Messages in this thread | | | Date | Mon, 11 Jun 2007 22:33:25 -0400 | From | Jeff Garzik <> | Subject | Re: [patch 0/3] AHCI Link Power Management |
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Tejun Heo wrote: > Kristen Carlson Accardi wrote: >> Hi, >> This series of patches enables Aggressive Link Power Management for AHCI >> devices, as documented in the AHCI spec. On my laptop (a Lenovo X60), this >> saves me a full watt of power. On other systems, reported power savings >> range from .5-1.5 Watts. It has been tested by the kind folks at #powertop >> with similar results. Please give it a try and let me know what you think. > > I'm not sure about this. We need better PM framework to support > powersaving in other controllers and some ahcis don't save much when > only link power management is used, they need to be turned off
A better PM framework would definitely be nice :)
> completely && I don't think scsi sysfs is the right place to export this > interface.
That's about the only place we have right now.
Jeff
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