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20040625: redundant IDD requests

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  • Subject: 20040625: redundant IDD requests
  • Date: Fri, 25 Jun 2004 16:20:08 -0600
>From: Harry Edmon <address@hidden>
>Organization: University of Washington
>Keywords: 200406252153.i5PLrOWb010109 IDD NIMAGE

Hi Harry,

re: feeds on emo that may be redundant to thelma

>The currently line I have in those machines is:
>
>request NIMAGE          "^(sat|satz)/ch[0-9]/"  emo.unidata.ucar.edu

This pattern is essentially the same as:

request NIMAGE ".*" emo.unidata.ucar.edu

Your regular expression is essentially getting everything.

>Where should I feed NIMAGE from?

The "operational" machine is thelma.ucar.edu, so I recommend feeding
from it.  I would like you to limit the request to one UW machine and
then relay the data internally, however.

I see that freshair has the following feed requests on thelma:

- one request for all of NNEXRAD|FNEXRAD|FSL2|WMO
- CONDUIT feed request split 5 ways

Can you try adding NIMAGE to the NNEXRAD|FNEXRAD|FSL2|WMO request?

request NNEXRAD|FNEXRAD|FSL2|WMO|NIMAGE ".*" thelma.ucar.edu

We can then keep track of the realtime stats to make sure that this is
not too many feeds for a single requesting rpc.ldmd.  If it is (i.e.,
if we see latencies climb), I recommend splitting the request as
follows:

request NNEXRAD|FNEXRAD|FSL2 ".*" thelma.ucar.edu
request NIMAGE|WMO ".*" thelma.ucar.edu

Thanks for the help!

Cheers,

Tom
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>From address@hidden  Fri Jun 25 17:05:27 2004

Done.

-- 
 Dr. Harry Edmon                        E-MAIL: address@hidden
 206-543-0547                           address@hidden
 Dept of Atmospheric Sciences           FAX:    206-543-0308
 University of Washington, Box 351640, Seattle, WA 98195-1640