First time posting here. I'm trying to monitor my CPU activity with the Intel power-gadget tool, that can be found on Intel's web site.

As the Readme file said, I execute the following lines

./power_gadget -e 1000 -d 10

I obtain the following error :

RAPL not supported, or machine model 406e3 not recognized. Init failed!

Googling my issue didn't bring me any answer. Any clue about the reason of this issue ?

The CPU I am using (Skylake i7-6600U @2.60GHz) should be supported right ?


Yes, your CPU supports the required RAPL features.

The power gadget doesn't support your CPU though: the RAPL initialisation code is table-driven, and it doesn't know about Skylake CPUs (or even Broadwell). It only knows about Sandy Bridge, Ivy Bridge and Haswell (and even then, not all Haswell CPUs)...

  • Thank your for your quick and precise answer. I'll try to use other tools then. – nroux Nov 21 '16 at 15:58

The power gadget hasn't been updated in a while for Linux (current version 2.5, but on OSX and Windows the current version is 3.0.x) - but you can use turbostat --debug to see a lot of the same information, including per-core RAPL measurements, etc. Here's a man page, but the man page on your system is more likely to be up-to-date.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.