On Fri, May 13, 2005 at 03:52:38PM +0300, Mindaugas Riauba wrote: > Tables are not big (20000-150000 rows each) but have very high > turnover rate - 100+ updates/inserts/deletes/selects per second. > So contents of database changes very fast. Problem is that when > pg_autovacuum does vacuum those changes slows down too much. > And we keep autovacuum quite aggressive (-v 1000 -V 0.5 -a 1000 > -A 0.1 -s 10) to not bloat database and to avoid bigger impact. > analyze seems not to impact performance too much.
Are you using the bgwriter? See http://developer.postgresql.org/~wieck/vacuum_cost/ for details. /* Steinar */ -- Homepage: http://www.sesse.net/ ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
