| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | neto brpr <netobrpr(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Cost Model |
| Date: | 2017-12-20 19:32:03 |
| Message-ID: | CAKFQuwZ71myJj1aOFv0_P_Z-NQi-LF490SmSP09oq7paXUo9LQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Dec 20, 2017 at 12:26 PM, neto brpr <netobrpr(at)gmail(dot)com> wrote:
>
> About what you said, that some settings can be configured by Tablespace?
> I have already seen this in IBM DB2, but in Postgresql as far as I know,
> for example the Random_page_cost and Seq_page_cost parameters are
> configured for the Integer Database and not for Tablespace, ok?.
> You or someone can tell me if cost parameters can be configured by
> Tablespace, this would be useful for me, thinking of a server that has
> hybrid storage environment (HDD x SSDs), I could leave some in a tablespace
> with HDD adapted settings and the same way for when I have an SSD disk.
>
ALTER TABLESPACE
https://www.postgresql.org/docs/10/static/sql-altertablespace.html
David J.
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