So i have been using HomeAssistant for a while now, and lately decided to export the data of many of the sensors also to InfluxDB for long term (>2 weeks) storage.
However today when i was doing a query to discover how much power my server uses i discovered something very troubling I cannot explain.
I ran a query to get the ‘mean’ power usage of my server:
Top image = homeassistant statistics,
bottom = influxdb dashboard
As you can see the ‘max’ part of the graph matches almost exactly (except the different smoothing) however the ‘mean’ is a good 10w (on average) off.
I did two more compares with different ranges with the next result:
Both are for the past 3 days & mean per hour, but again, influxDB is a good 10w (±20%!!) off.
I don’t have the same problem with a temperature sensor, which matches almost perfect.
Does anyone know what is causing this huge data discrepancy?
And could it have to do with the high update frequency of the sensor? If thats the case, shouldn’t the data ‘send’ to InfluxDB be averaged over that period?
Edit:
InfluxDB config incase it might be interesting:
influxdb:
api_version: 2
ssl: false
host: <ip>
port: 8086
max_retries: 3
token: !secret influxdb
organization: homeassistant
bucket: homeassistant
default_measurement: units
tags:
source: HA
tags_attributes:
- friendly_name
include:
domains:
- sensor
- binary_sensor
- switch
- automation
- button
- device_tracker
- group
- light
- person
- vacuum
- zone
Sensor:
