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

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Date:	Thu, 8 Sep 2011 13:37:52 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	"Alex,Shi" <alex.shi@...el.com>
cc:	"penberg@...nel.org" <penberg@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Huang, Ying" <ying.huang@...el.com>,
	"Li, Shaohua" <shaohua.li@...el.com>,
	"Chen, Tim C" <tim.c.chen@...el.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: RE: [PATCH] slub Discard slab page only when node partials > minimum
 setting

On Thu, 8 Sep 2011, Alex,Shi wrote:

> BTW, some testing results for your PCP SLUB:
>
> for hackbench process testing:
> on WSM-EP, inc ~60%, NHM-EP inc ~25%
> on NHM-EX, inc ~200%, core2-EP, inc ~250%.
> on Tigerton-EX, inc 1900%, :)

There is no minus on tigerton. I hope that is not a regression?
>
> for hackbench thread testing:
> on WSM-EP, no clear inc, NHM-EP no clear inc
> on NHM-EX, inc 10%, core2-EP, inc ~20%.
> on Tigertion-EX, inc 100%,

> for  netperf loopback testing, no clear performance change.

Hmmm... The sizes of the per cpu partial objects could be varied a bit to
see if more would make an impact.

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