| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: pg_stat_statements temporary file |
| Date: | 2012-05-28 11:14:52 |
| Message-ID: | 201205281314.53013.andres@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On Friday, May 25, 2012 05:19:28 PM Tom Lane wrote:
> Andres Freund <andres(at)2ndquadrant(dot)com> writes:
> > On Friday, May 25, 2012 04:03:49 PM Peter Geoghegan wrote:
> >> Where do you suggest the file be written to?
> >
> > One could argue stats_temp_directory would be the correct place.
>
> No, that would be exactly the *wrong* place, because that directory can
> be on a RAM disk. We need to put this somewhere where it'll survive
> a shutdown.
I had assumed it would do the writeout regularly to survive a database crash.
As it does not do that my argument is clearly bogus, sorry for that.
Andres
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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