[nycbug-talk] odd memory issue on

Brett Wynkoop nycbug at wynn.com
Thu Oct 18 16:22:07 EDT 2012


On Thu, 18 Oct 2012 15:29:08 -0400
John Baldwin <jhb at freebsd.org> wrote:

> The real memory thing can lie a bit in modern versions since it is
> not based on a count of actual memory but based on what the SMBIOS
> tables say about the available RAM sticks.  That said, when a DIMM
> fails I usually see it not be reported via SMBIOS either.  Can you do
> a verbose boot and capture the 'SMAP=' lines at the very beginning
> (you'll have to page up on a VGA console or use a serial console,
> they are output too early to be captured in the message buffer dumped
> by 'dmesg')?  Alternatively, I think there is a 'smap' or 'show smap'
> command in the loader that can dump these from the loader prompt (and
> then you can take a picture).  Those lines will tell you how much RAM
> the BIOS really says is available to the OS as opposed to the sticks
> that SMBIOS says are installed.
> 

Greeting-

Great tip on the SMAP thing.  I will take a look it and see what I
figure out based on that.

Thanks!

-Brett

-- 

wynkoop at wynn.com
917-642-6924
718-717-5435



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