I thank you very much for trying to help me.
But there is really almost no load on the server. All migrations are finished.
top - 14:03:50 up 16 days, 22:04, 1 user, load average: 0,11, 0,21, 0,23
Tasks: 243 gesamt, 1 laufend, 242 schlafend, 0 gestoppt, 0 Zombie
%CPU(s): 0,1 be, 0,1...