From: Tobias Brox
Subject: Re: Swapping
Date: ,
Msg-id: 20050831192217.GC5736@tobias.lan
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In response to: Swapping  (Carlos Henrique Reimer)
Responses: Re: Swapping  (Tobias Brox)
List: pgsql-performance

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Swapping  (Carlos Henrique Reimer, )
 Re: Swapping  (Tom Lane, )
 Re: Swapping  (Tobias Brox, )
  Re: Swapping  (Tobias Brox, )

[Carlos Henrique Reimer - Wed at 03:25:15PM -0300]
> I´m trying to tune a linux box with a 12 GB database and 4 GB RAM. First
> of all I would like to stop the swapping, so the shared_buffers and sort_mem
> were decreased but even so it started swapping two hours after DBMS started
> up.
>
> I would like to know some suggestions how to discover why is it swapping?

I agree with Tom Lane, nothing to worry about.  Swapping is not a problem
per se, aggressive swapping is a problem.  If you are absolutely sure you
want to ban all swapping, use "swapoff"?

I'd trust linux to handle swap/cache sensibly.  Eventually, become involved
with kernel hacking ;-)

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