| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Kenneth Marshall <ktm(at)rice(dot)edu>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, marcin mank <marcin(dot)mank(at)gmail(dot)com>, Andy Colson <andy(at)squeakycode(dot)net> |
| Subject: | Re: unlogged tables |
| Date: | 2010-11-17 21:06:23 |
| Message-ID: | 1290027668-sup-1551@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
Excerpts from Robert Haas's message of mié nov 17 17:51:37 -0300 2010:
> On Wed, Nov 17, 2010 at 3:35 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> > How can you get a buffer which was no written out *at all*? Do you want to
> > force all such pages to stay in shared_buffers? That sounds quite a bit more
> > complicated than what you proposed...
>
> Oh, you're right. We always have to write buffers before kicking them
> out of shared_buffers, but if we don't fsync them we have no guarantee
> they're actually on disk.
You could just open all the segments and fsync them.
--
Álvaro Herrera <alvherre(at)commandprompt(dot)com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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