Re: Finding lost memory + kernel messages explained

[Andi Kleen]

Imre Gergely <gimre@xxxxxxxxxxx> writes:
>
> That would be around 3896MB. My question is: where does the memory go?
> Is it normal to 'lose' that much (~130MB) ?

I wrote a paper about this topic some time ago.

http://halobates.de/memory.pdf
http://halobates.de/memorywaste.pdf

> One thing I tried was appending iommu=off at boot, which gave me back

That means if you have any devices that cannot addresses > 32bit they
will panic with that setting.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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