pqact... how best to assist?

The above message contained the following:

> It may have been that ldmfail was causing a restart due to the upstream 
> failing over to a new site.
> Looking closer at the log files I'm seeing things like:
> 
> Dec 02 13:50:45 pqsurf[29465]: Interrupt
> Dec 02 13:50:45 pqsurf[29465]: Exiting
> Dec 02 13:50:45 pqact[29466]: Interrupt
> Dec 02 13:50:45 pqact[29466]: Exiting
> Dec 02 13:50:45 pqsurf[29465]: child 29466 terminated by signal 11
> 
> The odd thing is that ldmd isn't gone, just pqsurf, which makes me 
> wonder if it really is
> restarting.
> 
> I tried a stop/start on my own and it was fine....

If you have the bandwidth, my advice would be to forget ldmfail(1) and,
instead, have two PRIMARY upstream feeds for each crucial datastream.
Information on this tradeoff between bandwidth and robustness can be
found at

    
http://my.unidata.ucar.edu/content/software/ldm/ldm-6.0.14/basics/tradeoffs.html

> Thanks again for all the help!
> 
> Steven

You're most welcome.

Regards,
Steve Emmerson
LDM Developer