linux-kernel - Re: Help Resource Counters Scale better (v4)

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Message-ID: <4A81863A.2050504@redhat.com>
Date:	Tue, 11 Aug 2009 10:54:50 -0400
From:	Prarit Bhargava <prarit@...hat.com>
To:	balbir@...ux.vnet.ibm.com
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	"menage@...gle.com" <menage@...gle.com>, andi.kleen@...el.com,
	Pavel Emelianov <xemul@...nvz.org>,
	"lizf@...fujitsu.com" <lizf@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: Help Resource Counters Scale better (v4)



Balbir Singh wrote:
> Enhancement: Remove the overhead of root based resource counter accounting
>
>
>   

<snip>
> Please test/review.
>
>   
FWIW ...

On a 64p/32G system running 2.6.31-git2-rc5, with RESOURCE_COUNTERS off, 
"time make -j64" results in

real    4m54.972s
user    90m13.456s
sys     50m19.711s

On the same system, running 2.6.31-git2-rc5, with RESOURCE_COUNTERS on,
plus Balbir's "Help Resource Counters Scale Better (v3)" patch, and this 
patch, results in

 real    4m18.607s
user    84m58.943s
sys     50m52.682s

P.
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