linux-kernel - Re: which fields in /proc/meminfo are orthogonal?

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Date:	Tue, 26 Jan 2010 19:55:10 -0500
From:	Jeff Dike <jdike@...toit.com>
To:	Chris Friesen <cfriesen@...tel.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: which fields in /proc/meminfo are orthogonal?

On Tue, Jan 26, 2010 at 02:47:26PM -0600, Chris Friesen wrote:
> I've tried adding up
> MemFree+Buffers+Cached+AnonPages+Mapped+Slab+PageTables+VmallocUsed
> 
> (hugepages are disabled and there is no swap)
> 
> Shortly after boot this gets me within about 3MB of MemTotal.  However,
> after 1070 minutes there is a 64MB difference between MemTotal and the
> above sum.

I believe that pages allocated directly with get_free_pages won't show
up in your sum.  So, just look for someone doing a lot of that :-)

				Jeff
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