I am running root Android Nougat on a Nexus 6P. My battery is draining in <3hrs. When I run su -c htop it shows system_server is using >400% CPU. I have now factory reset 3 times and each time this behavior surfaces after 1-2 days of normal usage.

system_server seems to be a generic process not tied to any particular app or setting.

What Linux diagnostic commands can I use to systematically trace which apps or settings are related to this issue. I have tried things like wakelock tracking apps with no luck. I have also tried looking at adb logcat but I am not really sure what to look for.

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