| From: | Magnus Hagander <magnus(at)hagander(dot)net> |
|---|---|
| To: | Rodrigo Barboza <rodrigombufrj(at)gmail(dot)com> |
| Cc: | "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: pg_stat_tmp file |
| Date: | 2013-05-06 10:32:53 |
| Message-ID: | CABUevEw7jJjrV2ccHdYhnHQSq+WdF1AQvA6EyzE-e0wckzX+WA@mail.gmail.com |
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| Lists: | pgsql-admin |
On Fri, May 3, 2013 at 5:09 PM, Rodrigo Barboza <rodrigombufrj(at)gmail(dot)com> wrote:
> Hi, guys.
> Postgres doc says it is better to place the pgstat.stat file in ram disk.
> And it says that at shutdown, it is copied to global.
> What happens if postgres do not shutdown the usual way?
> If machine loses power, for example...
PostgreSQL always discards the statistics file on an unclean shutdown,
such as a powerloss, regardless of where it's stored. Therefor, it's
not a problem that it's stored on a ramdrive. This is because it
cannot be guaranteed to be consistent in that case.
--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/
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