Re: Out of Memory - 8.2.4
От | Tom Lane |
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Тема | Re: Out of Memory - 8.2.4 |
Дата | |
Msg-id | 8637.1188414807@sss.pgh.pa.us обсуждение исходный текст |
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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