From: Tobias Brox <tobias@nordicbet.com>
To: Carlos Henrique Reimer <carlosreimer@yahoo.com.br>
Cc: pgsql-performance@postgresql.org
Subject: Re: Swapping
Date: Wed, 31 Aug 2005 21:22:17 +0200
Message-ID: <20050831192217.GC5736@tobias.lan> (raw)
In-Reply-To: <20050831182515.89931.qmail@web53209.mail.yahoo.com>
References: <20050831182515.89931.qmail@web53209.mail.yahoo.com>
[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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To: pgsql-performance@postgresql.org
Cc: tobias@nordicbet.com, carlosreimer@yahoo.com.br
Subject: Re: Swapping
In-Reply-To: <20050831192217.GC5736@tobias.lan>
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