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

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Message-ID: <1316052031.8425.491.camel@debian>
Date:	Thu, 15 Sep 2011 10:00:31 +0800
From:	"Alex,Shi" <alex.shi@...el.com>
To:	Christoph Lameter <christoph@...eter.com>
Cc:	Christoph Lameter <cl@...ux.com>,
	"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, 2011-09-15 at 09:51 +0800, Christoph Lameter wrote:
> I have not had time to get into this. I was hoping you could come up
> with something. 

Thanks! 
Um, let me have some try.

> 
> On Wed, Sep 14, 2011 at 8:32 PM, Alex,Shi <alex.shi@...el.com> wrote:
>         On Tue, 2011-09-13 at 23:04 +0800, Christoph Lameter wrote:
>         > Sorry to be that late with a response but my email setup is
>         screwed
>         > up.
>         >
>         > I was more thinking about the number of slab pages in the
>         partial
>         > caches rather than the size of the objects itself being an
>         issue. I
>         > believe that was /sys/kernel/slab/*/cpu_partial.
>         >
>         > That setting could be tuned further before merging. An
>         increase there
>         > causes additional memory to be caught in the partial list.
>         But it
>         > reduces the node lock pressure further.
>         >
>         
>         
>         Yeah, I think so. The more cpu partial page, the quicker to
>         getting
>         slabs. Maybe it's better to considerate the system memory size
>         to set
>         them. Do you has some plan or suggestions on tunning?
>         
>         
>         
>         
> 


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