Re: BUG #8013: Memory leak

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On Sat, Mar 30, 2013 at 7:01 AM, <stiening(at)comcast(dot)net> wrote:

> The following bug has been logged on the website:
>
> Bug reference: 8013
> Logged by: Rae Stiening
> Email address: stiening(at)comcast(dot)net
> PostgreSQL version: 9.2.3
> Operating system: Suse Linux 9.3
> Description:
>
> The query:
> SELECT pts_key,count(*)
> FROM tm_tm_pairs GROUP BY pts_key HAVING count(*) !=1 ORDER BY
> pts_key
>
> Which is executed as:
> GroupAggregate (cost=108680937.80..119278286.60 rows=470993280 width=4)
> Filter: (count(*) <> 1)
> -> Sort (cost=108680937.80..109858421.00 rows=470993280 width=4)
> Sort Key: pts_key
> -> Seq Scan on tm_tm_pairs (cost=0.00..8634876.80 rows=470993280
> width=4)
>
> uses all available memory (32GB). pts_key is an integer and the table
> contains about 500 million rows.
>
> PostgreSQL 9.2.3 on x86_64-unknown-linux-gnu, compiled by gcc (SUSE Linux)
> 4.7.2 20130108 [gcc-4_7-branch revision 195012], 64-bit
> (
>
> compile options:
>
> env CFLAGS='-O3 -march=native' ./configure --with-segsize=128
>
>
>
>
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