linux-kernel - Re: [RFC PATCH 4/5] mm: Add hit/miss accounting for Page Cache

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Message-ID: <1299085326.8493.820.camel@nimitz>
Date:	Wed, 02 Mar 2011 09:02:06 -0800
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Liu Yuan <namei.unix@...il.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, jaxboe@...ionio.com, akpm@...ux-foundation.org,
	fengguang.wu@...el.com, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [RFC PATCH 4/5] mm: Add hit/miss accounting for Page Cache

On Wed, 2011-03-02 at 09:45 +0100, Ingo Molnar wrote:
> But, instead of trying to improve those aspects of our existing instrumentation 
> frameworks, mm/* is gradually growing its own special instrumentation hacks, missing 
> the big picture and fragmenting the instrumentation space some more.
> 
> That trend is somewhat sad. 

Go any handy examples of how you'd like to see these done?

We're trying to add a batch of these for transparent huge pages, and
there was a similar set for KSM, so there's certainly no shortage of
potential sites.

-- Dave

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