Re: [Powertop] How to decrease PS/2 Touchpad / Mouse wakeups?

Re: [Powertop] How to decrease PS/2 Touchpad / Mouse wakeups?

[Marc MERLIN]

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On Sat, Jul 19, 2014 at 09:51:28AM -0700, Marc MERLIN wrote:
> On a thinkpad T540p, I see:
>   4.10 W      6.6 ms/s     196.3        Interrupt      PS/2 Touchpad / Keyboard / Mouse
> 
> Even if the 4W figure is wrong, 200 wakeups for a touchpad and keyboard
> seems totally ridiculous.
> 
> What can be done to decrease those?

I did more tests, if I do not touch my trackpoint and touchpad, this
doesn't register in powertop, as in I get no interrupts.
I can actually use the keyboard all day long, and that's fine.

The moment I touch the trackpoint, I get:
  3.83 W      6.5 ms/s     169.9        Interrupt      PS/2 Touchpad / Keyboard / Mouse

If I use the touchpad, I get:
  4.46 W      7.2 ms/s     199.8        Interrupt      PS/2 Touchpad / Keyboard / Mouse

Are the drivers really that bad?

Is there any way around this?

Thanks,
Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901

Re: [Powertop] How to decrease PS/2 Touchpad / Mouse wakeups?

[Marc MERLIN]

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Bueller?

On Sun, Jul 20, 2014 at 06:53:24PM -0700, Marc MERLIN wrote:
> On Sat, Jul 19, 2014 at 09:51:28AM -0700, Marc MERLIN wrote:
> > On a thinkpad T540p, I see:
> >   4.10 W      6.6 ms/s     196.3        Interrupt      PS/2 Touchpad / Keyboard / Mouse
> > 
> > Even if the 4W figure is wrong, 200 wakeups for a touchpad and keyboard
> > seems totally ridiculous.
> > 
> > What can be done to decrease those?
> 
> I did more tests, if I do not touch my trackpoint and touchpad, this
> doesn't register in powertop, as in I get no interrupts.
> I can actually use the keyboard all day long, and that's fine.
> 
> The moment I touch the trackpoint, I get:
>   3.83 W      6.5 ms/s     169.9        Interrupt      PS/2 Touchpad / Keyboard / Mouse
> 
> If I use the touchpad, I get:
>   4.46 W      7.2 ms/s     199.8        Interrupt      PS/2 Touchpad / Keyboard / Mouse
> 
> Are the drivers really that bad?
> 
> Is there any way around this?
> 
> Thanks,
> Marc

-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/