Re: [COMMITTERS] pgsql: Add temp_file_limit GUC parameter to constrain temporary file sp

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От Bruce Momjian
Тема Re: [COMMITTERS] pgsql: Add temp_file_limit GUC parameter to constrain temporary file sp
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Msg-id 201107172239.p6HMdJX12317@momjian.us
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Ответ на Re: [COMMITTERS] pgsql: Add temp_file_limit GUC parameter to constrain temporary file sp  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Re: [COMMITTERS] pgsql: Add temp_file_limit GUC parameter to constrain temporary file sp  (Peter Eisentraut <peter_e@gmx.net>)
Re: Re: [COMMITTERS] pgsql: Add temp_file_limit GUC parameter to constrain temporary file sp  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom Lane wrote:
> Bruce Momjian <bruce@momjian.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@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +


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