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Re: Why do I have reading from the swap partition?

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Hi Scott,

Thank you for your answer, this is exactly what happens in this situation. 


--- On Fri, 7/22/11, Scott Marlowe <scott.marlowe@xxxxxxxxx> wrote:

> From: Scott Marlowe <scott.marlowe@xxxxxxxxx>
> Subject: Re:  Why do I have reading from the swap partition?
> To: "Ioana Danes" <ioanasoftware@xxxxxxxx>
> Cc: "PostgreSQL General" <pgsql-general@xxxxxxxxxxxxxx>
> Received: Friday, July 22, 2011, 3:24 PM
> On Fri, Jul 22, 2011 at 12:19 PM,
> Ioana Danes <ioanasoftware@xxxxxxxx>
> wrote:
> 
> > I do a select * from a 8 GB table (a different one
> then the one used in the query). At a point it starts using
> swap space on disk. Once it starts swapping I still let it
> run for couple of minutes and the I stop it (CTRL+C).
> 
> Are you running psql on the same machine?  My guess is
> that psql is
> what's swapping.  Try running:
> 
> select count(*) from (select * from mybigfreakingtable);
> 
> and see if you start hitting swap like that.
> 
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