Questions regarding the firmware are best asked on a list pertaining to the firmware:
http://source.android.com/community/index.html On Tue, Nov 23, 2010 at 6:31 PM, evergreen <[email protected]> wrote: > Hey all, I have some questions about what "Settings -> About Phone -> > Battery Use" tell us and how it is implemented. Most of my questions > have been answered here, > http://android.stackexchange.com/questions/3052/what-does-battery-use-tell-and-how-is-it-implemented. > But I could not find answers of (7), (8), (9) and the difference > between "Android System" and "Android Core Apps"/"Android OS". I'm > wondering if anybody on this mailing list could help me. Thanks in > advance. > > Here are the questions: > > (7) 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? > > (8) 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. > > (9) 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 > -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android App Developer Books: http://commonsware.com/books -- 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
