On Tue, 5 Aug 2003, Shridhar Daithankar wrote: > On 5 Aug 2003 at 14:15, Peter Childs wrote: > > > On Tue, 5 Aug 2003, Shridhar Daithankar wrote: > > > > > On 5 Aug 2003 at 8:09, Jeff wrote: > > > > > > I would suggest autovacuum daemon which is in CVS contrib works for 7.3.x as > > > well.. Or schedule a vacuum analyze every 15 minutes or so.. > > > > I've just got autovacum up and Since we have had a lot of talk > > about it recently..... I thought some feed back might be useful. > > It seams to work quite well. But can be rather zelous on its > > analysing for the first few hours. Curretly its analysig static (ie > > nothigs changed) tables every 10minites. Vacuums seam to be about right. > > I think that many vacuums may be slowing does my database....
Sorry typo big time it should read "I think that may analysing may may be slowing down my database. > > IIRC there is per operation threshold. If update threshold is 5% and table is > 2% updatedit, then it should not look at it at all. I left it with debug over night and it improved to that after 5 hours. switch the debug down (to 1) this morning and it has not settled down yet. > > It's worth mentioning that you should start auto vacuum daemon on a clean > database. i.e. no pending vacuum. It is not supposed to start with a database > which has lots of clean up pending. The essence of auto vacuum daemon is to > maintain a clean database in clean state.. > > I agree, specifying per table thresholds would be good in autovacuum.. Peter Childs ---------------------------(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