linux-kernel - Re: [Follow-up] Physical memory disappeared from /proc/meminfo

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Message-ID: <87od3q26t4.fsf@basil.nowhere.org>
Date:	Mon, 18 Aug 2008 08:09:11 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	"Marc Villemade" <mastachand@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [Follow-up] Physical memory disappeared from /proc/meminfo

"Marc Villemade" <mastachand@...il.com> writes:
>
> I'm having exactly the same issue but on a 2.6.20.4 vanilla kernel
> (x86). /proc/meminfo shows that
> MemFree+Buffers+cached+AnonPages+Slab+Mapped != MemTotal, which AFAIK
> should be the case.

Nope, the equation is not necessarily true. 
See http://halobates.de/memorywaste.pdf for a detailed discussion.

-Andi
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