[ldm-users] 20101022: LDM & Bandwidth management

• To: Art Wildman <Art.Wildman@xxxxxxxx>
• Subject: [ldm-users] 20101022: LDM & Bandwidth management
• From: Tom Yoksas <yoksas@xxxxxxxxxxxxxxxx>
• Date: Fri, 22 Oct 2010 14:32:10 -0600

Hi Art,

re:
>Thanks All, I had forgotten about the LDM Stats site. It is indeed
>useful for determining what LDM has done, however it is more difficult
>to pro-actively determine what bw impact adding a new feed may have
>limiting ldm to 300kbps.

The list of hourly volumes for a toplevel IDD relay node would likely
be of use in what I think you have in mind:

Statistics by Site
http://www.unidata.ucar.edu/cgi-bin/rtstats/siteindex

  idd.unidata.ucar.edu
  http://www.unidata.ucar.edu/cgi-bin/rtstats/siteindex?idd.unidata.ucar.edu

    Cumulative volume summary
    
http://www.unidata.ucar.edu/cgi-bin/rtstats/rtstats_summary_volume?idd.unidata.ucar.edu

The table shown shows how much data one could currently expect from each
IDD feed.  Here is the listing from the snapshot taken 5 minutes ago:

Data Volume Summary for idd.unidata.ucar.edu

Maximum hourly volume  12811.995 M bytes/hour
Average hourly volume   5910.999 M bytes/hour

Average products per hour     227293 prods/hour

Feed                           Average             Maximum     Products
                     (M byte/hour)            (M byte/hour)   number/hour
CONDUIT                2394.919    [ 40.516%]     6964.222    64178.674
NEXRAD2                1409.533    [ 23.846%]     1864.258    48595.957
NGRID                   701.629    [ 11.870%]     1655.741    14752.826
NEXRAD3                 594.287    [ 10.054%]      772.076    44989.913
HDS                     246.792    [  4.175%]      422.649    17519.826
FNMOC                   220.681    [  3.733%]     1300.566     1934.152
NIMAGE                  158.093    [  2.675%]      326.855      189.457
FNEXRAD                  77.316    [  1.308%]      101.569       70.891
IDS|DDPLUS               38.487    [  0.651%]       49.159    34217.370
EXP                      36.194    [  0.612%]       88.320      360.435
UNIWISC                  23.294    [  0.394%]       35.594       26.652
DIFAX                     3.548    [  0.060%]       12.810        5.109
GEM                       2.913    [  0.049%]       36.091      199.761
FSL2                      1.709    [  0.029%]        1.869       21.913
LIGHTNING                 1.606    [  0.027%]        3.452      229.761

re:
>Although I can dedicate machines to
>LDM, dedicating separate network connections for data is not currently
>in the cards. I will explore setting up LDM Stats; testing some
>feeds.

Cheers,

Tom
--
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* Tom Yoksas                                            UCAR Unidata Program *
* (303) 497-8642 (last resort)                                 P.O. Box 3000 *
* yoksas@xxxxxxxxxxxxxxxx                                  Boulder, CO 80307 *
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• References:
  • Re: [ldm-users] LDM & Bandwidth management
    • From: Art Wildman