Hi, in my first post you can see all params: maintenance_work_mem = 64MB and two workers. i configured my system to the absolutely minimum ( got 24 GB real memory) and the problem was still there. Last night i rebuilt one index (122GB Size) and just in this minutes i started a manual "analyze verbose planet_osm_ways" to see whats happening. this will need some hours. Regards walter -- View this message in context: http://postgresql.nabble.com/autovacuum-worker-running-amok-and-me-too-tp5840299p5840685.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general