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Date: Sat, 30 Nov 2002 15:05:18 +0100
From: Steffen Moser <lists@steffen-moser.de>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Javier Marcet <jmarcet@pobox.com>, linux-kernel@vger.kernel.org
Subject: Re: Exaggerated swap usage
Message-ID: <20021130140518.GB1735@steffen-moser.de>
Mail-Followup-To: Rik van Riel <riel@conectiva.com.br>,
	Javier Marcet <jmarcet@pobox.com>, linux-kernel@vger.kernel.org
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* On Fri, Nov 29, 2002 at 02:31 PM (-0200), Rik van Riel wrote:

> On Fri, 29 Nov 2002, Javier Marcet wrote:
> 
> > In recent 2.4.20 pre and rc kernels ( I tend to use the ac branch ), I
> > had notice my system, when using X mainly, got terribly slow after some
> > use.
> 
> First, lets get one thing straight:  the problem is the slowness,
> not necessarily the swap usage.  

I've experienced a similar problem with "linux-2.4.20-rc2-ac3", 
"linux-2.4.20-rc4-ac1" and "linux-2.4.20-ac1". At first I also
thought it's a swap problem, but this seems to be a wrong con-
clusion, too. 

The problem occurs, for example, when Mozilla and RealPlayer are
running and I start to compile something or copy large files. The 
RealPlayer interrupts, the mouse sometimes doesn't move smoothly 
any more, and so on. 

Using "linux-2.4.20" I don't see this behaviour.

I've collected some information when running "linux-2.4.20-ac1" 
and "linux-2.4.20". I've uploaded it to:

  http://www.uni-ulm.de/~s_smoser/lkml/

The "vmstat"- and "ps"-files were created during the "cp" of about 
2,5 GB of data from one hard disk to the other one. 

Bye,
Steffen
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