lkml.org 
[lkml]   [2007]   [Jun]   [13]   [last100]   RSS Feed
Views: [more markup]   [less markup]   [headers]   [forward]  
 
 
Messages in this thread
/
DateWed, 13 Jun 2007 09:26:07 -0700
FromKristen Carlson Accardi <>
SubjectRe: [patch 0/3] AHCI Link Power Management
On Wed, 13 Jun 2007 11:04:30 +0200
Pavel Machek <pavel@ucw.cz> wrote:

> Hi!
> 
> > >> 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,
> > > 
> > > do you have data to support this?
> > 
> > Yeah, it was some Lenovo notebook.  Pavel is more familiar with the
> > hardware.  Pavel, what was the notebook which didn't save much power
> > with standard SATA power save but needed port to be completely turned off?
> 
> Thinkpad x60. Some one Kristen probably used while developing the
> patch :-).

Yes - that confirms my conclusion that the first patch just wasn't
done correctly - cause when I measure the power savings with a power
meter on the X60 with my patches I see ~ 1W.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-06-13 18:33    [from the cache]
©2003-2008