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I love the new energy tab in OSX 10.9 mostly because I love data about my machine. I'm curious how the energy impact is calculated, and what the number represents.
It seems clear from using the OS for a week that apps that are running more CUP/memory intense processes (for me: Mathematica and MATLAB) use more energy, or apps that can't take a nap (like listening to pandora in google chrome).
What isn't displayed are some of the bigger energy hogs on a portable: Display settings, WiFi, Bluetooth. I'm wondering if some of this is wrapped into current apps (i.e., if i'm using safari or chrome full screen, will the display power be lumped into this app?) Do display preferences for the app change the energy being used (i.e., working in a text editor with a white-on black scheme instead of black-on white would theoretically use less energy to display).
If these are percents, they do not sum to 100, which is a little annoying.