linux-kernel - Re: [RFC/PATCH] ext3: remove inode constructor

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Date:	Sat, 5 May 2007 12:08:55 +0300 (EEST)
From:	Pekka J Enberg <penberg@...helsinki.fi>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	sct@...hat.com, adilger@...sterfs.com, clameter@....com
Subject: Re: [RFC/PATCH] ext3: remove inode constructor

On Sat, 5 May 2007, Andrew Morton wrote:
> I doubt if this is measurable, really.  It'll be something like the
> difference between an L1 hit and an L2 hit in amongst all the other stuff
> we do on a per-inode basis.

The cache effects are probably not easily measurable but I was worried 
about CPU time. The slab constructors and destructors were originally 
designed to reduce CPU time spent on initializing objects. But I don't 
think that's relevant anymore on todays CPUs.

			Pekka
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