let's measure power efficiency in benchmarks: qmlbench etc.

Linux perf can tell us something:
https://stackoverflow.com/questions/55956287/perf-power-consumption-measure-how-does-it-work

For non-Intel machines (e.g. SBCs) maybe we need another method.

KDE is starting to pay attention to power efficiency: https://eco.kde.org/ It's a topic at Akademy 2023.

They also try to measure total system power consumption various ways.

In the Oslo office we have benchmarking machines running; we could try to do this there and chart the results.