Arrow symbol to the left of system health information?

[pygr]

In the banner at the top of the user interface. What does it signify? Sometimes it is present, sometimes not. My first guess is that it appears when the load is increasing. But it also shows up when the load shown has decreased.

Also,what is the little icon (that looks like a symbol for a list) that occasionally shows up to the left of the DB entry?

[pygr]

Apparently, that arrow symbol is a trending_up icon for the load.https://materializecss.com/icons.html