On Tue, 10 Mar 2009 21:11:55 +0800
Wu Fengguang <fengguang.wu@intel.com> wrote:

> If we run eatmem or the following commands to take up free memory,
> the missing pages will show up :-)
> 
>         dd if=/dev/zero of=/tmp/s bs=1M count=1 seek=1024
>         cp /tmp/s /dev/null
> 

Not here, which now means I've "found" all of my missing 170 MB.

On 2.6.27, when I fill the page cache I still get over 90 MB left in
"noflags":

0x20000	     24394       95  _________________n  noflags

The same thing with 2.6.26 almost completely drains it:

0x20000	      3697       14  _________________n  noflags

Another interesting data point is that those 80 MB always seem to be
the exact same number of pages every boot.

Rgds
-- 
     -- Pierre Ossman

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