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From: SeongJae Park <sj38.park@gmail.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: SeongJae Park <sjpark@amazon.com>,
	akpm@linux-foundation.org, SeongJae Park <sjpark@amazon.de>,
	acme@kernel.org, brendan.d.gregg@gmail.com, corbet@lwn.net,
	mgorman@suse.de, dwmw@amazon.com, amit@kernel.org,
	rostedt@goodmis.org, sj38.park@gmail.com, linux-mm@kvack.org,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Re: [PATCH 0/8] Introduce Data Access MONitor (DAMON)
Date: Mon, 20 Jan 2020 19:14:40 +0100
Message-ID: <20200120181440.7826-1-sj38.park@gmail.com> (raw)
In-Reply-To: <20200120165551.codmosqc2pkcunpa@box> (raw)

On Mon, 20 Jan 2020 19:55:51 +0300 "Kirill A. Shutemov" <kirill@shutemov.name> wrote:

> On Mon, Jan 20, 2020 at 05:27:49PM +0100, SeongJae Park wrote:
> > This patchset introduces a new kernel module for practical monitoring of
> > data accesses, namely DAMON.
> 
> Looks like it's not integrated with perf at all right? Why?
> Correlating measurements from different domains would help to see the
> bigger picture.

Right, it's not integrated with perf.  DAMON provides only its debugfs
interface.  Also I agree that correlating measurments will be helpful.  I do
not integrate DAMON with perf with this patchset for following reasons.

First of all, I think I have no deep understanding of perf, yet.  Partly for
the reason, I couldn't figure out the best way to integrate DAMON with perf.
Especially, I couldn't straightforwardly classify DAMON providing information
into one of the categories of the perf events I know.

Therefore, rather than integrating DAMON with perf in my arguable way and
increasing the complexity of the code, I decided to keep the interface as
simple and flexible as it can be for the first stage.  That said, I believe it
would be not too hard to integrate DAMON with perf in a future.


Thanks,
SeongJae Park

> 
> -- 
>  Kirill A. Shutemov
> 
> 


  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-20 16:27 SeongJae Park
2020-01-20 16:27 ` [PATCH 1/8] mm: " SeongJae Park
2020-01-20 16:27 ` [PATCH 2/8] mm/damon: Implement region based sampling SeongJae Park
2020-01-22  8:15   ` SeongJae Park
2020-01-20 16:27 ` [PATCH 3/8] mm/damon: Adaptively adjust regions SeongJae Park
2020-01-20 16:27 ` [PATCH 4/8] mm/damon: Apply dynamic memory mapping changes SeongJae Park
2020-01-20 16:30 ` [PATCH 5/8] mm/damon: Add debugfs interface SeongJae Park
2020-01-20 16:30   ` [PATCH 6/8] mm/damon: Add minimal user-space tools SeongJae Park
2020-01-20 16:30   ` [PATCH 7/8] Documentation/admin-guide/mm: Add a document for DAMON SeongJae Park
2020-01-20 16:30   ` [PATCH 8/8] mm/damon: Add kunit tests SeongJae Park
2020-01-20 16:55 ` [PATCH 0/8] Introduce Data Access MONitor (DAMON) Kirill A. Shutemov
2020-01-20 18:14   ` SeongJae Park [this message]
2020-01-27 16:53     ` Re: " sjpark

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