I have Glances monitoring my RaspberryPi where HomeAssistant runs. I was alarmed to see something was using all my free RAM. (It was Flask). After doing some reading, I came upon this awesome and clear explanation of the difference between available ram and free ram. (tldr: Flask was using RAM in the buffer but that RAM is still available to other applications, even if it isn’t “free” by linux’s definition). The Glances integration only provides free RAM as a sensor.
So the feature request is to expose available RAM and available RAM / total RAM as sensors.