Date: Wed, 21 Sep 2005 18:46:19 +0100 (BST)
From: Hugh Dickins <hugh@veritas.com>
To: Jay Lan <jlan@engr.sgi.com>
cc: Frank van Maarseveen <frankvm@frankvm.com>,
       Christoph Lameter <clameter@engr.sgi.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.6.14-rc2] fix incorrect mm->hiwater_vm and mm->hiwater_rss
In-Reply-To: <4331990A.80904@engr.sgi.com>
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 <4331990A.80904@engr.sgi.com>
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On Wed, 21 Sep 2005, Jay Lan wrote:
> 
> It is not really an issue of out-of-tree accounting package. The
> system accounting is based on very old technology and needs improvement.
> The issue we face is not an issue of one particular accounting package.
> 
> I think the best approach would be to wrap the mm usage accounting
> in a new CONFIG_ENHANCED_SYS_ACCT and leave it OFF by default so that
> people can still get the minimal accounting with
> CONFIG_BSD_PROCESS_ACCT.

Yes, please: that sounds right.  With macros which dissolve to nothing
when it's off, to avoid #ifdef CONFIG_....s throughout the source.c.
#ifdef around the mm fields themselves?  Probably best that way.

Still need a pointer in the Kconfig to some project that uses these.

Still sceptical that hiwater_vm and hiwater_rss are the magic
missing numbers which bring system accounting into the 21st century:
more to come?

Thanks,
Hugh
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