linux-kernel - RE: la la la la ... swappiness

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Message-ID: <Pine.LNX.4.63.0612032137380.17489@gockel.physik3.uni-rostock.de>
Date:	Sun, 3 Dec 2006 21:46:33 +0100 (CET)
From:	Tim Schmielau <tim@...sik3.uni-rostock.de>
To:	Aucoin <Aucoin@...ston.RR.com>
cc:	'Andrew Morton' <akpm@...l.org>, torvalds@...l.org,
	linux-kernel@...r.kernel.org, clameter@....com
Subject: RE: la la la la ... swappiness

On Sun, 3 Dec 2006, Aucoin wrote:

> during tar extraction ... inactive pages reaches levels as high as ~375000

So why do you want the system to swap _less_? You need to find some free 
memory for the additional processes to run in, and you have lots of 
inactive pages, so I think you want to swap out _more_ pages.

I'd suggest to temporarily add a swapfile before you update your system. 
This can even help in bringing your memory use to the state before if you 
do it like this
  - swapon additional swapfile
  - update your database software
  - swapoff swap partition
  - swapon swap partition
  - swapoff additional swapfile

Tim
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