[jadmin] Jabberd2 stats?

[rek2]

I was reading:
http://jabberd2.xiaoka.com/wiki/InstallGuide/CommonAdministrativeTasks

but I cant find what I am looking for..
I am looking for a way to know howmany people is online(using my 
jabberd2 servers) at that moment..
from a xmpp command or a mysql search will work as well..
Obviosly I can tell how many registered accounts there are by a sql 
search ;-) but what about how many using it?

Thanks

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