Re: Temp tables performance question

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От Bruce Momjian
Тема Re: Temp tables performance question
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Msg-id 200007131616.MAA24794@candle.pha.pa.us
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Ответ на Re: Temp tables performance question  (Tom Lane <tgl@sss.pgh.pa.us>)
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> It'd be possible to have them go through the "local buffer manager"
> for their entire lives, rather than only for the transaction in which
> they are created, as happens for ordinary tables.  This would avoid
> at least some shared-buffer-manipulation overhead.  I'm not sure it'd
> buy a whole lot, but it probably wouldn't take much work to make it
> happen, either.
> 
> I think it would be folly to try to make them use a different smgr or
> avoid WAL; that'd require propagating differences between ordinary and
> temp tables into way too many places.

Yes, temp table optimization hardly seems worth it.

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