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Date: Wed, 17 Jul 2002 17:37:36 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
X-X-Sender: riel@imladris.surriel.com
To: Daniel Phillips <phillips@arcor.de>
cc: Robert Love <rml@tech9.net>, Andrew Morton <akpm@zip.com.au>,
       Linus Torvalds <torvalds@transmeta.com>,
       lkml <linux-kernel@vger.kernel.org>
Subject: Re: [patch 1/13] minimal rmap
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On Wed, 17 Jul 2002, Daniel Phillips wrote:

> It can be fixed in kernel too, it's just that the effort would be poorly
> spent at this point.  This is in roughly the same category as process-level
> paging policy: yes, if it's implemented properly the VM appears to work
> better and users will post nice things on lkml about it, but it's a red
> herring.  Such adjustments are better left for later in the cycle, when
> the smoke has cleared from the basic merge, and benchmarks should focus
> narrowly on behaviour that is actually affected by the change in scanning
> strategy.

I don't agree with this, for a very simple reason.

The current rmap patch was created in order to change the
VM behaviour as little as possible and ONLY provide an
infrastructure.  Benchmarking a completely untuned thing
that was built to not change anything is bound to give
meaningless results.

I say we _use_ the infrastructure that akpm is trying to
get merged now in order to implement something useful.

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

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