linux-kernel - Re: [PATCH 0/2] memcg make use of new percpu implementations

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Message-ID: <20091109070421.GD3042@balbir.in.ibm.com>
Date:	Mon, 9 Nov 2009 12:34:21 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	cl@...ux-foundation.org,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: Re: [PATCH 0/2] memcg make use of new percpu implementations

* KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> [2009-11-06 17:52:42]:

> Hi,
> 
> Recent updates on dynamic percpu allocation looks good and I tries to rewrite
> memcg's poor implementation of percpu status counter.
> (It's not NUMA-aware ...)
> Thanks for great works.
> 
> For this time. I added Christoph to CC because I'm not fully sure my usage of
> __this_cpu_xxx is correct...I'm glad if you check the usage when you have time.
> 
> 
> Patch 1/2 is just clean up (prepare for patch 2/2)
> Patch 2/2 is for percpu.
> 
> Tested on my 8cpu box and works well.
> Pathcesa are against the latest mmotm.

How do the test results look? DO you see a significant boost? BTW,
I've been experimenting a bit with the earlier percpu counter patches,
I might post an iteration once I have some good results.

-- 
	Balbir
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