how does it work? about green-metrics-tool

[ArneTR]

The tool in its current form on Github does orchestrate the software in Docker containers and pulls their metrics via a stream from docker stats.

This approach is just chosen for the prototype. As you pointed out correctly it does not measure energy directly and a problem with this approach is:

• The resolution of 1s is pretty low
• Docker stats gives sometime out different value than top / /proc/stat depending on your OS configuration
• It does not directly translate into energy without an appropriate transfer model.

Scaphandre I know, but since it uses RAPL it has problems of its own like the limitation to Intel CPUs and also a known strong bias and very off dynamic to the real input
power signal (https://www.mdpi.com/1996-1073/12/11/2204)

So at the moment this is just our outward facing prototype and we are currently in the process of doing the needed research on our Test-Systems where we setup an electrical
measurement directly on the ATX rails of a Blauer Engel for Software compatible machine to create a software transfer model that can
either directly translate from sensors / performance metrics to energy values or allow other folks to measure on our system directly (Similar to the Marcher System from Greensoft, only with a docker setup instead of a function base approach (https://greensoft.cs.txstate.edu/index.php/category/documentation/marcher/))

I updated the readme to make the docker step and the current problems more obivious. Thanks for taking the time to have a look at the tool.

I also wrote you an email with some further questions.

[ArneTR]

Hey Chris,

Update: We are not using docker-stats anymore, but now have separate reporters that live in https://github.com/green-coding-berlin/green-metrics-tool/tree/integration-tests-initial-pipeline-testing/tools/metric_providers

Their resolution is up to 1 ms, which should suffice for at least all projects I know of :)

In regards to energy measurement: Our energy reporters use Intel RAPL now.

Internally we also have DC measurements using a Pico HRDL ADC-24 (https://www.picotech.com/data-logger/adc-20-adc-24/precision-data-acquisition)

We do have measurements with the data from it online:

• Example #1: https://metrics.green-coding.org/stats.html?id=ad9becb9-2a32-4247-b5e8-60e0264442aa
• Example #2: https://metrics.green-coding.org/stats.html?id=782621c8-96cb-46b1-b91f-adfb6120728d

However, since it runs on a separate machine for now we have no possibilty to make it available through our Measuring Service on https://metrics.green-coding.org/request.html

But we are working on it ... :)

Our new documentation is also only at https://docs.green-coding.org/ which will hopefully clear up more questions.

I am closing the comment and hope everything was answered. If not please feel free to open a new issue.