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20080220: WSI request from UNCO to idd.unidata.ucar.edu (cont.)



Hi Gary,

re:
>I was just checking that file when your email came in.  I have now taken
>out any WSI requests from the ldmd.conf as well as the pqact.conf files.

OK.

>That should do it!

That did the trick, thanks!

>Here is my ldmd.conf file.

Thanks for sending this.  I see something that you should modify to
cut down on network resources and decrease your product latencies:

Your current set of active request lines is:

REQUEST IDS|DDPLUS      ".*"    IDD.unidata.ucar.edu
REQUEST NNEXRAD         ".*"    IDD.unidata.ucar.edu
REQUEST HDS|CONDUIT|NGRID       ".*"    IDD.unidata.ucar.edu
REQUEST CONDUIT         ".*"    IDD.unidata.ucar.edu

1) Notice that you are requesting all of the products in the CONDUIT
   feed twice.  With current versions of the LDM, this will cause twice
   the volume of data to be sent to your machine.  Duplicate products will
   be rejected by your LDM queue, but you will have already used up
   twice as much network bandwith as you need to.

2) your grouping of the high volume HDS, CONDUIT, and NGRID feeds is
   likely a cause of the very high product receipt latencies being
   seen for those feeds:

http://www.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+tornado.unco.edu

3) I see that you are not requesting any imagery data.

Because of the items above, I suggest you reorganize your
~ldm/etc/ldmd.conf requests to look like:

REQUEST UNIDATA  ".*"    IDD.unidata.ucar.edu
REQUEST NNEXRAD  ".*"    IDD.unidata.ucar.edu
REQUEST CONDUIT  ".*"    IDD.unidata.ucar.edu
REQUEST NGRID    ".*"    IDD.unidata.ucar.edu

Here:

UNIDATA <-> IDS|DDPLUS|HDS|UNIWISC

After making these changes and restarting your LDM, we need to keep an
eye on latencies in the IDS|DDPLUS feed.  If they are too high, we
would likely need to split off that ingest from the HDS and UNIWISC
ingest.

By the way, how large is your LDM product queue?  Please send the
output of:

<as 'ldm'>
ldmadmin config

I am betting that your product queue is too small to effectively
process all of the NNEXRAD+HDS+CONDUIT+NGRID data.

Cheers,

Tom

>Gary
>
>-----Original Message-----
>From: Unidata Support [mailto:address@hidden]=20
>Sent: Wednesday, February 20, 2008 3:35 PM
>To: Huffines, Gary
>Cc: Unidata Support
>Subject: 20080220: WSI request from UNCO to idd.unidata.ucar.edu (cont.)
>
>
>
>Hi Gary,
>
>re:
>>I think I may have it now.  Our pqact.conf file is stripped down to
>just
>>some basic information so that we have something to test the GEMPAK
>>decoders once I get those installed correctly. Please let me know if
>you
>>still see the data requests.
>
>We are still seeing the requests for WSI data from tornado.  Can you
>send us your ~ldm/etc/ldmd.conf file so we can check it out?  Thanks!
>
>Cheers,
>
>Tom
>
>>-----Original Message-----
>>From: Unidata Support [mailto:address@hidden]=3D20
>>Sent: Wednesday, February 20, 2008 3:25 PM
>>To: Huffines, Gary
>>Cc: Unidata Support
>>Subject: 20080220: WSI request from UNCO to idd.unidata.ucar.edu
>(cont.)
>>
>>
>>Hi Gary,
>>
>>re: removing all WSI request lines from tornado's ldmd.conf file
>>
>>>I missed a request line in the pqact.conf file and have now commented
>>>them out.  There shouldn't be any more requests along those lines.
>>
>>We are still getting WSI requests from tornado (I am watching the
>>~ldm/logs/ldmd.log file on our top-level relay node,
>>idd.unidata.ucar.edu).
>>Did you remember to restart the LDM after making the change to
>tornado's
>>~ldm/etc/ldmd.conf file?  If yes, there must still be another request
>>line in ldmd.conf.
>>
>>Thanks for the help!
>>
>>No worries.  We're almost there...
>>
>>Cheers,
>>
>>Tom
>>
>>>Gary
>>>
>>>-----Original Message-----
>>>From: Unidata Support [mailto:address@hidden]=3D3D20
>>>Sent: Wednesday, February 20, 2008 3:04 PM
>>>To: Huffines, Gary
>>>Cc: Unidata Support
>>>Subject: 20080220: Unidata/IDD contact at UNCO (cont.)
>>>
>>>
>>>Hi Gary,
>>>
>>>re: IDD site contact at UNCO
>>>
>>>>That would be me.
>>>
>>>Very good.  I have updated our IDD site contact list to reflect the
>>>fact that you are the contact.
>>>
>>>>Sorry about the WSI request.
>>>
>>>No worries.
>>>
>>>>I am still learning
>>>>about the IDD feeds and such.  I have commented out that request and
>>>>restarted the ldm.
>>>
>>>We are still seeing WSI feed requests from tornado.unco.edu.  Can
>>>you recheck your ~ldm/etc/ldmd.conf file to make sure that all
>>>request lines for WSI are commented out or deleted and then restart
>>>your LDM?  Thanks!
>>>
>>>>By the way, could you help me out some with the installation of the
>>>>GEMPAK decoders?  I have been trying to figure that out without much
>>>>success.
>>
>>>Sure.  I put this request into our inquiry tracking system and answer
>>>you from there.
>>>
>>>>Thanks!
>>>
>>>Thank you!
>>>
>>>Cheers,
>>>
>>>Tom
>>>
>>>>Gary
>>>>
>>>>-----Original Message-----
>>>>From: Unidata Support [mailto:address@hidden]=3D3D3D20
>>>>Sent: Wednesday, February 20, 2008 2:11 PM
>>>>To: Huffines, Gary
>>>>Cc: Unidata User Support
>>>>Subject: 20080220: Unidata/IDD contact at UNCO
>>>>
>>>>
>>>>Hi Gary,
>>>>
>>>>Can you let us know who the current UNCO contact is for Unidata
>>>>Internet Data Distribution (IDD) related issues?
>>>>
>>>>Background:
>>>>
>>>>A request for WSI data is being made from tornado.unco.edu to
>>>>idd.unidata.ucar.edu.  This request will always be rejected on our
>end
>>>>since products in the WSI datastream are only available as
>>>>point-to-point transfers from WSI Corporation to the end user.
>>>>
>>>>The WSI request is causing a LOT of ~ldm/logs/ldmd.log failure log
>>>>messages to be generated on our end. It would be most helpful if that
>>>>request was removed or commented from the ~ldm/etc/ldmd.conf file on
>>>>tornado.unco.edu and the LDM restarted.
>>>>
>>>>Thanks in advance for any help you can provide!
>>>>
>>>>Cheers,
>>>>
>>>>Tom Yoksas
>>>>--
>>>>*********************************************************************
>*
>>><
>>>>Unidata User Support                              UCAR Unidata
>Program
>>><
>>>>(303)497-8643                                            P.O. Box
>3000
>>><
>>>>address@hidden                             Boulder, CO
>80307
>>><
>>>>---------------------------------------------------------------------
>-
>>><
>>>>Unidata Web Support               http://www.unidata.ucar.edu/support
>>><
>>>>*********************************************************************
>*
>>><
>>>>
>>>--
>>>**********************************************************************
>><
>>>Unidata User Support                              UCAR Unidata Program
>><
>>>(303)497-8643                                            P.O. Box 3000
>><
>>>address@hidden                             Boulder, CO 80307
>><
>>>----------------------------------------------------------------------
>><
>>>Unidata Web Support               http://www.unidata.ucar.edu/support
>><
>>>----------------------------------------------------------------------
>><
>>>NOTE: All email exchanges with Unidata User Support are recorded in
>the
>>>Unidata inquiry tracking system and then made publicly available
>>>through the web.  If you do not want to have your interactions made
>>>available in this way, you must let us know in each email you send to
>>>us.
>>>
>>--
>>**********************************************************************
><
>>Unidata User Support                              UCAR Unidata Program
><
>>(303)497-8643                                            P.O. Box 3000
><
>>address@hidden                             Boulder, CO 80307
><
>>----------------------------------------------------------------------
><
>>Unidata Web Support               http://www.unidata.ucar.edu/support
><
>>----------------------------------------------------------------------
><
>>NOTE: All email exchanges with Unidata User Support are recorded in the
>>Unidata inquiry tracking system and then made publicly available
>>through the web.  If you do not want to have your interactions made
>>available in this way, you must let us know in each email you send to
>>us.
>>
>--
>********************************************************************** <
>Unidata User Support                              UCAR Unidata Program <
>(303)497-8643                                            P.O. Box 3000 <
>address@hidden                             Boulder, CO 80307 <
>---------------------------------------------------------------------- <
>Unidata Web Support               http://www.unidata.ucar.edu/support  <
>---------------------------------------------------------------------- <
>NOTE: All email exchanges with Unidata User Support are recorded in the
>Unidata inquiry tracking system and then made publicly available
>through the web.  If you do not want to have your interactions made
>available in this way, you must let us know in each email you send to
>us.
>
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