Hi. I've noticed that autovac. process worked more than 10 minutes, during this zabbix logged more than 90% IO disk utilization on db volume....
===========>29237 2016-03-02 15:17:23 EET 00000 [24-1]LOG: automatic vacuum of table "lb_upr.public._reference32": index scans: 1 pages: 0 removed, 263307 remain tuples: 298 removed, 1944753 remain, 0 are dead but not yet removable buffer usage: 67814 hits, 265465 misses, 15647 dirtied avg read rate: 3.183 MB/s, avg write rate: 0.188 MB/s *system usage: CPU 5.34s/6.27u sec elapsed 651.57 sec* Is it possible to log autovac. io impact during it execution? Is there any way to limit or "nice" autovac. process? Thanks to all for any help.