Re: per-tablespace random_page_cost/seq_page_cost

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От Greg Stark
Тема Re: per-tablespace random_page_cost/seq_page_cost
Дата
Msg-id 407d949e0910261635p68e62de3oacd0b6b45b3b15a1@mail.gmail.com
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Ответ на Re: per-tablespace random_page_cost/seq_page_cost  (Josh Berkus <josh@agliodbs.com>)
Ответы Re: per-tablespace random_page_cost/seq_page_cost  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Mon, Oct 26, 2009 at 3:05 PM, Josh Berkus <josh@agliodbs.com> wrote:
> I'm thinking an array, in case we want to make other tablespace cost
> parameters in the future.*  Or, better, whatever structure we're
> currently using for ROLEs.
>
> (* for example, if someone does manage a filesystem with a separate
> cache space per mount, then we'd want effective_cache_size to be
> tablespace-based as well)

Still far from convinced on that one. But effective_io_concurrency
should be included even in the first pass.


--
greg


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