linux-kernel - RE: Regression with SLUB on Netperf and Volanomark

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Date:	Fri, 4 May 2007 18:02:32 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Tim Chen <tim.c.chen@...ux.intel.com>
cc:	"Chen, Tim C" <tim.c.chen@...el.com>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	"Zhang, Yanmin" <yanmin.zhang@...el.com>,
	"Wang, Peter Xihong" <peter.xihong.wang@...el.com>,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: RE: Regression with SLUB on Netperf and Volanomark

On Fri, 4 May 2007, Tim Chen wrote:

> On Thu, 2007-05-03 at 18:45 -0700, Christoph Lameter wrote:
> > Hmmmm.. One potential issues are the complicated way the slab is 
> > handled. Could you try this patch and see what impact it has?
> > 
> The patch boost the throughput of TCP_STREAM test by 5%, for both slab
> and slub.  But slab is still 5% better in my tests.

Really? buffer head handling improves TCP performance? I think you have 
run to run variances. I need to look at this myself.


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