[SFDXA] Another LOTW data point

[Kai Siwiak]

Here are a few more notes on LOTW processing:

Today LOTW has a QSO backlog of Q=9,070,997 QSOs. We don't know if duplicate 
logs or dupe QSO are included in that number.
I took a snapshot of the QSO total yesterday and 23 H 8 M later today. The rate 
at which new QSOs are generated is R=176,883 QSOs per day.
That QSO total is now 462,492,669 QSOs.  Note that in June/July LOTW was 
processing QSOs a rate of 390,000 QSOs per day!!

If the backlog (Q) is the number after dupe uploads are removed then the current 
queue will take Q/R=51.3 days to clear.
They are currently working on logs that are about 10 days old, and that delay 
seems to be holding steady for a few days, so I suspect that around 80% of the 
backlog contains dupe uploads which must be filtered out before further 
processing to find a match.

This all points to predictable bottle necks in data processing that can not be 
cured simply with faster hardware.

73
Kai, KE4PT