The 4GB problem

[David Van Assche]

Hi Nicolas,
   I looked into the possibility of using edubuntu as a thin client server
for 'fat clients', sometimes called workstations... Basically, each client
gets its own chroot that is then adaptable by the end user. It requires more
space on the server, but it does allow for  more processing and ram usage by
the client. I am using a package called DRBL, which works wonderfully under
feisty (I'm currently testing it under Gutsy) but in theory, one could
create a plugin (there is something about that in launchpad, but to my
knowledge, its not finished) for LTSP 5 that does this too. Someone with
more knowledge might be able to help here. In any case, take a look into
DRBL, it was quite easy to install and works wonderfully, although
uninstalling it is a real pain... (http://drbl.sourceforge.net/)

Kind Regards,
David Van Assche

On 10/29/07, Jim Kronebusch <jim at winonacotter.org> wrote:
>
> On Mon, 29 Oct 2007 15:09:48 -0400, Nicolas Roussi wrote
> > Hi everybody,
> > I know this has been addressed before but I cannot find instaructions on
> how
> > to overcome it. I am a bit of a noob on this. I have an edubuntu
> > server 7.04setup with 40 thin clients. I installed the 32bit version
> > of the server and
> > have installed 8GB RAM on my Tyan s2925 with a dual Opteron 1220. Only
> > 3.4GBof RAM are recognized. I know there is a solution that you enable
> > some
> > feature in the kernel. Questions:
> > 1. COuld someone please point me towards some tutorial on how to do
> that?
> > Has anyone tried it before?
> > 2. Everyone of my users is pulling 150MB RAM for nautilus. Is this
> normal?
> > My clients have 512MB RAM and are dual core celerons. Is there a way to
> let
> > the clients do more processing?
> > Thanks in advance for everything.
> > Regards
>
> Do a "sudo apt-get install linux-image-server".  This will install a PAE
> enabled kernel
> that can recognize your extra RAM.  I run this successfully with a server
> containing
> 16GB of RAM.
>
> As to your RAM usage, that sounds normal.  Our users typically consume
> between 200-350MB
> RAM while using OpenOffice and Firefox.
>
> Jim
>
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