[wxqc] Another set of old data

[Gerry Creager]

Falling back to T2 is not a sustainable strategy, though.  It makes more 
sense to fail over to another CWOP-dedicated server.  Please consider 
this in the future.

It would make a LOT more sense to have the CWOP-dedicated servers listed 
than to arbitrarily fail over to a T2 server.

gerry

Steve wrote:
> As a fallback, VPLive tries to send data to tier 2 servers if its 
> attempt at sending to the CWOP rotation fails. With CWOP-2 having 
> problems lately, but remaining in the rotation, this fallback has been 
> kicking in occasionally. Although not I understand it's not the 
> recommended first choice, I was not aware of there being a problem 
> sending to tier 2 as an alternative, and I think it was even mentioned 
> on this forum once or twice.
>  
> I don't think the time issue is in VPLive because the data packet is 
> constructed first. Then it tries to send that packet to the server 
> pointed to by the CWOP rotation. If that fails, then VPLive tries to 
> send the same packet to the tier 2 server.
>  
> With the data now being sent less frequently, problems with the CWOP 
> servers can result in some big gaps in the data. The fallback strategy 
> VPLive uses seemed like a good way of insuring the data gets through. 
> When the CWOP rotation is working, VPLive will not use tier2.
>  
> Steve
> SoftWx
> 
>     ----- Original Message -----
>     *From:* Storm Alert Inc. <mailto:ebookbinder at interwarn.com>
>     *To:* 'Discussion of weather data quality issues'
>     <mailto:wxqc at lists.gladstonefamily.net>
>     *Sent:* 04/07/2008 1:56 PM
>     *Subject:* [wxqc] Another set of old data
> 
>     Gerry, et. al.,
>      
>     You can see there are two old observations once again inserted in my
>     stream (0631Z and 0616Z) that occurred shortly after 11:15 CDT this
>     morning. These are coming from an unattended computer, and the
>     VPLive software does not archive data or have the ability to
>     re-transmit old data. Nonetheless, I checked the logs from this
>     program and my own Internet activity and there a nothing but
>     emptiness between 1616Z and 1621Z when two correct transmissions
>     took place.
>      
>     WX2CHS>APRS,TCPXX*,qAX,CWOP-1:@071611z3854.60N/09419.45W_037/002g004t048r000P000p000h50b10206VL1112
> 
>     WX2CHS>APRS,TCPXX*,qAX,T2PSR:@071616z3854.60N/09419.45W_034/001g004t048r000P000p000h51b10206VL1112 ->>
>     -->
>     WX2CHS>APRS,TCPXX*,qAX,T2PSR:@070631z3854.60N/09419.45W_352/002g009t047r000P000p001h46b10160VL1112
> 
>     -->
>     WX2CHS>APRS,TCPXX*,qAX,T2SGX:@070616z3854.60N/09419.45W_346/000g004t047r000P000p001h45b10158VL1112
> 
>     WX2CHS>APRS,TCPXX*,qAX,CWOP-3:@071621z3854.60N/09419.45W_058/002g004t047r000P000p000h51b10205VL1112
> 
>     WX2CHS>APRS,TCPXX*,qAX,CWOP-3:@071626z3854.60N/09419.45W_053/003g005t047r000P000p000h53b10205VL1112
> 
>     WX2CHS>APRS,TCPXX*,qAX,T2PSR:@071631z3854.60N/09419.45W_036/001g005t048r000P000p000h55b10206VL1112
> 
>     WX2CHS>APRS,TCPXX*,qAX,T2PSR:@071636z3854.60N/09419.45W_288/002g005t049r000P000p000h49b10208VL1112
> 
>      
>     I had been running on CWOP rotate to assist in some earlier
>     troubleshooting among the CWOP folks and software developers back
>     during the Winter server loading issues. Nonetheless, I can't see
>     how that would cause these old observations to be recycled into my
>     FindU data stream.
>      
>     Any ideas? Both instances I've observed this in the past week were
>     associated with a T2xxx server, if that makes any difference.
>      
>     Thanks,
>     Evan
>     NWS Kansas City
> 
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University
Cell: 979.229.5301 Office: 979.862.3982 FAX: 979.862.3983
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