linux-kernel - Re: No, really, stop trying to delete slab until you've finished making slub perform as well

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Message-ID: <48977330.4090501@cs.helsinki.fi>
Date:	Tue, 05 Aug 2008 00:22:56 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Rene Herman <rene.herman@...access.nl>
CC:	Matthew Wilcox <matthew@....cx>,
	Christoph Lameter <cl@...ux-foundation.org>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, Mel Gorman <mel@...net.ie>,
	andi@...stfloor.org, Rik van Riel <riel@...hat.com>
Subject: Re: No, really, stop trying to delete slab until you've finished
 making slub perform as well

Rene Herman wrote:
> On 03-08-08 23:25, Pekka Enberg wrote:
> 
>> Matthew Wilcox wrote:
> 
>>> Do we have to once again explain that slab still outperforms slub on at
>>> least one important benchmark?  I hope Nick Piggin finds time to finish
>>> tuning slqb; it already outperforms slub.
>>
>> No, you don't have to. I haven't merged that patch nor do I intend to 
>> do so until the regressions are fixed.
>>
>> And yes, I'm still waiting to hear from you how we're now doing with 
>> higher order page allocations...
> 
> General interested question -- I recently "accidentally" read some of 
> slub and I believe that it doesn't feature the cache colouring support 
> that slab did? Is that true, and if so, wasn't it needed/useful?

I don't know why Christoph decided not to implement it. Christoph?
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