Casey Bralla on 3 Jul 2012 12:29:53 -0700

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Re: [PLUG] Linux upgrade issues

On Tuesday, July 03, 2012 10:51:19 AM Rich Freeman wrote:
> On Tue, Jul 3, 2012 at 9:38 AM, Eric at <> 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

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