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Date: Thu, 17 Apr 2008 07:01:29 -0700
From: Arjan van de Ven <arjan@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       Pekka Enberg <penberg@cs.helsinki.fi>, linux-kernel@vger.kernel.org,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>,
       Vegard Nossum <vegard.nossum@gmail.com>
Subject: Re: [v2.6.26] what's brewing in x86.git for v2.6.26
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On Thu, 17 Apr 2008 12:38:00 +0200
Ingo Molnar <mingo@elte.hu> wrote:

> 
> * Andrew Morton <akpm@linux-foundation.org> wrote:
> 
> > Thank you whoever wrote kmemcheck.txt
> > 
> > How come slub uses one byte to track the status of each byte when
> > it could use a single bit?
> > 
> > We (still!) have not made the decision whether to proceed with slab
> > or slub.  How hard would it be to port kmemcheck into slab?
> 
> i think slab is clearly out, unless some catastrophic regression is 
> found. 

SLUB still has that several percent TPC-C regression....
Christoph has a small reproducer testcase.


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