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From: Ben Gamari <bgamari.foss@gmail.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: kosaki.motohiro@jp.fujitsu.com, Minchan Kim <minchan.kim@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-mm <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Wu Fengguang <fengguang.wu@intel.com>, Rik van Riel <riel@redhat.com>,
        Johannes Weiner <hannes@cmpxchg.org>, Nick Piggin <npiggin@kernel.dk>,
        Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH v2 1/3] deactivate invalidated pages
In-Reply-To: <20101129110848.82A8.A69D9226@jp.fujitsu.com>
References: <20101129090514.829C.A69D9226@jp.fujitsu.com> <87pqto3n77.fsf@gmail.com> <20101129110848.82A8.A69D9226@jp.fujitsu.com>
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Date: Sun, 28 Nov 2010 21:26:15 -0500
Message-ID: <8739qk3lx4.fsf@gmail.com>
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On Mon, 29 Nov 2010 11:13:53 +0900 (JST), KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
> I'm not againt DONT_NEED feature. I only said PG_reclaim trick is not
> so effective. Every feature has their own pros/cons. I think the cons
> is too big. Also, nobody have mesured PG_reclaim performance gain. Did you?
> 
Not yet. Finally back from vacation here in the States. I'll try sitting
down to put together a test tonight.

- Ben

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