From: Eric Dumazet <dada1@cosmosbay.com>
To: Roberto Fichera <kernel@tekno-soft.it>
Cc: linux-kernel@vger.kernel.org
Subject: Re: How to use memory over 4GB
Date: Mon, 16 May 2005 16:17:14 +0200 [thread overview]
Message-ID: <4288AB6A.3060106@cosmosbay.com> (raw)
In-Reply-To: <6.2.1.2.2.20050516151659.077cceb0@mail.tekno-soft.it>
Roberto Fichera a écrit :
>
>> 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...
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.
Eric
next prev parent reply other threads:[~2005-05-16 14:17 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-16 12:42 How to use memory over 4GB Roberto Fichera
2005-05-16 12:56 ` Michael Tokarev
2005-05-16 13:16 ` Roberto Fichera
2005-05-16 15:10 ` William Lee Irwin III
2005-05-16 15:47 ` Roberto Fichera
2005-05-16 15:54 ` William Lee Irwin III
2005-05-16 16:37 ` Roberto Fichera
2005-05-16 19:14 ` Bill Davidsen
2005-05-16 12:57 ` Eric Dumazet
2005-05-16 13:18 ` Roberto Fichera
2005-05-16 14:17 ` Eric Dumazet [this message]
2005-05-16 14:50 ` Roberto Fichera
2005-05-16 21:34 ` Nix
2005-05-17 7:15 ` Roberto Fichera
2005-05-16 15:22 ` William Lee Irwin III
-- strict thread matches above, loose matches on Subject: below --
2005-05-16 12:55 li nux
2005-05-16 13:06 ` Roberto Fichera
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