Getting suspicious counters resets

[Louan-Robert]

Hello, I am using scaphandre in one of my projects, and I am encountering some problems.

When using scaph_socket_energy_microjoules, scaph_domain_energy_microjoules or scaph_host_energy_microjoules metrics, I am observing suspicious counters that reset every 2 hours or, in some cases, after 15 minutes.

Note that when the counters reset, they do not drop to 0.

Here is an example using the scaph_host_energy_microjoules metric.

Is this expected behavior from scaphandre?

Thank you !

[bpetit]

Hi,

This is expected behavior from RAPL counters that are reset periodically. energy_microjoules metrics are counters, they are a no-modification exposition of RAPL metrics you can find either by reading the MSRs or by reading /sys/class/powercap/*/energy_uj files

If you want to graph gauges/stable metrics in grafana/prometheus from those metrics you have to use the rate or irate operators.

If you want to get gauges directly from scaphandre metrics, use scaph_*_power_consumption_microwatts metrics.