Re: Free Cache Memory (Linux) and Postgresql - Mailing list pgsql-general

From Martijn van Oosterhout
Subject Re: Free Cache Memory (Linux) and Postgresql
Date
Msg-id 20080930220232.GA16909@svana.org
Whole thread Raw
In response to Re: Free Cache Memory (Linux) and Postgresql  (Denis Gasparin <denis@edistar.com>)
Responses Re: Free Cache Memory (Linux) and Postgresql  ("Scott Marlowe" <scott.marlowe@gmail.com>)
List pgsql-general
On Tue, Sep 30, 2008 at 03:51:44PM +0200, Denis Gasparin wrote:
> It seems like postgres or the operating system (linux) is keeping in
> cache that old data even if it has been deleted.

Just remember: "free memory" is "memory you paid for and are not
using" == "wasted memory". The OS knows damn well it's not important
and will throw it out if necessary, but it costs nothing to keep it.

Have a nice day,
--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> Please line up in a tree and maintain the heap invariant while
> boarding. Thank you for flying nlogn airlines.

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