Re: Server with huge memory

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On Mon, Sep 22, 2008 at 10:53:38AM +0200, Bernd Petrovitsch wrote:
> On Mon, 2008-09-22 at 07:54 +0900, MinChan Kim wrote:
> > * Rik van Riel (riel@xxxxxxxxxxx) wrote:
> [....]
> > > The second option is to rewrite part of the VM so less
> > > metadata is kept for page cache.  Specifically, you will
> > > have to write code to reclaim buffer heads from page
> > > cache pages.
> >
> > Do You mean current page reclaim mechanism have a problem ?
>
> Only on insane installations.
>
> > As you know, kernel already have reclaimed fs-specific metadata.
> > What is a problem?
>
> That people run a 32bit x86 kernel with 64GB RAM on x86_64 hardware
> (obviously - 32bit cannot address 64GB RAM anyways) with no good reason.

On Intel Pentium III and later it can, using PAE and/or PSE 36 bit
physical addresses.

>
> 	Bernd
> --
> Firmix Software GmbH                   http://www.firmix.at/
> mobil: +43 664 4416156                 fax: +43 1 7890849-55
>           Embedded Linux Development and Services
>
>

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