Hi Jun (replying to all this time),

On Mon, Oct 15, 2012 at 12:58 AM, Jun Hu <[email protected]> wrote:
> Hi Guys:
> My machine has 8G memory, when I use kernel boot parameter mem=5G , it only
> display “4084 M” using “free –m “.
> where the “5120-4084 = 1036M “ memory run?

That's the memory taken up by the kernel itself.

-- 
Dave Hylands
Shuswap, BC, Canada
http://www.davehylands.com

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