3 ms·
PowerTOP estimates your power consumption, it does not actually measure it. Also, this neglects AC/DC power conversion loss. For a more accurate apples-to-app
by kube-system 3y ago
PowerTOP estimates your power consumption, it does not actually measure it. Also, this neglects AC/DC power conversion loss. For a more accurate apples-to-apples comparison, disconnect the battery and use an actual power meter (e.g. Kill-a-watt) at the AC adapter.
- craftkiller 3y agopowertop is just relaying whatever value my laptop's battery is reporting for current+voltage, read from sysfs[0]. Are you suggesting my laptop's battery is merely estimating current and/or voltage? I don't know much about the hardware in my laptop's battery, and I'm not succeeding in finding information online, but I'm going to need a source to believe that considering how trivial it would be for the battery to report real values for current and voltage. Regardless, your point about AC/DC conversion losses is good considering the article almost certainly was measuring from AC seeing as how it doesn't have a battery. [0] https://github.com/fenrus75/powertop/blob/master/src/measurement/sysfs.cpp https://github.com/fenrus75/powertop/blob/master/src/measure...