Re: [patch 3/3] Enable Aggressive Link Power management for AHCIcontrollers.

From: Jeff Garzik
Date: Mon Jun 11 2007 - 21:59:58 EST

Dagfinn Ilmari Mannsåker wrote:
Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> writes:

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

How about just making it a numeric scale with 0 meaning no power saving
and then some fixed number of levels (e.g 0-9)?

The original proposal seems far more intuitive than these alternatives.


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