From: Tom Lane <tgl@sss.pgh.pa.us>
To: James Mansion <james@mansionfamily.plus.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: temp tables
Date: Thu, 13 Mar 2008 20:01:45 -0400
Message-ID: <27663.1205452905@sss.pgh.pa.us> (raw)
In-Reply-To: <47D9A5E7.1010802@mansionfamily.plus.com>
References: <47D9A5E7.1010802@mansionfamily.plus.com>
James Mansion <james@mansionfamily.plus.com> writes:
> Do CREATE TEMP TABLE table have any special treatment regarding eliding
> sync operations
Yes; neither fsync nor WAL-writing is done for temp tables.
> or deferring creation of disk files in the case where memory pressure
> does not require a spill?
No. The trouble with doing something like that is we might be forced to
report an out-of-disk-space failure at some quite unintuitive point,
like during a SELECT.
regards, tom lane
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, james@mansionfamily.plus.com
Subject: Re: temp tables
In-Reply-To: <27663.1205452905@sss.pgh.pa.us>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox