Re: Can I compile a hugemem kernel?

[Andrew Perrin <clists@perrin.socsci.unc.edu>]

On Thu, 8 Mar 2007, Ron Johnson wrote:

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> On 03/08/07 15:11, Damien Ferrand wrote:
> > On 08/03/07 10:28 -0500, Andrew Perrin wrote:
> > > I seem to have developed a need for a single process (R) to use more than
> > > 3G of RAM. The system has 6G, and is doing virtually nothing else.  Is
> > > there a way to compile 2.6.18 or higher with the so-called hugemem patch
> > > under debian?
> > It looks like hugemem is a redhat thing... I don't know if it is
> > easy/possible to have it under debian. These kernels are generally heavily
> > patched.
> >
> > But even with this patch, a signle process will be limited to less than 4G of
> > memory. As the hugemem kernels have switching overhead check if you really
> > can't work in another way.
>
> Yes, you really need a 64-bit system for a single process to
> efficiently use more than 1 (or is it 2?) GB or memory.

The consensus elsewhere seems to be that it's actually 3G per process, but 
that's still not enough for this application. Oh well....

ap

----------------------------------------------------------------------
Andrew J Perrin - andrew_perrin (at) unc.edu - http://perrin.socsci.unc.edu
Assistant Professor of Sociology; Book Review Editor, _Social Forces_
University of North Carolina - CB#3210, Chapel Hill, NC 27599-3210 USA
New Book: http://www.press.uchicago.edu/cgi-bin/hfs.cgi/00/178592.ctl