linux-kernel - Re: SLUB: The unqueued Slab allocator

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Message-ID: <20070223001653.GA16108@one.firstfloor.org>
Date:	Fri, 23 Feb 2007 01:16:53 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Christoph Lameter <clameter@....com>
Cc:	Andi Kleen <andi@...stfloor.org>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: SLUB: The unqueued Slab allocator

On Thu, Feb 22, 2007 at 10:42:23AM -0800, Christoph Lameter wrote:
> On Thu, 22 Feb 2007, Andi Kleen wrote:
> 
> > >    SLUB does not need a cache reaper for UP systems.
> > 
> > This means constructors/destructors are becomming worthless? 
> > Can you describe your rationale why you think they don't make
> > sense on UP?
> 
> Cache reaping has nothing to do with constructors and destructors. SLUB 
> fully supports constructors and destructors.

If you don't cache constructed but free objects then there is no cache
advantage of constructors/destructors and they would be useless.

-Andi
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