Hey all, I have some questions about how "Settings -> About Phone -> Battery Use" works.
(1) It lists energy consumed by individual apps. I'm wondering if those items only include the energy consumed by CPU+RAM+Flash, because the energy used by display, wifi and cell is already listed separately without breakdown to apps. Am I correct? (2) How does Android measure energy used by individual hardware component? For example, to measure energy used by display, does it measure by voltage and current or just measure by the time the display and/or backlight is turned on? If the latter is the case, how does it handle different hardware? (3) How does Android measure energy used by CPU/RAM/Flash of each individual process? I guess for CPU, it may use exampling and find how long each process occupies the CPU, just like many performance profilers do. But for RAM and Flash, it seems to be very expensive to measure it on-line. (4) Is information in "Batter Use" accurate? :-) Thanks! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
