so here's a wierd one

[Daryl Herzmann]

Hi Tyler,

Do your log files show your LDM switching feeds when data starts flowing 
again?

I can't seem to fully resolve it, but the newer LDM seems to get confused 
when you have multiple hosts feeding you the same data types without 
specifying PRIMARY ALTERNATE. I dunno, I'm running into all sorts of 
strange LDM things lately :(

daryl

On Mon, 2 Apr 2007, Tyler Allison wrote:

> [for ldm-6.6.0 and ldm-6.6.2]
>
> If I use the following feed pattern [upstream = idd at wisc and bigbird at tamu]:
>
> request WMO
> "((WF|WO|WU|WR|WW|WG|AC|NW)US)|^S[AP]|^S[NS]|^WT(PZ|PN|PA|NT)|(^S[IMN]V[^GINS])|(^S[IMN]W[^KZ])|(^S(HV|HXX|S[^X]))|(^SX(VD|V.50|US(2[0-3]|08|40|82|86)))|(^Y[HO]XX84)|^A
> CUS11|/p(FTM|FWDDY)" upstream.server.edu
>
> the data seems to flow down to me in "chunks". What I mean by this is that
> is when I run 'ldmadmin watch' I see no data for between 4 and 10 minutes.
> Then all of a sudden the last 4-10 minutes worth of data comes down within
> a 3 second period. It then holds again...and 4-10 minutes later another
> payload of data comes down...etc...etc.
>
> If the *ONLY* thing I change is the feed pattern to:
>
> request WMO ".*" upstream.server.edu
>
> The data feed runs normal.
>
> I'm confused! I, and the upstream, have bandwidth to burn so I'm leaving
> the feed as ".*"...my pattern was attempting to conserve bandwidth for the
> upstream providers but it seems I did more harm than good.
>
> I havent totally verified this issue but it seems to be the culprit. Can
> anybody confirm?
>
> -Tyler
>
>
>
>

/**
  * Daryl Herzmann, RHCE
  * Program Assistant -- Iowa Environmental Mesonet
  * http://mesonet.agron.iastate.edu
  */