Re: performance question (something to do w/ parameterized

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От Tom Lane
Тема Re: performance question (something to do w/ parameterized
Дата
Msg-id 2731.1147131457@sss.pgh.pa.us
обсуждение исходный текст
Ответ на Re: performance question (something to do w/ parameterized  (Jeffrey Tenny <jeffrey.tenny@comcast.net>)
Ответы Re: performance question (something to do w/ parameterized  (Klint Gore <kg@kgb.une.edu.au>)
Список pgsql-performance
Jeffrey Tenny <jeffrey.tenny@comcast.net> writes:
> The server was already running with random_page_cost=2 today for all tests, because of
> the mods I've made to improve other problem queries in the past (my settings noted below, and
> before in another msg on this topic).

> So to nail this particular query something additional is required (even lower random_page_cost?).
> What's a good value for slower processors/memory and database in memory?

If you're pretty sure the database will always be RAM-resident, then 1.0
is the theoretically correct value.

            regards, tom lane

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