Re: [HACKERS] Temp Table Memory Leak

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От Bruce Momjian
Тема Re: [HACKERS] Temp Table Memory Leak
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Msg-id 200001170504.AAA11977@candle.pha.pa.us
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Ответ на Temp Table Memory Leak  (Kristofer Munn <kmunn@munn.com>)
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> Hi again...
> 
> I've discovered (or perhaps re-discovered) what seems to be a memory leak
> involving temp tables. It's so bad that I make a script (which runs as a
> daemon) close the backend connection and reconnect each time it runs the
> offending command sequences.  Without the reset I've seen the backend grow
> to over 100 megs in size in a matter of a couple of minutes.
> 
> I've created a sample case that reproduces the error that I will attach
> with this message.  Basically, I create a 50 column temp table (with no
> rows in it) and then run updates on each column in succession.  The
> backend gets large pretty quick - I'm seeing about 12Megs after running
> the enclosed script which does an update on all 50 columns 3 times (150
> updates).

Is this with 6.5.* or 7.0.  If it is 6.5.*, can you try it with our
current tree for testing purposes.  I think you will find it is fixed.

--  Bruce Momjian                        |  http://www.op.net/~candle pgman@candle.pha.pa.us               |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
Pennsylvania19026
 


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