linux-kernel - Re: [RFC PATCH] Implement slub fastpath with sequence number

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Message-ID: <Pine.LNX.4.64.0803112112090.3874@schroedinger.engr.sgi.com>
Date:	Tue, 11 Mar 2008 21:14:32 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Nick Piggin <nickpiggin@...oo.com.au>
cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] Implement slub fastpath with sequence number

On Wed, 12 Mar 2008, Nick Piggin wrote:

> The oracle/tpcc one I don't know if it has been fixed?

Ok can someone run this with git head? It could have been there because of 
the 4k alloc forwarding to the page allocator. tbench showed the same 
regression that is why I was fixing the tbench regression.

> > And FWIW, I don't like the patch because it makes the code very hairy.
> > But I don't see why we shouldn't merge SLUB fast-path optimizations if
> > they're clean and you have the numbers to show it's a gain even if
> > there are other remaining regressions.
> 
> I'm talking about this patch specifically though. It makes it much
> harder to work with.

Well the patch would need to be cleaned up a bit first.
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