Re: per table random-page-cost?
От | marcin mank |
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Тема | Re: per table random-page-cost? |
Дата | |
Msg-id | b1b9fac60910191517w137a0832h544ecd211697fb4e@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: per table random-page-cost? (Robert Haas <robertmhaas@gmail.com>) |
Ответы |
Re: per table random-page-cost?
Re: per table random-page-cost? Re: per table random-page-cost? |
Список | pgsql-hackers |
> I've been thinking about this a bit, too. I've been wondering if it > might make sense to have a "random_page_cost" and "seq_page_cost" > setting for each TABLESPACE, to compensate for the fact that different > media might be faster or slower, and a percent-cached setting for each > table over top of that. > I thought about making it per-table, but realistically I think most people don`t use tablespaces now. I would not want to be telling people "to be able to hint the planner to (not) index-scan the table, You must move it to a separate tablespace". A global default, a per-tablespace default overriding it, and a per-table value overriding them both seems like over-engineering to me. Greetings Marcin
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