Re: Out of Memory - 8.2.4
| От | Tom Lane |
|---|---|
| Тема | Re: Out of Memory - 8.2.4 |
| Дата | |
| Msg-id | 8637.1188414807@sss.pgh.pa.us обсуждение |
| Ответ на | Re: Out of Memory - 8.2.4 (Alvaro Herrera <alvherre@commandprompt.com>) |
| Ответы |
Re: Out of Memory - 8.2.4
Re: Out of Memory - 8.2.4 Re: Out of Memory - 8.2.4 |
| Список | pgsql-general |
Alvaro Herrera <alvherre@commandprompt.com> writes:
> I'm not having much luck really. I think the problem is that ANALYZE
> stores reltuples as the number of live tuples, so if you delete a big
> portion of a big table, then ANALYZE and then VACUUM, there's a huge
> misestimation and extra index cleanup passes happen, which is a bad
> thing.
Yeah ... so just go with a constant estimate of say 200 deletable tuples
per page?
regards, tom lane
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