linux-kernel - Re: [PATCH 8/8] Add VM counters for transparent hugepages

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Message-ID: <1298392586.9829.22566.camel@nimitz>
Date:	Tue, 22 Feb 2011 08:36:26 -0800
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, aarcange@...hat.com,
	lwoodman@...hat.com, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 8/8] Add VM counters for transparent hugepages

On Mon, 2011-02-21 at 11:07 -0800, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> I found it difficult to make sense of transparent huge pages without
> having any counters for its actions. Add some counters to vmstat
> for allocation of transparent hugepages and fallback to smaller
> pages.
> 
> Optional patch, but useful for development and understanding the system.

Very nice.  I did the same thing, splits-only.  I also found this stuff
a must-have for trying to do any work with transparent hugepages.  It's
just impossible otherwise.

Acked-by: Dave Hansen <dave@...ux.vnet.ibm.com>


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