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List:       enlightenment-users
Subject:    Re: [e-users] Lowering E17 battery use?
From:       Marc MERLIN <marc_e17 () merlins ! org>
Date:       2012-04-08 3:03:13
Message-ID: 20120408030313.GJ32290 () merlins ! org
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On Sun, Apr 08, 2012 at 12:00:57PM +0900, Carsten Haitzler wrote:
> On Sat, 7 Apr 2012 12:02:18 -0700 Marc MERLIN <marc_e17@merlins.org> said:
> 
> that setup just changed framerate and wallpaper really. if e is idle - ie you
> aren't moving windows around, resizing things, it isn't animating stuff (bouncy
> icons or what not) it should be pretty close to dead idle. eg:
> 
> Top causes for wakeups:
>   39.2% ( 70.5)   [ehci_hcd:usb1, ehci_hcd:usb2] <interrupt>
>   30.5% ( 55.0)   USB device 2-1.4.1.1 : Flash Card Reader (Generic)
>   11.6% ( 20.9)   USB device 2-1.4.1.3 : SHW-M110S (Samsung Electronics)
>    4.2% (  7.5)   kworker/0:0
>    3.5% (  6.3)   [kernel scheduler] Load balancing tick
>    3.0% (  5.5)   kworker/0:1
>    1.2% (  2.2)   mysqld
>    1.1% (  2.0)   enlightenment
>    1.1% (  1.9)   [nvidia] <interrupt>
> 
> so enlightenment is pretty much not a worry. this is with compositing and
> everything. not a laptop, so no battery module loaded here. it's using 0% cpu.
> you'll have to figure it out there, but all i can say is that e wakes up when
> it is asked to by some bit of code (timer, animation, polling) or by an
> external factor (input events). you may find out more by stracing, or by sheer
> elimination (kill apps, unload modules, disable/remove things until usage goes
> down).

Thanks both for the tips. Now that I know I'm shooting for just a few
wakeups per second at most, it definitely helps.

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/  

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