Re: How to use memory over 4GB

[Roberto Fichera]

At 23.34 16/05/2005, Nix wrote:
> On 16 May 2005, Roberto Fichera whispered secretively:
> > At 16.17 16/05/2005, Eric Dumazet wrote:
> >>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 ;-)!
>
> <http://lkml.org/lkml/2003/7/8/246> perhaps?

Yes! I already know this patch ... I was asking for some user space code,
just to show up the thinks ;-)!


> (In a nutshell: it gives processes an extra 1Gb of virtual memory, at
> the cost of making system calls --- and everything else that must
> transition to kernel space --- *much* slower.)
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Roberto Fichera. 

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