Am 05.02.2018 um 14:14 schrieb Thomas Güttler:
What do you suggest to get some reliable figures?
sar is often recommended, see https://blog.2ndquadrant.com/in-the-defense-of-sar/.
Can you exclude other reasons like vacuum / vacuum freeze? Regards, Andreas -- 2ndQuadrant - The PostgreSQL Support Company. www.2ndQuadrant.com