[WT-support] Network problem, explosion of duplicates

[Tõnno Vähk]

Something strange and very troubling happened at ES9C MS this weekend. I was
not there so I have tried to put the picture together. Maybe someone can
figure it out...

 

5 computers/stations were in the network. At some point error messages „Lost
UDP packets“ and I guess number 10035 (or 10034?) appeared. Also error
message „double QSO identified, network will be disabled“. After one of
those messages at one computer when RELOAD was done to restore network the
last QSO by that station was multiplied by thousands of times and
synchronized to other computers!

 

So I believe one QSO appeared over 90 000 (!) times (number of dupes
exploding thus in summary window) and the whole network and all computers
got very slow till Win-Test became totally not responsive.

 

In general 100,000 QSOs could be OK in log (I saw 200,000 was ok on Ducie)
so in addition to just QSO number something else severely loaded the network
and computers, some continuous syncronization of something or I don’t know.
It took a while now for QSOs to reach other computers (before network
totally froze).

 

The only way to get back to normal was to export Cabrillo log, clean it,
delete the old log and import the cabrillo back!

 

When doing Cabrillo it did not export all the QSOs  - is there a limit on
100 000 or so?? Last hour was gone.

 

Also, a new row appeared into Summary window before Band row with big
numbers. This column has not been shown anywhere in manual.

 

We have had this „double QSO identified, network will be disabled“ often
before. I would say on average 5 times in every 48 hour multi op operation
on some computer. But always RELOAD has restored the network and all fine.

 

Can anyone have any idea how this excessive multiplication of one QSO and
total paralyzing of the network can happen? What can be the reason?? It
happened two times during this contest and ruined any chances to compete for
top in EU. The thing is a mess but I tried to write everything I heard...

 

tonno

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