| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: [COMMITTERS] pgsql: Add temp_file_limit GUC parameter to constrain temporary file sp |
| Date: | 2011-07-17 22:39:19 |
| Message-ID: | 201107172239.p6HMdJX12317@momjian.us |
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| Lists: | pgsql-committers pgsql-hackers |
Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > Tom Lane wrote:
> >> Add temp_file_limit GUC parameter to constrain temporary file space usage.
> >>
> >> The limit is enforced against the total amount of temp file space used by
> >> each session.
> >>
> >> Mark Kirkwood, reviewed by C?dric Villemain and Tatsuo Ishii
>
> > Should we document that sessions that exceed this limit generate an
> > error? I don't see any mention of this in the docs.
>
> Huh? Seems like a waste of text to me. What else would happen?
Well, if we exceed work_mem, we spill to temp disk. If we exceed temp
disk, we error out. Those different behaviors don't seem obvious to me.
The work_mem docs do mention is spills to disk though, so maybe it is
OK.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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