linux-kernel - Re: [RFC][PATCH 0/5] memcg: reduce lock conetion

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Message-Id: <20090828133355.6b935757.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Fri, 28 Aug 2009 13:33:55 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	balbir@...ux.vnet.ibm.com
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>
Subject: Re: [RFC][PATCH 0/5] memcg: reduce lock conetion

On Fri, 28 Aug 2009 09:58:36 +0530
Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:

> * KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> [2009-08-28 13:20:15]:
> 
> > Hi,
> > 
> > Recently, memcg's res_counter->lock contention on big server is reported and
> > Balbir wrote a workaround for root memcg.
> > It's good but we need some fix for children, too.
> > 
> > This set is for reducing lock conetion of memcg's children cgroup based on mmotm-Aug27.
> > 
> > I'm sorry I have only 8cpu machine and can't reproduce very troublesome lock conention.
> > Here is lock_stat of make -j 12 on my 8cpu box, befre-after this patch series.
> >
> 
> Kamezawa-San,
> 
> I've been unable to get mmotm to boot (24th August, I'll try the 27th
> Aug and debug). Once that is done, I'll test on a large machine.
>  
yep, take it easy. I'm now very active in this weekend, anyway.

BTW, have you tried this ?

http://marc.info/?l=linux-kernel&m=125136796932491&w=2

Thanks,
-Kame

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