maemo.org - Talk - View Single Post - Help me find the cause for an extreme battery drainage :)

	efekt	2010-11-21 , 17:29
	Posts: 422 \| Thanked: 320 times \| Joined on Oct 2009 @ Israel	#6

Originally Posted by slender

http://talk.maemo.org/showpost.php?p...0&postcount=55

http://talk.maemo.org/showthread.php?t=59611

.edit
To install powertop IIRC:
-Enable devel repository (normal warnings apply)
- With root:
apt-get update
apt-get install powertop
apt-get clean
- Disable devel repository.
- Run powertop

Thanks slender, but I knew I forgot something - I already tried using powertop and htop, but still could not find the cause for this problem.
Besides, as you can see from the screenshots, the problem is unlikely because of something which uses CPU, as in the screenshot where everything was fine (the first one) you could see a high CPU usage but still with a very low impact on battery drainage (I'd lose around 10% battery each 4 hours), while in the second screenshot you can clearly see that even with a relatively unexisting CPU usage, the battery would drain in a rate of 10%-12% an hour...
Though if you could still figure stuff better than me from the powertop application's output, I would post the results here. Just say the word

Originally Posted by PMaff

Afair violett is CPU.

There seems to be constant CPU usage with peaks around 4:00
and at 6:00.
What does "top" in this case say?

On desktop :
top -b -i > output.file
works but on N900
it only works with
top -b > outputfile
and produces a bit too much output.

I have no idea what it was doing around 4:00 as I was probably asleep

Maybe its spying on me while I'm unaware of that?

Anyways, as I wrote to slender - those CPU 'peaks' (and you're right, the violet is CPU) should still not drain the battery that much...

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Last edited by efekt; 2010-11-21 at 17:34.

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