linux-kernel - RE: Behaviour of the VM on a embedded linux

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Message-ID: <462ADBE7F1A69C438B7E2ED56007E6F5ABF7DF982F@exch10.BC-Int.NET>
Date:	Mon, 25 Aug 2008 09:58:12 +0200
From:	Wappler Marcel <Marcel.Wappler@...dgeco.net>
To:	Arjan van de Ven <arjan@...radead.org>,
	Ingo Oeser <ioe-lkml@...eria.de>
CC:	Alex Riesen <raa.lkml@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: Behaviour of the VM on a embedded linux

Arjan van de Ven wrote:
> On Mon, 25 Aug 2008 01:35:49 +0200
> Ingo Oeser <ioe-lkml@...eria.de> wrote:
>
>> Is the application linked statically? If not, code pages might be
>> mapped privately and have been written to due to relocation.
>>
>> Link everything statically to avoid this.
>
> ... static linking has severe downsides though. You can also just use
> prelink to avoid relocations in practice.

Hm. I did a
cat /proc/`pidof thebigbinary`/smaps | grep Dirty
and got only about 3 MByte of dirty data. So it looks like this is not the (whole) problem (just a part). The Rss part of the /proc/pid/smaps report counts to about 14 MBytes. What is this saying exactly? I thought, those are the pages which aren't stealed by the VM from the app. Am I right?

Marcel
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