We are working on some things that might be able to help you. In general the 12,000 element limit is based on standard polling rate. If you change the polling rate then you will get more or less elements per poller. You will get more elements if you increase the interval and less if you decrease it (poll more quickly).
I've put your name on a list of people to contact as we work on being able to poll more on a single server.
Thanks for getting back :-)
I will try to refine my question.
I trying to get "a realistisk maximum number"
How much is too much?
Is that the MS SQL or TCP stack or Disk IO ..
I thing I could get that from real life deployment ...
so far we recommend 12K elements as a maximum per single poller. And it is usually DB what comes as a bottleneck.
Is this really a recommendation of 12k elements? Seems like a hard limit as throttling starts to kick in to extend the poll times.