Kepler metric readings incorrectly report “source=intel-rapl” on RHEL9/arm64

[jharriga]

What happened?

All Kepler metric readings incorrectly report “source=intel-rapl”

• kepler_node_dram_joules_total{instance="perf-arm-11.perf.eng.bos2.dc.redhat.com",mode="dynamic",package="0",source="intel_rapl"} 0

What did you expect to happen?

source to reflect what mechanism is being used for arm64 systems

Worth noting that 'kepler_node_info' on the same system returns:

• kepler_node_info{components_power_source="ampere-xgene-hwmon",cpu_architecture="unknown",platform_power_source="none",source="os"} 1

How can we reproduce it (as minimally and precisely as possible)?

Download & install rpm
start service
root# systemctl start container-kepler --now
root# curl localhost:8888/metrics | grep 'kepler-metric'

Anything else we need to know?

No response

Kepler image tag

v0.7.9

Kubernetes version

NONE

Cloud provider or bare metal

bare metal

OS version

On Linux:

$ cat /etc/os-release
Red Hat Enterprise Linux 9.3 (Plow)

$ uname -a
Linux perf-arm-11.perf.eng.bos2.dc.redhat.com 5.14.0-362.21.1.el9_3.aarch64 #1 SMP PREEMPT_DYNAMIC Thu Jan 25 08:27:11 EST 2024 aarch64 aarch64 aarch64 GNU/Linux

Install tools

# rpm --version RPM version 4.16.1.3

Kepler deployment config

For standalone:
root# systemctl start container-kepler --now
root# curl localhost:8888/metrics | grep 'kepler-metric'

Container runtime (CRI) and version (if applicable)

Related plugins (CNI, CSI, ...) and versions (if applicable)

[rootfs]

this should be fixed in here and picked up in 0.7.10 release.

[jharriga]

Running v0.7.10 on Ampere server and I still see 'source=intel-rapl'

uname -r

5.14.0-362.21.1.el9_3.aarch64

dnf list installed | grep kepler

container-kepler.noarch 0.7.10-1 @System

curl localhost:8888/metrics | grep kepler_node | wc -l

21

An example record:
kepler_node_core_joules_total{instance="perf-arm-11.perf.eng.bos2.dc.redhat.com",mode="dynamic",package="0",source="intel_rapl"} 97946.062