From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rik van Riel <riel@redhat.com>
Subject: Re: [patch 21/21] slab defrag: Obsolete SLAB
Date: Sat, 10 May 2008 22:15:15 -0400
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Cc: Christoph Lameter <clameter@sgi.com>, akpm@linux-foundation.org,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	Mel Gorman <mel@skynet.ie>,
	Pekka Enberg <penberg@cs.helsinki.fi>, mpm@selenic.com
To: Andi Kleen <andi@firstfloor.org>
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On Sat, 10 May 2008 11:53:30 +0200
Andi Kleen <andi@firstfloor.org> wrote:

> Christoph Lameter wrote:
> > Slab defragmentation introduces new functionality not supported by SLAB and
> > SLOB.
> > 
> > Make slab depend on EXPERIMENTAL and note its obsoleteness and that
> > various functionality is not supported by SLAB.
> > 
> > Also update SLOB's description a bit to indicate that certain OS
> > support is limited by design.
> 
> What about the TPC performance regressions? My understanding was that
> slub still performed worse in the "object allocated on one CPU, freed on
> the other CPU" type workloads due to less batching.

Which can be the majority of object allocations and frees in some
workloads.  It definately wants fixing.

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