linux-ext4 - Re: [PATCH 1/4] mm: Add tracepoints for LRU activation and insertions

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Message-ID: <5193C84A.8020802@redhat.com>
Date:	Wed, 15 May 2013 13:39:22 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Alexey Lyahkov <alexey.lyashkov@...il.com>,
	Andrew Perepechko <anserper@...ru>,
	Robin Dong <sanbai@...bao.com>, Theodore Tso <tytso@....edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Bernd Schubert <bernd.schubert@...tmail.fm>,
	David Howells <dhowells@...hat.com>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	Linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Linux-ext4 <linux-ext4@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-mm <linux-mm@...ck.org>
Subject: Re: [PATCH 1/4] mm: Add tracepoints for LRU activation and insertions

On 05/13/2013 06:21 AM, Mel Gorman wrote:
> Using these tracepoints it is possible to model LRU activity and the
> average residency of pages of different types. This can be used to
> debug problems related to premature reclaim of pages of particular
> types.
>
> Signed-off-by: Mel Gorman <mgorman@...e.de>

Reviewed-by: Rik van Riel <riel@...hat.com>


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