[ltp] results of test ahci vs piix on t60p

Brad Langhorst linux-thinkpad@linux-thinkpad.org
Mon, 05 Mar 2007 22:12:55 -0500


On Mon, 2007-03-05 at 14:35 -0500, Theodore Tso wrote:
> On Sun, Mar 04, 2007 at 05:06:45PM -0500, Brad Langhorst wrote:
> > I did a few (not very careful) tests to see which was better.
> > 
> > radio off, brightness all the way up, on battery
> > 
> > PIIX, bios compatibility mode
> > ~20W idle ~25W running updatedb
> 
> > AHCI, bios AHCI mode
> > ~17W idle ~24W running updatedb
> > bonnie++
> 
> Interesting.  As I recall the reason that a number of people were
> recommending PIIX was that suspend-to-ram and suspend-to-disk wasn't
> working well with PIIX, where as it worked just fine with AHCI.  Did
> you try out that functionality on both options?

I did not try suspend to disk... but i did try 2 cycles of suspend to
ram which worked with both.

Brad