Compare with alternatives

[PhilippWendler]

Since CPU Enery Meter was developed, using the energy measurements from CPUs has become more common. It might be that there are now easy-to-use alternatives. We should investigate what other solutions exist and whether they can make CPU Energy Meter simpler or even replace it.

Current ideas from the recent Hacker News discussion about CPU Energy Meter:

• /sys/devices/virtual/powercap/intel-rapl/ (also on AMD, by default only accessible to root)
• Intel Performance Counter Monitor (PCM)
• perf stat -e 'power/energy-pkg/' -I 1000 --interval-count 3
  (seems to require sysctl -w kernel.perf_event_paranoid=3, documentation)
• turbostat
• Astron Power Measurement Toolkit (PMT) (paper)
• Variorum
• LIKWID Performance Tools
• Intel Platform Monitoring Technology Telemetry (PMT)