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Date: Tue, 26 Nov 2013 15:57:41 -0500
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [patch 7/9] mm: thrash detection-based file cache sizing
Message-ID: <20131126205741.GF22729@cmpxchg.org>
References: <1385336308-27121-1-git-send-email-hannes@cmpxchg.org>
 <1385336308-27121-8-git-send-email-hannes@cmpxchg.org>
 <5293FFC7.5070907@gmail.com>
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To: Ryan Mallon <rmallon@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Dave Chinner <david@fromorbit.com>, Rik van Riel <riel@redhat.com>, Jan Kara <jack@suse.cz>, Vlastimil Babka <vbabka@suse.cz>, Peter Zijlstra <peterz@infradead.org>, Tejun Heo <tj@kernel.org>, Andi Kleen <andi@firstfloor.org>, Andrea Arcangeli <aarcange@redhat.com>, Greg Thelen <gthelen@google.com>, Christoph Hellwig <hch@infradead.org>, Hugh Dickins <hughd@google.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Mel Gorman <mgorman@suse.de>, Minchan Kim <minchan.kim@gmail.com>, Michel Lespinasse <walken@google.com>, Seth Jennings <sjenning@linux.vnet.ibm.com>, Roman Gushchin <klamm@yandex-team.ru>, Ozgun Erdogan <ozgun@citusdata.com>, Metin Doslu <metin@citusdata.com>, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org

On Tue, Nov 26, 2013 at 12:56:23PM +1100, Ryan Mallon wrote:
> > + *   fault ------------------------+
> > + *                                 |
> > + *              +--------------+   |            +-------------+
> > + *   reclaim <- |   inactive   | <-+-- demotion |    active   | <--+
> > + *              +--------------+                +-------------+    |
> > + *                     |                                           |
> > + *                     +-------------- promotion ------------------+
> > + *
> > + *
> > + *		Access frequency and refault distance
> > + *
> > + * A workload is trashing when its pages are frequently used but they
> 
> "thrashing".

Thanks ;)

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