[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Additional Question

On Fri, 16 Apr 1999, Tom Grzelak wrote:

> 
> Let me ask you a quick question -> for each ".....Connection from
> ###.###.###.###" log item in ldmd.log, does that correspond to a brand new
> connection from a machine?

Yes

  I believe it does which leads to my next
> question, my logs have approximately 80 connections from
> weather.taft.pvt.k12.ct.us per day in them.  What could be the reason for
> having so many connections?

The latency builds up to over any hour, the network breaks the connection,
the connection is reset by the remote machine.

  Is there something wrong with
> weather.taft.pvt.k12.ct.us?

I bet the connections are due to network congestion late in the afternoon.
The NE is noted for this problem.  A solution would be to filter the
amount of data requested by taft. Here's the filter that could be
installed at taft ldmd.conf:

request WMO "(^[A-OQ-X])|(^[YZ].[^AHIJRU])"  <hostname>

  Should I contact the sysadmin about this?

Sure, they are probably getting data they don't need.


Robb...

> 
> Thanks!
> Tom
> 
> At 02:21 PM 4/16/99 -0600, you wrote:
> >Tom,
> >
> >Can you add millersville as a backup feeder. I'm sure David would
> >appreciate it since his current latency is over an hour. The NE is still
> >having problems.
> >
> >site: twister.millersv.edu
> >
> >Thanks,
> >Robb...
> >
> >On Fri, 16 Apr 1999, Unidata Support wrote:
> >
> >> 
> >> ------- Forwarded Message
> >> 
> >> >To: address@hidden
> >> >From: David Fitzgerald <address@hidden>
> >> >Subject: idd latencies
> >> >Organization: Millersville University
> >> >Keywords: 199904161855.MAA15685 IDD
> >> 
> >> I have been getting really high latencies from both my primary feed
> >> (blueskies.sprl.umich.edu) and secondary (redwood.atmos.albany.edu) for
> >> the past several weeks.  I was hoping that it would eventually clear up
> >> since Bell Atlantic was installing new equipment, but it doesn't look
> >> like it will.  Looking over the FOS feed data, we currently have a
> >> latency of 61 minutes, which explains why we are missing data.  I just
> >> switched back to my primary hoping to get lucky and get a better feed,
> >> but traceroutes to both don't look prominsing.
> >> 
> >> Can you offer any help in finding an upstream site with better
> >> connectivity?
> >> 
> >> 
> >> ++++++++++++++++++++++++++
> >> David Fitzgerald    
> >> System Administrator                              
> >> Department of Earth Sciences       Phone: (717) 871-2394   
> >> Millersville University    Fax: (717) 871-4725 
> >> Millersville, PA 17551             E-mail: address@hidden
> >> 
> >> 
> >> ------- End of Forwarded Message
> >> 
> >
> >===========================================================================
> ====
> >Robb Kambic                             Unidata Program Center
> >Software Engineer III                           Univ. Corp for Atmospheric 
> >Research
> >address@hidden                  WWW: http://www.unidata.ucar.edu/
> >===========================================================================
> ====
> >
> >
> >
> ===============================================================
> Tom Grzelak                        address@hidden
> Manager - Computing Services
>  ----> Center for Environmental Prediction
>  ----> Department of Environmental Sciences  
> 
> Rutgers University
> 14 College Farm Road                  Voice: 732-932-4923     
> New Brunswick, NJ 08901-8551          Fax: 732-932-8644
>                 http://www.envsci.rutgers.edu
> ===============================================================
> 

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================