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

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Message-ID: <20110307163513.GC13384@alboin.amr.corp.intel.com>
Date:	Mon, 7 Mar 2011 08:35:13 -0800
From:	Andi Kleen <ak@...ux.intel.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Andi Kleen <andi@...stfloor.org>, akpm@...ux-foundation.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/8] Add VM counters for transparent hugepages

> Don't we need to make per zone stastics? I'm afraid small dma zone 
> makes much thp-splitting and screw up this stastics.

Does it? I haven't seen that so far.

If it happens a lot it would be better to disable THP for the 16MB DMA
zone at least. Or did you mean the 4GB zone?

-Andi
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