linux-kernel - RE: [PATCH] slub Discard slab page only when node partials

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Date:	Sun, 09 Oct 2011 14:28:35 +0800
From:	"Alex,Shi" <alex.shi@...el.com>
To:	Christoph Lameter <cl@...two.org>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	"Chen, Tim C" <tim.c.chen@...el.com>,
	"Huang, Ying" <ying.huang@...el.com>,
	Andi Kleen <ak@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: RE: [PATCH] slub Discard slab page only when node partials >
 minimum setting

On Mon, 2011-10-03 at 23:21 +0800, Christoph Lameter wrote:
> On Sun, 2 Oct 2011, Shi, Alex wrote:
> 
> > >From my viewpoint, the patch is still helpful on server machines, while no clear
> > regression finding on desktop machine. So it useful.
> 
> Ok. We still have a few weeks it seems before the next merge phase.
> 

I tested multi-threads loopback netperf on our machines, no clear
regression or improvement find on our NHM-EP/NHM-EX/WSM-EP machine. 

but on our 4 sockets tigerton machine with 2048 clients, performance
increase 20% for TCP_RR subcase, and 10% for TCP_STREAM32 subcase;
and on our 2 sockets harpertown machine, the TCP_RR subcase increase
15%. 

The data is quite good! 

Don't find performance change on UDP_STREAM1 and UDP_RR1 subcase. 

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