Re: Swapping - Mailing list pgsql-performance

From Tobias Brox
Subject Re: Swapping
Date
Msg-id 20050831192217.GC5736@tobias.lan
Whole thread Raw
In response to Swapping  (Carlos Henrique Reimer <carlosreimer@yahoo.com.br>)
Responses Re: Swapping  (Tobias Brox <tobias@nordicbet.com>)
List pgsql-performance
[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 ;-)

--
Notice of Confidentiality: This email is sent unencrypted over the network,
and may be stored on several email servers; it can be read by third parties
as easy as a postcard.  Do not rely on email for confidential information.

pgsql-performance by date:

Previous
From: "Morgan Kita"
Date:
Subject: Big question on insert performance/using COPY FROM
Next
From: Tobias Brox
Date:
Subject: Re: Swapping