Re: [PLUG] Linux upgrade issues

[Casey Bralla <MailList@nerdworld.org>]

On Tuesday, July 03, 2012 10:51:19 AM Rich Freeman wrote:
> On Tue, Jul 3, 2012 at 9:38 AM, Eric at Lucii.org <eric@lucii.org> wrote:
> > So it is using almost 90% of RAM and almost half of the swap in "normal"
> > conditions. Also, why only 3 GB of RAM?  I have 4 GB of RAM and thought
> > that 64 bit systems would use ALL of it. [ Face palm... will run memory
> > test at next reboot - probably before noon :-( ]
> > 
> > Could this be related to a 64 bit kernel and should I just switch back to
> > 32 bit? I'm thinking of trying the 32 bit version of Ubuntu 12.04 and
> > adding KDE to get a usable GUI.
> > 
> > Your thoughts and/or suggestions?
> 
> 64-bit kernels shouldn't have much impact on memory use (some data
> structures use more space, but it is a minor difference if you aren't
> in some really crazy scenario).
> 
> Try running ps/atop/etc to figure out where that memory is going.
> Also check /proc/meminfo for stuff like slab use.  Figuring out what
> is wrong is a lot easier if you have some idea where the RAM is going,
> but it isn't always obvious what the root cause is.
> 
> Rich
>

I agree with Rich, but you may also want to verify that the RAM is good by 
running memtest.  Bad RAM can cause some strange errors too.

Casey Bralla

Chief Nerd in Residence
The NerdWorld Organisation

http://www.NerdWorld.org
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