linux-kernel - RE: high power consumption in recent kernels

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Message-ID: <EA929A9653AAE14F841771FB1DE5A136602222979F@rrsmsx501.amr.corp.intel.com>
Date:	Wed, 29 Sep 2010 09:48:54 -0600
From:	"Chen, Tim C" <tim.c.chen@...el.com>
To:	Norbert Preining <preining@...ic.at>,
	"Shi, Alex" <alex.shi@...el.com>
CC:	Peter Zijlstra <peterz@...radead.org>,
	"arjan@...radead.org" <arjan@...radead.org>,
	"efault@....de" <efault@....de>,
	"Li, Shaohua" <shaohua.li@...el.com>, tglx <tglx@...utronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Zhao, Yakui" <yakui.zhao@...el.com>
Subject: RE: high power consumption in recent kernels

Norbert,

Can you try with the no-hz ratelimit now code REMOVED, and see if 
that will reduce your system power and cpu wakeups further.
Your last testing has the no-hz ratelimit code and we will like
to compare the effect with and without the code.

Sorry for the confusion.

Tim

>-----Original Message-----
>From: Norbert Preining [mailto:preining@...ic.at] 
>Sent: Wednesday, September 29, 2010 7:39 AM
>To: Shi, Alex
>Cc: Peter Zijlstra; Chen, Tim C; arjan@...radead.org; 
>efault@....de; Li, Shaohua; tglx; 
>linux-kernel@...r.kernel.org; Zhao, Yakui
>Subject: Re: high power consumption in recent kernels
>
>Hi Alex,
>
>> Could you like to try the following patch on your system and see how
>> many power it consumption now?
>
>But this patch is excately what you send me already and what I tried
>and I answered in the last email?
>
>Do I miss something here?
>
>All the best
>
>Norbert
>--
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