Re: possible vacuum improvement?
От | Matthew T. OConnor |
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Тема | Re: possible vacuum improvement? |
Дата | |
Msg-id | 200209040000.03759.matthew@zeut.net обсуждение исходный текст |
Ответ на | Re: possible vacuum improvement? ("Christopher Kings-Lynne" <chriskl@familyhealth.com.au>) |
Список | pgsql-hackers |
On Tuesday 03 September 2002 23:47, Christopher Kings-Lynne wrote: > > I have been doing some poking around with this item, and I was > > planning on > > using the stats collector to do "intelligent" auto-vacuuming. I > > was planning > > on adding some new columns that account for activity that has taken place > > since the last vacuum. The current stats collector shows n_tup_ins, > > n_tup_upd and n_tup_del for any given rel, but those numbers have > > nothing to > > do with what has happened since the last vacuum, hence nothing to do with > > current status or need for vacuum. > > Postgres 7.3-beta has a new function 'pg_stat_reset()' that you can call to > reset the stats collector after a vacuum... Just my opinion here, but I don't think having autovac constantly resetting the stats is a good idea, it means that you lose the current stat functionality when using autovacuum, and also implies that the stats mean differnet things if autovac is turned on or off.
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