linux-kernel - Re: [patch 3/3] Enable Aggressive Link Power management for AHCI controllers.

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Message-ID: <466DF3E9.30303@linux.intel.com>
Date:	Mon, 11 Jun 2007 18:16:25 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
CC:	Kristen Carlson Accardi <kristen.c.accardi@...el.com>,
	jeff@...zik.org, james.bottomley@...eleye.com,
	linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, htejun@...il.com
Subject: Re: [patch 3/3] Enable Aggressive Link Power management for AHCI
 controllers.

Henrique de Moraes Holschuh wrote:
> On Mon, 11 Jun 2007, Kristen Carlson Accardi wrote:
>> Setting		Effect
>> ----------------------------------------------------------
>> min_power	ALPM is enabled, and link set to enter 
>> 		lowest power state (SLUMBER) when idle
>> 		Hot plug not allowed.
>>
>> max_performance	ALPM is disabled, Hot Plug is allowed
>>
>> medium_power	ALPM is enabled, and link set to enter
>> 		second lowest power state (PARTIAL) when
>> 		idle.  Hot plug not allowed.
> 
> Just some food for thought:
> 
> If you split it into a enable/disable (0/1) attribute, and a level attribute

on/off doesn't really make sense if the question is "do you favor 
power or do you favor performance".......
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