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In Linux, is it possible to know which processes consume most battery energy at the moment?

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    Processes don't directly consume battery energy. They do by wasting CPU time, mostly. Take a look at top.
    – slhck
    Aug 21, 2011 at 14:22

1 Answer 1

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Yes, powertop. Look at the screenshot:

powertop

But powertop hasn't 100% precision, CPU isn't the only battery consumer. Use also iotop for the disk activity.

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  • thanks, wakeups-from-idle per second should be a small number - 17.4 on the picture, in my case it's 800-900. most wakeups are caused from network card(which is needed) and SingalSender - which should come from Chromium, but I don't have Chromium. what should I reduce the number of wakeups?
    – Sergey
    Aug 21, 2011 at 16:57
  • Try with ethernet and wifi disconnected. Close all software. Look at powertop again. If the problem persist may be a bug in the kernel. Aug 21, 2011 at 20:16

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