Kepler - iperf3 - Wireguard kubernetes wrong energy metering

[tz1tz1s]

Hello everyone, when I measure power consumption of wireguard while I use iperf to create artificial traffic I get wrong power consumption metrics. The power consumption when I use wireguard to encrypt traffic is less that the power consumption when I don't use it. In contrast, the CPU consumption is higher when I use wireguard (that's normal). What is going on?