Message-Id: <6.2.1.2.2.20050516164236.05922a30@mail.tekno-soft.it>
Date: Mon, 16 May 2005 16:50:55 +0200
To: Eric Dumazet <dada1@cosmosbay.com>
From: Roberto Fichera <kernel@tekno-soft.it>
Subject: Re: How to use memory over 4GB
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <4288AB6A.3060106@cosmosbay.com>
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At 16.17 16/05/2005, Eric Dumazet wrote:

>Roberto Fichera a ?crit :
>
>>
>>>But still you need a 4GB/4GB user/kernel split, because the standard is 
>>>3GB/1GB.
>>
>>Why I need 4GB/4GB split? What are the beneficts?
>
>Well... 4GB for your process is better than 3GB, that's 33% more space...

Right! So, the 4GB/4GB split and tmpfs pair should be the best solution to
address as much memory possible on a single user process.

>If your process is cpu bounded (and not issuing too many system calls),
>then 4GB/4GB split let it address more ram, reducing the need to shift 
>windows in
>mmaped files for example.

... any source code that explain better what you say ;-)!


>Eric
>

Roberto Fichera. 

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